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