HYPA 1 class "A"

This is Hi-End custom made preamplifier/headphone amplifier working in class "A" the whole time. The unit is using modules from known HiEnd audio manufacturer in Europe that makes expensive audio gear. Volume is controlled by microprocessor and special low signal relays with precisely matched resistor network from -127.5dB to 0dB. Display is programmable, names for each input can be selected. By-pass function for input 1 can be enabled or disabled. Display can be programmed to shut off to work in pure Hi-End, it shuts off microprocessor. Left and right channel is on separate board to ensure the best channel separation and crosstalk. Preamp section is powered by low-noise linear power supply that produces only 1.6uV of noise in 0-100kHz bandwidth. Local pickup welcome.

Specifications:
Frequency respose: 20 - 20 000 Hz +0/-0,05dB
5 - 500 000 Hz +0/-3dB
Gain: 10dB
Power output: 0,7W 300R
2,5W 32R
THD: 0,001 % (1 - 20 kHz, 4V, 1 kOhm)
0,001 % (1 - 20 kHz, 4V, 1 kOhm)
IMD: 0,001 % (13+14 kHz/19+20 kHz, 4V , 1kOhm)
0,001 % (13+14 kHz/19+20 kHz, 4V, 1kOhm)
Input impedance: 10 kOhm
Output impedance: 10 Ohm
Power supply: 2x22 V