For sale is a Phasemation PP500 MC cartridge with less than 20 hours of run time and in as new boxed condition.
This little known Japanese company has a range of cartridges which surpasses anything I have ever heard at their price point.
For sale is the amazing Bricasti M5 Streamer used as a very high end streaming device or Roon endpoint. Comes with a bespoke Panzerholtz platform.
In excellent to as new condition.
This device connects to the ethernet and then to a DAC for streaming Tidal or Qobuz plus other streaming services and connections. Please see the manufacturers website for full specs and details.
Argenti Ref loudspeaker cable as used with Mono block amplifiers and longer interconnect cables.
As new condition and constructed with solid silver foil over a silk and oil dielectric with gold plated pole connectors.
For sale is a MC1 Phonostage pre-amplifier in as new condition having little demonstration time.
This is a SE spec MC1 with upgraded signal path components and internal wiring.
Please see the full product page for further details.
For sale are these exquisite loudspeakers in as new condition in distressed leather and spalted copper beech.
All specifications are in the product specification section.
Opulus in as new condition in parchment hide and copper beech hardwood.
Full spec components, internal wiring and Mundorf Angel hair dampening. Please see the product page for the full details.
A bespoke one off design in 60mm solid oak and copper beech sides designed around the amazing Purify Audio 5.25" transducer and a single 6.5" side passive radiator and the same exotic ribbon tweeter from our Voltaire Ref 1 loudspeaker.
Incorporating a full compliment of exotic cross-over components, internal wiring and Mundorf Angel hair dampening.
For further details, please inquire or ring.
The record weight is another one of those Hifi products we wonder if they make a difference or improvement.
After many months of testing and research, I can categorically say they do!
The solid tone wood Puk's such as African Blackwood, Lignum Vitae and various Burr woods are chosen for their natural ability to dampen micro vibrations inherent within a turntable and the record surface.
Subtle but noticeable differences can be heard in a clearer resolution and reduced background noise. Piano notes become cleaner and more distinct with additional air around vocals and instruments.
The latest generation of record weights now include a combination of African Blackwood and Panzerholtz with high grade Chromium ball bearings to give additional improvements over the standard hardwood Puk's.
Every record weight is hand made and polished with hard wax.
Shakti On-Lines use a specially engineered circuit adapted from the larger Shakti Stabilizer and provide efficient EMI reduction in situations where limited space is a consideration. Placed on all system cables (interconnects, speaker wire, power cables and video cables), they can have a significant improvement on sound quality.
Placement is optimal near the center and/or close to connection points. In addition many users who build or modify their own equipment are placing On-Lines on or near critical internal circuit parts such as DAC chips, capacitors and internal wiring. Placement in all situations is facilitated by self-adhering Velcro circles that are placed on the cable or component to be treated. The On-Lines have matching Velcro on them that allows easy attachment or removal.
Dimensions (inches): 3 L x 5/8 W x 3/8 H.
Shakti Electromagnetic Stabiliser stone uses proprietary noise reduction circuitry to absorb and dissipate electromagnetic interference (EMI) and radio frequency interference (RFI). Both EMI and RFI degrade signal transfer and sound quality.
The word Shakti means energy. Through an energy conversion, inductive coupling process, the antenna-like circuits within Shakti attract and then resistively convert EMI to non-interfering heat. This increases horsepower and speeds up 0 to 60 times in automotive engines and improves resolution in high definition audio/video systems. No electrical connection is required because all interactions take place through radiated field mutual coupling.
Simply place Shakti units in near proximity to your audio component to obtain performance improvements and prepare to be amazed.
This may be our standard interconnect cable how-ever this is certainly not a cable to be compared with other similarly priced products on the market.
This will easily compete with other brands at many hundreds of pounds and often more.
Highly detailed with precise imaging and soundstage.
A screened balanced cable of high purity silver plated copper terminated with either unbalanced RCA, or fully balanced XLR sockets sourced to meet our exacting standards where even the outer screen is made from high purity silver plated copper.
