Product details:
HA4 is not only a pure Class A headphone amplifier, but also a compact high-end preamplifier. The design is similar to DAP-800 and can drive various headphones. It has Sugden VCV circuit and is coupled to a pure MOSFET output stage HA-4 adopts a discrete constant voltage series power supply. High input impedance ensures absolute minimum signal loss and ideal current gain.
Product parameters
PCB size: 191 * 170 mm
Transformer parameters: 30W AC18V * 2
Input: XLR one group RCA one group
Output: One set of RCA+one set of headphone input
Input impedance: 20K Ω
Gain: 16db
Channel separation:>90db
Frequency response:>0.3DB20Hz-30KHz
Signal to noise ratio:>95db
Output impedance: 1 Ω
Packing list
1× HA4 circuit preamp board
