About this episode
It's the 150th episode of the Truth About Vintage Amps! How did that happen? Thanks, as always, for being a part of the world's finest call-in tube amp repair show. Want amp tech Skip Simmons' advice on your DIY guitar amp projects? Join us by sending your voice memo or written questions to podcast@fretboardjournal.com! Include a photo, too. Some of the topics discussed this week: 1:26 The Esparto fireworks storage facility explosion (link); salvaging organ pedals 6:22 Jason's life updates: Issue 57; Fretboard Summit (link); trail running; watching the 2025 Western States Endurance Run 11:46 Standel amplifier quirks, voltage regulator tubes, Dave's Hot Chicken kale slaw 16:36 Our sponsors: Grez Guitars; Emerald City Guitars and Amplified Parts! Amplified Parts is having a Fourth of July sale right now (act fast) 19:17 The Fretboard Summit Pinewood Derby race 22:03 Honorary sponsor: Tin Can Valley Letterpress (link) 23:10 Recommended reading: Matthew Zapruder's 'Story of a Poem' (Amazon link) 25:22 An Ampeg V4 / V4B bias circuit baffler 28:07 Single-ended amp 101; Stouffer's Hotel cherry chocolate cake 41:19 Channel jumping on a Silvertone 1482 and other amps; Neil Young 46:00 Music recommendation: Round Eye from Shanghai 47:11 Why do these homebrew 5F1 clones have blackened input jacks? 49:31 The Fender 400PS schematic 54:18 Harmony 420 amps, making a pre-amp out of a Heathkit volt meter 1:00:05 The Fretboard Journal's Dumble short film with Ben Harper (YouTube link) 1:01:46 Dave Hill at the 2025 Fretboard Summit! 1:02:34 Redwood cabinets on Gibson Falcons; Lima, Peru's Los Saicos band 1:12:21 A-Z Darts in Sacramento (link) 1:16:04 Getting a mono tube hi-fi for music playback 1:23:56 Listener Yann at Body and Soul Instruments (Instagram); the new Robert Johnson book (Amazon link) 1:25:24 Keeping the 12v DC power supply on old PA amps? Doug Hoffman 1:30:54 How far should I mod this 1980 Fender Deluxe Reverb? 1:37:24 Ishi in Two Worlds (Amazon link) Recorded July 4, 2025.