Hand made in the UK using Neutrik connectors and silver solder and conditioned using our in house Audiodharma cable cooker to save the normal 200 hours of running in silver related cables.
As with all our cables we offer a no quibble money back guarentee if for any reason you are not happy with this product.
| Construction | Silver plated copper. Fully balanced silver plated outer shield |
| Capacitance | 120pF - 1m |
| DCR - Ohms | 0.019 Ohms - 1m |
| Inductance | 1.1uH - 1m |
| Outer braid | None |
In the quest to find a cable capable of unravelling the complexities of digital music and both analogue in character and very detailed and holographic, we believe we have developed a remarkable interconnect cable perfect for digital sources and also analogue vinyl replay.
The construction of this interconnect cable is similar to our Reference range of cables where a multistrand copper conductor is used instead of silver, along side a Physics foam and FEP dielectric housed in braiding and additional cotton for maximum air gap around the conductors.
Extremely low capacitance and Inductance.
Locking gold plated WBT RCA connectors or Neutrik XLR's are used and then cable conditioned using our in house Audiodharma cable cooker for a true "run in" and directional cable.
As with all our cables, we offer a no quibble money back guarentee if not satisfied.
| Construction | 68 Individual Litz copper with Physics foam and FEP dielectric |
| Capacitance | 45pF @ 1m |
| DCR - Ohms | 0.055 Ohms |
| Inductance | 1.5uH |
| Outer braid | Cotton |
To compliment our Reference loudspeaker cable Robson Acoustics have designed an Interconnect cable using a smaller form of ultra high purity silver ribbon conductor with silk and oil dielectric structure. The same additional cotton covering and rubber tubing for damping and vibration control is also used.
The very best Viborg Rhodium plated or Tellurium copper RCA plugs are used in the unbalance version and Rhodium plated XLR connectors for the balanced cables.
After many hours of construction the whole cable is sent off for deep cryogenic treatment followed by cable conditioning on our in house Audiodharma cable cooker. The cable still requires a minimum run in period to settle into any given system and is now directional.
For our own demonstration suites and systems, this cable has replaced a well known brand costing nearly £4000 with added holographic presentation and dimensionality.
| Construction | Ultra pure Silver foil with silk and oil dielectric and cotton and PVC outer braid. Rhodium plated RCA and XLR connectors |
| Capacitance | 77pF - 1m |
| DCR - Ohms | 0.008 Ohms - 1m |
| Inductance | 0.5uH - 1m |
| Outer braid | Cotton and PVC |
Based around our very well reviewed Ultra Loudspeaker cable and using the same high purity silver plated copper conductors and thick rubber dielectric to offer exceptional value for money and performance.
As with our standard interconnect cables, this is capable of very high performance and the cable we use as standard for the internal wiring for many of our loudspeakers to continue and perfectly match the signal flow from amplifier to drive units and cross-over so often overlooked in even high end loudspeakers.
Standard loudspeaker cable features :
A very smooth and "dark" loudspeaker cable offering a truly analogue charactor but with all the necessary detail and incredible imaging and soundstage.
Cable conditioned using our in house Audiodharma cable cooker for 4 days prior to shipping.
| Construction | Silver plated copper |
| Capacitance | 180pF |
| DCR - Ohms | 0.045 |
| Inductance | 12uH |
| Outer braid | Cotton and PVC |
Robson Acoustics have been listening and appraising loudspeaker cable for many years now for both the internal wiring of speakers to dedicated loudspeaker cables in order for our range of speakers to sound at their optimum. We often sell cable which is identical to the internal wiring of our speakers to perfectly match the signal path where often in floor standing speakers the length of cable within the cabinet can be as long as a set of external cables. For this reason alone our dedication to finding the best cable is of the utmost importance and why Argenti was developed to provide a balance between our new Reference speaker cable and our standard speaker cable.
