Audio-GD Master-1

Master 1 is compatible with KRELL amplifiers. A cable can be made with one side connecting to Master 1 ACSS outputs, other side to a KRELL amplifier CAST inputs. The ACSS output pins: Pin 1, GND Pin 2, Hot Pin 3, Cold KRELL amplifiers have lower gain versus audio-gd Master series amplifiers when using the CAST connection, so customers can custom order the Master 1 to have higher ACSS output gain if expecting to connect to KRELL amplifiers. Fully balanced class A design built by discrete analog stages without any OPA or coupling caps in the signal channels. Non- feedback ACSS analog output stage. Uses three R-core transformers (135W total) with separate power supplies for the digital components and right and left channels. More than 50,000uf audio grade NOVER capacitors are used to ensure ample and smooth power delivery. A total of 8 groups of high-quality class A parallel PSU's, four double-stages for dedicated DC supply. To achieve a high S/N, the control circuit is powered with separate regulators. Uses high grade parts and exactly matched transistors. Four-channel 99 steps digitally controlled relay-based volume control avoids channel imbalance and improves sound quality. 5 analog inputs: RCA X2, XLR X2, ACSS X1 Preamp output: XLR / RCA / ACSS Memorizes all settings and resumes the last settings when powered on.