Introduction:
HV11 design reference CKII headphone amplifier circuit, the main body of the circuit is pure class A, full discrete, no feedback, full direct couple (no input capacitance and feedback capacitance), with DC servo;
Overall listening:
Direct, undecorated, high detail.
HV11 main components:
● Electrolytic capacitors use ELNA, Panasonic M, chemical and other audio capacitors
● Taiwan 1% precision metal film resistor, 5W non-inductive power resistor
● DC servo uses TI TL081 FET type single op amp
● The input tube is PHI silver surface BC546-556, and the other small triode tube is F BC550-560C
● The power tube is Toshiba audio tube, 2SA1358-2SC3421, exquisite.
● Non-polar capacitors use PHI and AV audio capacitors
● Use the ALPS Type16 potentiometer and the YONGSHENG gold-plated headphone jack to configure a 30mV protection circuit.
Input voltage: AC 115V or 230V (optional)
Size: 220mm*50mm*200mm (W*H*D)
Weight: 2.5KG
Package includes:
HV11 Class A Headphone amplifier X1