Argenti speaker cable is made from directional silver plated copper of very high purity, which has the ability to reduce the “grain” in vocals and higher frequencies, tighten bass and give a “blacker” background to the music. Engineered to exacting standards, deep cryogenically treated and conditioned using our in house cable cooker which eliminates the dreaded long burn in process associated with cables having silver content.
Exceptional in terms of incredible micro dynamic resolution, soundstage and to impart as little distortion as possible. This is a very smooth sounding cable with no loss of detail.
Many speaker cables sound harsh by comparison which is often the distortion most cables exhibit.
| Construction | Silver plated copper - 4 wire weave geometry |
| Capacitance | 130pF - 2m pair |
| DCR - Ohms | 0.023 Ohms |
| Inductance | 8uH |
| Outer braid | Cotton |
After many years of searching for the ultimate ultra high purity silver core and then covering this in a silk and oil dielectric, we have finally come up with a true reference loudspeaker cable capable of competing with cables over £10,000.
Constructed using multiple 99.999 5N pure silver ribbon cables with a silk and oil covering and using additional cotton sleeving in a complex air and cotton secondary dielectric, finally housed in rubber tubing to eliminate vibration and offer damping control over the entire length.
The whole cable including banana plugs are then sent off for cryogenic treatment followed by a 4 day cable conditioning on our in house Audiodharma cable cooker.
This cable exhibits a truly magical analogue character with incredible bass precision and a huge soundstage.
Listening is believing!
| Construction | Ultra pure silver foil with silk and oil dielectric and cotton and PVC outer braid |
| Capacitance | 30pF twisted pair @ 1m, 130pF over 2m |
| DCR - Ohms | 0.011 Ohms for a 1m pair, 0.022 Ohms for a 2m pair |
| Inductance | 4.9uH for a 1m pair, 8.3uH over a 2m pair |
| Outer braid | Cotton and PVC |
Following the requests of many customers to produce a power cable of very high quality, we have come up with a design worthy of the Robson name and equal to some of the very best mains cables in the market today.
Using the latest technology UP-OCC individual pure copper multi strand cable for high current use and improved dynamic performance. Deep Cryogenic treatment of all conductors and the latest low dielectric constant FEP insulation. The screening is catered for by an OFC copper braid and additional PVC covering with a top layer of PVC and cotton sleeving.
| Construction | Twin 12 AWG deep cryogenic treatment copper cable with FEP dielectric, Viborg silver power plugs |
| Capacitance | Live - Neutral - 175pF Live to Earth - 316pF @ 1m cable |
| DCR - Ohms | Live - 0.019 Neutral - 0.008 Earth and screen - 0.012 @ 1m cable |
| Inductance | Live and Neutral - 1.2uH Earth - 316uH |
| Outer Braid | PVC and cotton |
details to follow...
| Construction | Twin 12 AWG deep cryogenic treatment copper cable with FEP dielectric, Viborg power plugs |
| Capacitance | 54pF Neutral to Live 38pF Earth to Live |
| DCR - Ohms | Earth - 0.006 Ohms Live - 0.012 Ohms Neutral - 0.008 Ohms |
| Inductance | Live - 0.6uH Neutral - 0.6uH Earth - 1.5uH |
| Outer Braid | PVC and cotton |
Class A amplifiers have always had the reputation of warmth and a great soundstage and although class D amplifiers have made a great way forward in recent years, is there still room for this old design of amplification in the modern world?
Excessive heat, high power consumption, very low damping factor and low power output. All these aspects and small amounts of hum does not bring confidence to the discerning audiophile how-ever as always, it is in the listening where this approach to amplification brings a certain joy and pure audio realism that answers the question earlier.
My own reference system now has this amplifier along with the latest MV2 tube pre-amplifier and in terms of preference the Class D N-core 1200 mono block amplifiers which are incredibly good, now comes third behind this stereo power amplifier and the 300B tube integrated amplifier.
The reasons are many but primarilly it is about that elusive holographic presentation, a lack of edge to vocals and instruments such as piano and pure realism to live recordings which gives an accurate sense of space and depth to a recording.
