Предварительный усилитель Audio-GD Master-9

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 . Supper 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