Robson Acoustics

MC1

MC1 Phono Stage Description MC1 – Tube Phono Preamplifier Designed around the legendary 12AX7 vacuum tube in a 3 stage amplification stage using 2 x 12AX7 tubes for gain and the third for a buffered output to achieve lower impedance and better drive capability. As with all out products the quality of components is always of the highest standard. Mundorf silver/gold oil capacitors are used in the signal path and Dueland Coherent Audio cables used for all internal wiring along with high quality RCA connectors for purity of signal transmission. MC1 features : Free lifetime modification to MM or high output MCBuilt in SUT’SEnhanced and perfected RIAA EQMundorf silver/gold oil signal capacitorsDuelund oil/cotten internal wiringThis model is primarily a MM Phonostage with built in SUT’s for typical MC use, how-ever for MM or high output MC cartridges a free modification is available to convert this to any cartridge and associated impedance and capacitance for perfect compliance. SE model comes with Miflex copper paper/oil capacitors and Duelund silver internal wiring. PriceStandard £1600SE Model £2000 Enquire About product Gallery Specifications Gallery Specifications Input MC RCA (Adaptable) Frequency Response +/- 0.6dB over RIAA curve Gain MM – 44dBMC – 78dB Noise -78dB Input Impedance 100ohms Output Impedance 520ohms Vacuum Tube Compliment 12AX7 X 3 Dimensions 240w x 320d x 115h (mm) Weight 5kg

Reference Phono Stage

Reference Phono Stage Phono Stage Description The Masterpiece Phono stage uses an existing incredible design and applies the same level of component, internal wiring, tube  and connector upgrades which only applies to the Masterpiece collection for the connoisseurs of high end hifi. Both the Masterpiece Pre-amplifier and Phono stage use simple signal path topology where every signal component is chosen for it’s absolute quality and construction. Internal wiring uses the same ultra high purity silver wire as used in the Ref interconnect cables. Signal capacitors are replaced with V-caps CuTF Reference grade units and resistors with Charcroft Z foil. Rhodium plated connectors and power inlet socket are standard. Power supply capacitors are the excellent Mundorf tube caps for ultimate power supply delivery and all pub’s are mounted for micro vibration absorption and dissipation. Vacuum tubes are also dampened. Masterpiece Edition Phonostage features : Charcroft  Z foil resistors in the critical signal path for low noise and a more natural sound. V-Cap CuTF  signal path capacitors. Lundahl MC step up transformers (SUT) using amorphous cobalt core and dual coil structure with Cardas high purity wire. Silver internal wiring and Rhodium plated RCA connectors Toroidal transformers with B+ regulators for low PSRR figures. High amplification, super accurate RIAA EQ , low output impedance and low distortion. All cabinet construction is made with exotic hardwoods and a copper top panel with additional damping. Available with built in Lundahl amorphous core SUT’s for MC cartridges or as a seperate custom built SUT in Bolivian rosewood or other exotic hardwood. Price£3600 Enquire About product Gallery Specifications Gallery Specifications Input MM (RCA) – 47k MC (RCA) – adjustable input impedance Frequency Response +/- 0.6dB over RIAA Curve Gain MM – 52 dB MC – 70 dB using Lundahl amorphous core transformers Noise -82dB Input Impedance 47k Output Impedance 450 ohms Overload 3.3mV in Power Supply B+ regulators PSRR by 60dB Low noise toroidal transformers Vacuum Tube Complement 12X4 Rectifier tube and 4 x 6922 tubes Dimensions 380w x 320d x 130h (mm) Weight 8kg

Masterpiece Phono Stage

Masterpiece Phono Stage Masterpiece  //  Phono Stage Description The Masterpiece Phono stage uses an existing incredible design and applies the same level of component, internal wiring, tube  and connector upgrades which only applies to the Masterpiece collection for the connoisseurs of high end hifi. Both the Masterpiece Pre-amplifier and Phono stage use simple signal path topology where every signal component is chosen for it’s absolute quality and construction. Internal wiring uses the same ultra high purity silver wire as used in the Ref interconnect cables. Signal capacitors are replaced with V-caps CuTF Reference grade units and resistors with Charcroft Z foil. Rhodium plated connectors and power inlet socket are standard. Power supply capacitors are the excellent Mundorf tube caps for ultimate power supply delivery and all pub’s are mounted for micro vibration absorption and dissipation. Vacuum tubes are also dampened. Masterpiece Edition Phonostage features : Charcroft  Z foil resistors in the critical signal path for low noise and a more natural sound. V-Cap CuTF  signal path capacitors. Lundahl MC step up transformers (SUT) using amorphous cobalt core and dual coil structure with Cardas high purity wire. Silver internal wiring and Rhodium plated RCA connectors Toroidal transformers with B+ regulators for low PSRR figures. High amplification, super accurate RIAA EQ , low output impedance and low distortion. All cabinet construction is made with exotic hardwoods and a copper top panel with additional damping. Available with built in Lundahl amorphous core SUT’s for MC cartridges or as a seperate custom built SUT in Bolivian rosewood or other exotic hardwood. Price£5000 Enquire About product Gallery Specifications Gallery Specifications Input MM (RCA) – 47k MC (RCA) – adjustable input impedance Frequency Response +/- 0.6dB over RIAA Curve Gain MM – 52dB MC – 70dB using Lundahl amorphous core transformers Noise -82dB Input Impedance 47k Output Impedance 450 ohms Overload 3.3mV in Power Supply B+ regulators PSRR by 60dB Low noise toroidal transformers Vacuum Tube Complement 12X4 Rectifier tube and 4 x 6922 tubes Dimensions 440w x 370d x 185h (mm) Weight 20kg

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