Gerald Weber has written his 5th book, "Sound Advice from Gerald Weber" a new tube amplifier book with over 500 pages
In Geralds 5th book about Vacuum Tube Amplifiers, he answers over 300 questions including:
Page 82 Adding a 3-knob reverb on any blackface amp for under $10
Page 85 Getting Blues Harp tone from any guitar amp
Page 95 How to re-lacquer a tweed amp
Page 104 - Converting a Bassman to cathode bias
Page 122 Line out mod for any tube amp
Page 130 Getting the Layla tone from your Tweed Champ
Page 137 Rewiring a 6SC7 to 12AX7
Page 150 Converting 6L6s to 6V6s on Twin, Showman, Pro or Bandmaster
Page 162 Filter Chokes de-mystified
Page 173 Putting reverb on both channels of a Fender amp
Page 226 Troubleshooting any reverb circuit
Page 241 Amp mods for 12-string Electric use
Page 288 Understanding Electronic Concepts
Page 319 Troubleshooting noise, hum and hiss
Page 366 Diode Clipping
Page 373 Negative Feedback Explained
Page 374 Output transformer/Speaker deliberate mismatch
Page 399 Speaker Codes
Page 402 Converting 7591A to 6L6
Page 429 Testing a pot for Audio or Linear taper
Page 465 Switchable tube/solid-state rectifier
Page 483 Reading resistor codes
Page 489 Calculating resistor wattage
Page 519 Grounding tips and tricks
Page 528 Calculating Wattage Output
And much, much more.