TAD BiasMaster, purchased from Thomann and used only once to set the bias on my ENGL 840/50 power amp.

The unit is in excellent cosmetic and working condition.

I originally bought it specifically for maintaining this power amp, which has recently been sold. Since I do not plan to use any 6L6-based tube power amplifiers for the foreseeable future, I no longer have any need for this device.

✅ Purchased from Thomann
✅ Used only once
✅ Like-new condition
✅ Fully tested and working

A great tool for quick and accurate bias adjustment on compatible tube amplifiers.

🎁Bundle Offer

For users running 6L6-based tube amplifiers, I also offer a special bundle deal including both the TAD BiasMaster and the matched quad of TAD Premium 6L6GC-STR Red Base tubes.

This gives you:

• a brand-new premium tube set,
• the proper tool needed to adjust bias after installation.

A convenient turnkey package for maintaining and retubing your amplifier.

Feel free to contact me for the bundle price 🤙