[SOLD] assembled SRPP preamps (PCBs) with tubes

[NovaPA]

SOLD

Hello!

There is a sale of pre-amps assembled boards, built under the SRPP scheme, with output transformer.
Universal application.
Schematic


For sale 3 PBs with different modigications:

1) One board with 2 stages (stereo), output transformer TOT94 and separating capacitors - Audiophiller, axial 1uF
+ 4 tubes (2x6Н23П + 2х6Н1П)

- 14 euro + shipping (about 10 euro)

2) One board with 1 stage,  output transformer TOT63 and separating capacitors - K73-16 2x5,6uF
+ 2 tubes (6Н23П + 6Н1П)

- 10 euro + shipping (about 10 euro)

3) One board with 1 stage,  output transformer TOT63 and separating capacitors - AV MKP 2x2,2uF
+ 2 tubes (6Н23П + 6Н1П)

- 10 euro + shipping (about 10 euro)

Taking off all 3 PCBs + 8 tubes = 30 euro + shipping (about 18 euro)

Please, see all photos

 

[ruffrecords]

What is the ratio of the transformer?

Cheers

Ian

 

[NovaPA]

hi

TOT63 - in "single" boards: Ratio is 0,42 of whole windings
Datasheet

May reverse transformer

TOT94 - in "double" board: Ratio 1:1

 

[NovaPA]

Sold