The Best Amplifier of 4. Showing QI Adjust and modification.

Over the last 2 years I have built a number of amplifiers. I now show the best one to build of the lot. I also show how to adjust the QI of the L12/2 amplifier kits.
You may contact me directly here, [e-mail] I try to answer all questions but please note, I cannot help with questions about other equipment or provide any design or repair services.