Digital recordings have a more organic and analogue feel and vinyl takes on an even more beautiful and beguiling nature making you want to explore your vinyl collection yet again and buy new records.
As with all the masterpiece editions, this model is hand crafted using exotic materials and components. Bolivian Rosewood, copper panels and silver wiring are standard.
This stereo amplifier will soon be complimented with a matching tube pre-amplifier. Watch this space.
To discuss this product please give me a ring.
| Output power |
20W x 2 RMS into 8 ohms |
| Damping factor | <16 |
| Minimum load | 4 ohms |
| Frequency response and Distortion | 10Hz to 30kHz @ 0.19% @ 1Khz 1 W 0.2% @ full power |
| Signal to noise ratio | 91dB |
| Output impedance | 0.36 Ohms @ 1Khz 500mV input |
| Construction | Copper top plate and solid Bolivian Rosewood case |
| Input sensitivity | 1.63V RMS |
| Inputs | 2 x RCA inputs |
| Power consumption | 150W |
| Input voltage | 240V/50Hz |
| Output connectors | Silver plated binding posts |
| Input connectors | Un-Balanced RCA |
| Input impedance | 24Kohms |
| Size | 430W x 370D x 140H (mm) |
| Weight | 14Kg |
For many years now I have wanted to see how good the 300B tube amplifier design actually is and to see how far this design can be pushed to extract every last drop of it's acclaimed holographic presentation and musicality.
The Masterpiece edition 300B integrated amplifier has more than exceeded my expectations in terms of sheer enjoyment from music, especially live recordings where it exhibits a beautifully "real" sound where musicians and instruments are visible in time and space as a truly cohesive field.
At only 7W output, it is a little low for many low sensitivity loudspeakers and care here is needed to match this amplifier with anything below 90dB how-ever I have also been surprised at how well this amplifier copes with large loudspeakers such as the Voltaire lll which as it happens has very tube friendly impedance characteristics and easily driven by this amplifier and at high volumes which I generally like to listen to. Also of note is it's ability to deliver a very precise and extended bass rendition without the often terrible bass control of other tube amplifiers. High frequencies shimmer and vocals are simply exquisite with imaging of pin point accuracy and definition.
Having a very high input impedance negates the need of a separate pre-amplifier and the first pre-buffer stage is taken care of by a matched pair of Psvane 6SN7 vacuum tubes. Having tested many 300B tubes I still prefer the Golden Lion version and although the differences are quite small, I have decided the masterpiece edition needed to sound as good as possible.
Output transformers are another very long and difficult subject and after long discussions with NP Acoustics from Vietnam who are passionate about their transformer product, I am now using them exclusively for both power output transformers and also pre-amplifier transformers and will soon be making a reference pre-amplifier to add to the masterpiece collection. These beautifully made transformers sound amazing and a step up from many other brands that get great reviews.
Internal wiring is again from Duelund Audio both with solid silver foil on outputs and signal cable. This is a design that loves silver especially the very high grade and pure silver!
Encased in a solid burr Elm and a 3mm brass cabinet including dampened standoff material and transformer dampening to ensure the whole structure is virtually free of extraneous vibrations and external spurious emissions. This amplifier is very quiet and has an inky black background during playback.
Having spent the last few years developing headphone amplifiers based around the HiFiMan Susvara Ref headphones, it soon became apparent that this design is also an incredibly good match with high end headphones and using a switched attenuator can also partner with high sensitivity headphones. This is now my reference headphone amplifier and can also be built purly for this purpose for the discerning audiophile headphone fan.
