Details:
Phono board pcb size:120 x120mm
High voltage board pcb size: 125 x100mm
Filament psu board pcb size:159 x50mm
Use 6X5 tube rectifier
ECL82 as voltage regulator
The low frequency of the guts dives deeper, and the mid-high frequency is more charming
W1: left channel input
W2: right channel input
GND under C1 and C2: Audio input GND
W3/W4: Filament power input / DC12.6V
W5: High voltage input/about DC280V
W6: Hight voltage GND
W7: High voltage input about DC280V
W8: Audio output GND
W9: left channel output
W10: right channel output
Use tube:
ECC83*4 + 6X5 *1 + ECL82 *1+0B2 *1
High voltage psu board input voltage:
365V-0-365V 365V-0-365V
0-6.3V 0-6.3V
Filament power supply board input voltage:
AC16V-0-AC16V
Package included:
Phono amplifier board pcb x 1
Power supply board pcb x 2
Not included any parts !
Filament power supply board:
Pcb size:159x50mm
Input voltage:AC16V-0-AC16V
Output voltage:DC6.3V to DC12.6V adjust
IC1=LM723
D1=MUR1620
T1=TIP142
D3 install LED
Note :
if install VR1,not need to install R3 and R5
if install R3 and R5,not need to install VR1,output voltage is fixed DC12V ,max current is about 4A