Audio-gd :: Master-9 Real Balanced ACSS design, Pure Class A (9W @ 40 ohm), Preamp & Headphone amp, Super Exponential Volume Characteristic
Price: 2275.34 EUR ( 1849.87 EUR Net Price)
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MASTER 9 - Balanced Discrete Headphone Amplifier & Preamplifier
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Audio-Gd Master-9

Master-9 is a true balanced design applying the newest ACSS design, preamp and headphone amp. Full range of inputs and outputs allow connect the gear to any other device working in world common standards. Inputs and outputs are balanced XLR standard, unbalanced RCA or ACSS compatybile with products from KRELL CAST, SATRI. Master-9 applies ultra-low distortion in full range of volume level.

  • Fully balanced pure class A design built by discrete analog stages without any OPA or coupling caps in the signal channels.
  • Non- feedback ACSS analog output stage.
  • Total applied 12 pcs exact matching 150W transistors (In total 1800W) as the output stages and PSU stages for implement large class A output power.
  • Uses three R-core transformers (In total 135W) separate power supplies for the digital control components, right and left channels.
  • More than 55,000uf audio grade NOVER capacitors are used to ensure ample and smooth power delivery.
  • A total of 9 groups of PSU's for dedicated DC supply.
  • Uses most Hi-end grade parts and exactly matched transistors, OCC wires.
  • Four-channel 100 steps digitally controlled relay-based volume control avoids channel imbalance and improves sound quality.
  • Super Exponential Volume Characteristic, easy match the volume with very high headphone / speaker without change the gain mode.
  • 20DB gain can drive the low sensitivity headphone very well.
  • 5 groups input: RCA X2, XLR X2, ACSS X1
  • Preamp output : XLR / RCA / ACSS
  • Headphone amp output: 4pins XLR X1 / 3pins XLR X2 / 6.3MM X1
  • Static storage mode control software for avoid disturb sound quality, the MCU output once control data and save in the perform parts ,then stop output data until users next operation.