Please contact me to discuss this product
| Output power |
7W x 2 RMS 4 ohms Tap 7W x 2 RMS 8 ohms Tap |
| Tube compliment | Pavane 6SN7 and Golden Lion 300B output tubes
Rectifier Svetlana Winged C - 5U4G |
| Minimum load | 4 ohms |
| Frequency response and Distortion | 10Hz to 30kHz @ 0.015% @ 1Khz 1 W 0.2% @ full power |
| Signal to noise ratio | 85dB |
| Output Transformers | NP Acoustics Amorphous core |
| Construction | Brass plate and solid burr Elm case |
| Input sensitivity | 3V RMS |
| Inputs | 2 x RCA inputs |
| Power consumption | 350W |
| Input voltage | 240V/50Hz |
| Output connectors | Rhodium plated binding posts |
| Input connectors | Un-Balanced RCA |
| Input impedance | 47Kohms |
| Size | 400W x 430D x 290H (mm) |
| Weight | 30Kg |
Another exciting project and product development is based around the well known Swiss made Lenco turntable which fundamentally is constructed extremely well with a precision motor and structure that lends itself to be upgraded and modified to create an incredibly good turntable.
The initial phase involves a complete strip down of every component with certain key parts replaced or modified. The main chassis is resprayed and lacquered before re-assembly and lubricated for longevity and noise reduction. Because the central spindle and platter are already of a very high standard and tolerance, these are polished and retained. The main bearing is either replaced with an upgraded bearing or modified with a new ruby ball bearing and thrust plate. The main motor is stripped down and inspected for wear or noise, re-assembled and lubricated. I have yet to find a motor which has failed these tests or brought back to a new standard.
The high mass plinth is a based around the natural qualities of certain hardwoods and their abilities to exhibit very high levels of resonance and damping control as well as high density and other acoustic characteristics.. This model is made from solid sections of Bubinga hardwood which is incredibly heavy and dense, perfect for reducing micro vibrations within the motor and main turntable structure. This combined with Tungsten carbide ball bearings on Panzerholz dampening feet ensure the combined structure of the turntable is virtually free from extraneous effects and vibrations.
A choice of tonearm boards made from either the same hardwood or Panzerholtz is available with additional dampening and specifically chosen for their acoustic characteristics and density.
Days of sanding and preparation are done prior to a high gloss lacquer finish with further wet sanding, buffing and final polishing before final assembly and soak testing.
A choice of tonearm is also available and from SME, Ikea and Reed along with a select number of cartridges. Please get in touch to discuss this product.
The Masterpiece Edition MC step-up transformer was designed to be used with the best MM Phono stages.
Having spent many years appraising and researching different transformers it is clear the quality of the transformer, the type of core and the overall housing plays a very big part in it's overall sound. The use of ultra pure silver wire for internal connections and the choice of RCA socket all plays a part in the overall standard the Masterpiece collection is renowned for.
Hand crafted using tone woods and optimum shielding with additional Mu-metal housing and using the theory of constrained layer damping with-in the hardwood case to minimise micro and macro vibrations.
Amorphous core windings and the use of high purity silver or copper wire to give incredible detail and resolution.
Available in various gains dependant on cartridge output levels and relative to the standard 47Kohm input impedance of most MM Phonostages. All 3 gain options are also available in standard high purity copper or silver wire.
As with all our designs we talk at length with our clients to discuss various options and suitability of their vinyl replay system to ensure a perfect integration between the SUT and phono stage.
| Technology | High turns ratio amorphous cobalt core with Cardas high purity copper or silver wire |
| Description | Moving coil MC input transformer |
| Gain | 16dB or 26dB |
| Frequency Response | 10Hz to 100KHz |
| Impedance - secondary | Static resistance of secondary - 105 ohms |
| Impedance - Primary | Static resistance of primary - 0.8 ohms |
| Max level @ 20Khz | +20dBu |
| Inductance @ secondary | 80H<< |
| Dimensions | Height - 10cm Width - 10cm Depth - 20cm |
| Net Weight | 4Kg |
| Finishes | Various exotic tone woods |
After many years of building the hugely popular and successful Regis Mk1 and knowing that due to the discontinued bass/mid driver, I would have to design a new model and try and succeed in raising the bar in terms of overall sonic qualities. No mean feat because the Mk1 is truly a reference loudspeaker in many ways.
