50w Class A 807 PPP Valve Amplifier Refurb - Part 1

50w Class A 807 PPP Valve Amplifier Refurb - Part 2

Vacuum Tube Push-Pull Amplifier Kit - Part 1

Testing 807 Beam Tetrode Valves/Tubes - Part 1.

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Amps Under $500 | A Tech's Perspective | Part 1 of a Series

Valve/Tube Matching - Is It Important? Matching 807's

Sterns Stereophonic Preamp Refurb - Part Four.

Valve Amp Delayed Start- Fault Finding & Wotnot.

McIntosh MC240 Amplifier Full Restoration and Recap in Detail

Luxman SQ38FD Tube Amplifier Repair

Fault finding & fixing a valve amp.

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Class A audio amplifier kit test & review

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The Worst Filter Capacitors I Have Ever Seen.....and Heard :)

6V6 JCM800 PUNCHPLATE Amp Build (Free Plans)

How to Make High Quality Stereo Audio Amplifier