This is the kit you need to solder yourself, (no tubes)
Not every batch of components are exactly the same as the picture, but the quality is the same.
Chassis structure: 8mm aluminum panel, back box size 415x100x300
Aluminum panel 480x120, back box 1.5mm steel plate, 410 wide x 100 high x 300mm deep, chassis with solid core aluminum knob, aluminum puller, power supply holder, power switch, foot, indicator, mounting screws, with arc
(
No manual, parts list, need DIY electronic knowledge. Risk of failure, you need to know how to make the tube preamplifier work.)
Schematics available for your reference
A series of high end tube phono amplifiers and tube preamp board kits produced by ZHI, you can find ZHI in my store.
The circuit is referenced from the famous classic circuit ARC, fully balanced design.
The voltages have been marked on the PCB.
Balanced Input - Balanced Output, Balanced Input - Single Ended Output, Single Ended Input - Single Ended Output, Single Ended Input - Balanced Output.
Use 12AU7 x 2 pcs, ecc88 x 2 pcs, 6x4 one peice