The Regis Masterpiece was born from the desire to build a cost no object reference stand mount loudspeaker and choosing 2 very high end drive units from well respected manufacturers, namely Morel and Raal. The top of the range Morel copper sleeve bass/mid driver is exceptional in every way and the Raal ribbon tweeter is possibly the best tweeter in existence and also used in the Voltaire lll and new Opus One.
Internal wiring, cross-over components and Rhodium plated pole connectors are chosen specifically to match these particular drive units and honed to match this design perfectly. Complimented with Mundorf's "Angel hair" internal wadding for damping properties which significantly increase the auditory spaciousness of music reproduction.
These loudspeakers are capable of the most incredible holographic presentation, high resolution detail and bass depth defying their size.
These reference monitors will continue to extract more resolution and quality no matter how good the ancillary equipment is in terms of cost or quality.
| Technology | Finnish Birch Ply and MDF matrix construction |
| Description | 2 way, linear phase, free ported enclosure |
| Drive Units | 1 x 152 mm mineral filled Polypropylene cone bass/mid range unit 1 x Low mass high precision Ribbon Tweeter |
| Frequency Response | 40Hz to 40KHz +/- 2dB on axis |
| Impedance | 8 Ohms nominal, 5 Ohms minimum |
| Sensitivity | 85dB spl at 1 metre on axis. 2.83V input |
| Crossover | 2nd order bass roll-off 2nd order tweeter |
| Power Handling | 150W peak un-clipped programme |
| Dimensions | Height - 42cm Width - 20cm Depth - 32cm |
| Net Weight | 9Kg |
| Finishes | Standard finishes available American Black Walnut and black parchment hide. Bespoke options available in various hides and hardwood. Mundorf capacitor, Inductor and Cryo treated internal wiring as standard |
As with the Regis Mkll Masterpiece edition, the Voltaire ll are also one of my favourite designs and this particular pair was designed around inspiration from Morgan cars which also have an interior design option of Brooklands swede green hide and Zebrano hardwood, perfectly combining subtle colours with the striking nature of Zebrano. The addition of quilting the hide further compliments the similarities of classic car interior and a Masterpiece edition.
Carefully selected cross-over components, silver foil internal wiring over silk and oil dielectric with additional dampening of the cross-over board are just some of the many extra features a masterpiece edition has over standard models along with a 50mm thick baffle and WBT pole connectors and a choice of floor spikes or Panzerholtz dampening feet to suit various flooring and acoustic space.
For further details about this product please contact me.
| Technology | Scandinavian Birch ply braced construction |
| Description | 2 way, linear phase, infinite baffle design |
| Drive Units | 1 x 234 mm doped plastic coned bass/mid range unit 1 x Low mass high precision Ribbon Tweeter |
| Frequency Response | 30Hz to 40KHz +/- 2dB on axis |
| Impedance | 8 Ohms nominal, 5 Ohms minimum |
| Sensitivity | 88dB spl at 1 metre on axis. 2.83V input |
| Crossover | 2nd order bass roll-off 2nd order tweeter |
| Power Handling | 200W peak un-clipped programme |
| Dimensions | Height - 100cm Width - 28cm Depth - 39cm |
| Net Weight | 40Kg |
| Finishes | Masterpiece 1 off edition
Bespoke options available on request Various spike/feet options dependant on floor and room acoustics
|
Years of research into a dedicated headphone amplifier which can drive the most difficult of loads with ease has culminated into a design based around the most dynamic amplifier modules in their class.
A dual mono design throughout using N-core technology and fully balanced with our own pre-amp internal buffer stage and a 4 pole Swiss Alps volume control.
Internal wiring uses Duelund Coherent Audio copper and cotton in oil wire for input signal path and Harmonic Technology UP-OCC wire for output signal path.
The HA1 headphone amplifier has been primarily designed to perfectly match the incredible HiFiMan Susvara and HE100se headphones along with matching headphone cables specifically deigned for each headphone and available as a package deal.
