Details:
Based on Bryston BP26 preamplifier circuit.
Signal input: 3 groups of RCA+1 group of BAL
Output: 1 group of RCA and 1 group of BAL.
Input voltage: DC+/-24V and AC10-12V
Output delay circuit, the output signal does not pass through the delay relay contact, so as to minimize the sound pollution.
PCB size: 285*168MM
DALE resistors and BC resistors
Capacitors :Philips BC axial hifi capacitors and Elna audio cap
Output delay circuit, the output signal does not pass through the delay relay contact, minimize the sound dye.
This preamp board completely no general DIY before the noise, bad sound, ugly feeling, the sound is very transparent atmosphere, with a sense of music, let unknowingly put the volume constantly open and do not feel agitated, the tone is full of beauty like true degree high, in fine detail, majestic when you want to atmosphere!
Note:
Diy Kit 1:PCB+resistance+Switch board PCB
Diy Kit 2:As the picture show ,Not included all capacitance ,XLR and RCA
Diy Kit 3: Full preamp board kit ,as the picture show !
Assembled Board 1:as the picture show ,not included XLR and RCA socket !
Assembled Board 2:as the picture show , included XLR and RCA socket !
Suitable PSU Board:Assembled mark psu board ,+-DC24V
Suitable transformer :https://www.ebay.com/itm/354443352748
Suitable chassis : https://www.ebay.com/itm/354636766239