Description
ZERO-ZONE PRT-13A Balance Tube preamplifier board. This is a True balance preamp. the first stage voltage amplification uses 12au7 common cathode.The output stage uses 6dj8 as cathode output. the sound is very excellent. It can input and output XLR. also can connect as Single ended input/output. note when input Single ended audio. only output Single ended. No XLR output. PCB Size:254mm*230mm Use Tube : 2pcs 6DJ8 ( Can use 6N11 or 6922) 2pcs ECC82 ( Can use 12AU7) Works voltage: 0-AC220V (90mA) 0-AC9V (1.6A) 0-AC9V (1.6A) we can provide the schematic for this board via email. NOTE: This is the Bare PCB. You need to match all the parts yourself.
This preamp board delivers outstanding sound quality with its true balanced design. The 12AU7 and 6DJ8 tubes create a warm, detailed tone, and the flexibility to switch between XLR and single-ended connections is a huge plus. The PCB is well-built, and the option to use compatible tubes like 6N11 or 6922 adds versatility. Perfect for audiophiles looking to upgrade their setup with a rich, dynamic tube sound. Highly recommended for DIY enthusiasts!