HA1 features
Please enquire about Burr hardwood front panel options.
| Output power | 4W RMS into 30 ohms ohms
2.5W RMS into 60 ohms |
| Class of operation | Class D |
| Minimum load | 4 ohms |
| Frequency response and Distortion | 10Hz to 50kHz @ 0.0015% |
| Signal to noise ratio | 121dB |
| Output impedance | 1.5 mohms |
| Peak output current | 12 amperes |
| Damping factor | >1000 |
| CMRR | 71dB |
| Power consumption | 350W |
| Input voltage | 240V/50Hz |
| Output connectors | Silver plated 4 pin XLR or 6.3mm jack |
| Input connectors | True Balanced XLR or unbalanced RCA |
| Input impedance | 47Kohms |
| Size | 240W x 320D x 115H (mm) |
| Weight | 5Kg |
Based around a dual mono design using the incredible Hypex N-core 250W modules and using the same high quality aluminium case as our matching MV3 pre-amp, MC1 phono-stage and HA1 headphone amplifier to give a stunning rack of high end Hi-Fi equipment.
Essentially the same sonic characteristics as our MB2 250W mono block design and using the same high quality components, input buffer stage and internal wiring.
High current and high damping factor to drive the most difficult of loads with ease and accuracy. Incredible imaging and soundstage capabilities along with immense detail retrieval.
SA1 features
Please enquire about Burr hardwood front panels
| Output power -Dual Mono design |
250W x 2 RMS 4 ohms 130W x 2 RMS 8 ohms Continous output power 50W x 2 RMS |
| Class of operation | Class D |
| Minimum load | 4 ohms |
| Frequency response and Distortion | 10Hz to 50kHz @ 0.0015% |
| Signal to noise ratio | 121dB |
| Output impedance | 1.5 mohms |
| Peak output current | 17.5 amperes |
| Damping factor | >1000 |
| CMRR | 71dB |
| Power consumption | 350W |
| Input voltage | 240V/50Hz |
| Output connectors | Rhodium plated binding posts |
| Input connectors | Un-Balanced RCA |
| Input impedance | 10Kohms |
| Size | 240W x 320D x 115H (mm) |
| Weight | 5Kg |
Our latest Preamplifier is a full tube line stage design using 4 x 12AX7 specially selected tubes.
MV3 follows in the footsteps of the incredible MV2 using the same principles of minimum of active parts and high quality passive components in the signal path. A no compromise design and attention to components and internal wiring brings a product worthy of the Robson brand and a great match to our range of power amplifiers.
Great design and the use of very high quality components has created a pre-amplifier of exceptional abilities and able to drive the most difficult of power amplifier loads to below 10Kohms.
| Vacuum tube compliment | 4 x JJ or Tung Sol 12AX7 |
| Input impedance | 47Kohm |
| Input | Unbalanced |
| Output | Unbalanced |
| S/N | 88dB |
| Frequency Bandwidth | 10Hz - 45KHz |
| Dimensions | 240W x 320D x 117H |
| Weight | 7Kg |
Our flagship reference Pre-amplifier to compliment our mono block power amplifiers and Phono stage Pre-amplifiers.
As standard hand made using very high quality components in the signal path, our MV2 valve pre-amplifier will compete with the very best products out there regardless of cost.
Again……listening is believing!!
Design specifications include dual mono power supplies with each channel supplied by it’s own high voltage and filament rails via a tube rectifier and feeding separate regulators to give incredible stereo separation.
A very simple but pure signal path based around the 6SN7 audio tube and using a single output capacitor which can be specifically chosen for it’s integration to solid state or valve amplifiers based on input impedance compatibility.
MV2 features :
Purity of signal path is critical in the design of any amplifier to give incredibly black backgrounds and the retrieval and portrayal of the tiniest musical passages and notes.
