Version 1: DIY kits (not contain tube 12AX7*2 and 12AU7*2) customer assembly is required.
Version 2: Finished board (not contain tube 12AX7*2 and 12AU7*2) it&39;s already assembled.
Version 3: Finished board (contain China tube 12AX7*2 and 12AU7*2) it&39;s already assembled.
Input voltage: AC 220V+AC 10V+AC 6.3V. (High pressure range 200V-260V)
PCB size: 155*121mm.
Tube: 12AX7*2+12AU7*2+6Z4*2.
If you need finished products, please click the picture below.