Twice a month, guitar amp guru Skip Simmons fields your questions on tube amp buying, restoration and repair. Co-hosted by the Fretboard Journal’s Jason Verlinde.

Special thanks to our sponsors: Mono Cases and Grez Guitars.

Submit your guitar amp questions to Skip here: [email protected] or by leaving us a voicemail or text at 509-557-0848.

Some of the topics discussed on this episode:

3:27 Skip's roll call of A/B box pre-orders 5:11 We discuss episode 12's Baffler, the 3 Channel Psychedelic Control Center 9:10 This episode's Baffler 11:44 An unlikely backup amp suggestion 14:30 This episode's sponsors: Grez Guitars and Mono Cases and TAVA t-shirts 17:00 Little Charlie's recipe for Spanish rice (yes, our first recipe) 18:22 More parenting tips 19:11 A preview of our next amp schematic 101 22:34 More Champ mod talk: One difference between Blackface and Silverface Fender Champs, the Hammond 290AX transformer 27:38 Gain stage basics: What makes an amp distort?  32:14 Bringing a Blackface Fender Tremolux with a solid state rectifier back to stock 37:21 A '60s Kay "Vanguard" 704 43:54 An amp motherlode in Lodi, California 45:35 A Princeton Reverb with a pilot light that is too bright 48:43 A Gibson GA-20 RVT found in a trash bin 54:28 Channel jumping and a vintage Airline Model 62-9013A 1:01:48 The pop you hear turning off your amp 1:07:03 A speaker dilemma on a 1962 Brownface Deluxe 1:09:28 Converting a PA head to a tube mic pre-amp 1:14:20 Turning an old tube radio into a guitar amp 1:18:18 Norwegian blues and Helge Tallqvist 1:19:11 This week's recommended music 1:20:49 High-powered tube amps and the Hiwatt 400 bass amp 1:25:32 Using a light bulb limiter instead of a variac 1:27:34 Speaker replacement on a Gibson GA-40 1:31:50 A tribute guitar repairman Glen Quan, inventor of the Badass bridge