If you have never heard a valve based pre-amplifier of this class you will be amazed at how much information you may be missing in your vinyl or digital music collection.
| Vacuum tube compliment | 4 x Tung-Sol 6SN7GTB
1 x 6X5 Rectifier tube |
| Input impedance | 47Kohm |
| Output Impedance | 150 ohms |
| Inputs | 2 x RCA Line inputs |
| Output | RCA Line out |
| Frequency response | 10Hz - 50KHz |
| Power consumption | 50VA |
| Gain | 22dB |
| THD | 0.3% 1Khz / 4Vef |
| S/N Ratio | 88dB |
| Dimensions | 380W x 320D x 130H ( without tubes ) |
| Weight | 11Kg |
MB10 represents a reference grade power amplifier based around the Hypex N-Core 1200 series power amplifier modules.
Designed for Ultra high end audio reproduction and a perfect match for our MV2 tube Pre-amplifier in both impedance and sonic characteristics.
Sonic performance at it's highest level!
MB10 embodies up to 1200 Watts of Class D power with total control over all areas of the audio bandwidth to give an incredible sense of delicacy and uncompromising sound performance for the most demanding of listeners.
MB10 creates vividness and complex natural colours reenacting the original performance with the utmost precision to give the listener the ultimate aural experience.
MB10 Features
Please enquire about solid Burr hardwood front panel options.
| Output power | 1200W 2 ohms, 700 4 Ohms, 400W 8 ohms |
| Class of operation | Class D |
| Minimum load | 2 ohms |
| Frequency response and Distortion | 10Hz to 50kHz @ 0.001% |
| Signal to noise ratio | 137dB |
| Output impedance | 3 mohms |
| Peak output current | 40 amperes |
| Damping factor | >1000 |
| CMRR | 55dB |
| Power consumption | 650W |
| Input voltage | 240V/50Hz |
| Output connectors | Rhodium plated or gold WBT binding posts |
| Input connectors | Switchable Balanced XLR or un-balanced RCA |
| Input impedance | 5.3Kohms un-buffered true balanced/ un-balanced |
| Size | 240W x 320D x 115H (mm) |
| Weight | 5Kg |
Arabis is an ultra high end mini monitor based around Purify Audio's ultra low distortion 4" bass/mid transducer and a Morel dome tweeter.
Although these were originally designed for near field monitoring, they are equally at home as full range loudspeakers due to the huge bass capabilities of the Purify transducers.
Incredibly low distortion, purity of sound and detail resolution are where these monitors excel. Bass response is beyond understanding for such small loudspeakers.
Arabis are one of the new designs of high end loudspeaker models from Robson Acoustics which now incorporate Purify Audio transducers which we believe to be amongst the very best in the world. Combined with a compact Acuflex dome tweeter from Morel to give an amazing soundstage and tonal accuracy.
All loudspeakers are handcrafted in solid hardwood which are finished in a hard wax polish.
Cross-over design and internal wiring as always, using very good quality components and mounted on well dampened boards and using Mundorf " Angel hair" as internal dampening material. This creates a very flat response across the frequency band.
Orders now being taken with a choice of hardwoods.
The current model shown is in spalted copper beech.
| Technology | Solid hardwood construction |
| Description | 2 way, linear phase, closed cabinet design |
| Drive Units | 1 x 125 mm Ultra low distortion Purify Audio bass/mid range unit 1 x Morel high precision soft dome Tweeter |
| Frequency Response | 40Hz to 20KHz +/- 2dB on axis |
| Impedance | 4 Ohms nominal, 5 Ohms minimum |
| Sensitivity | 84dB spl at 1 metre on axis. 2.83V input |
| Crossover | 2nd order bass roll-off 2nd order tweeter |
| Power Handling | 150W peak un-clipped programme |
| Dimensions | Height - 26cm Width - 16cm Depth - 22cm |
| Net Weight | 8Kg each |
| Finishes | Standard finishes available in Oak or Beech Bespoke options available in various hardwood. Mundorf capacitor and Cryo treated internal wiring upgrades available upon request. |
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