Your Amp's Bias is Key to Getting Good Tone - Check it Frequently
11:24
$3 Tube Amp BIAS PROBE Made in UNDER 30 MINUTES!
24:08
How to Bias a Quad or Quartet of Output Tubes......Theory and Practice
22:47
Carl Hartman Tone Preserver - A "must have" for any tube amp owner!
20:13
Dr. Z Guitar Amplifiers — How They're Made
20:04
Biasing a vintage 100w MARSHALL
25:24
Biasing Tube Amps
19:17
Why I Bought A Brown Box To Protect My Vintage Tube Amps - Ask Zac 127
12:53