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The Truth About Vintage Amps with Skip Simmons

Jun 4, 2022

It's the 95th episode of the Truth About Vintage Amps! Despite some technical / Zoom difficulties, Skip and Jason talk about replacement transformers, smoking Earthsound amps, bias, and more. 

This week's episode is sponsored by Calton CasesJupiter Condenser Co.Amplified Parts and Grez Guitars. You can also use the discount code FRET10 to save 10% off your Izotope purchase.

Support us on for added content and the occasional surprise. 

Some of the topics discussed this week:

1:32 Econoco, the giant tube rebuilding place in Woodland, California (link, h/t

3:16 Cordless yard tools

4:31 What's on Skip's bench: A Charlie Christian-style amp head for Todd Clinesmith; John Munnerlyn's Magnatone-inspired guitars, the power transformer from a blonde Tremolux head; blue molded caps

9:56 The Truth About Vintage Amps Patreon page (link); congrats to Patreon supporter Josh F. on winning a Body and Soul fuzz pedal (Body and Soul on Instagram)

14:18 Nate the syrup guy's 1965 Vibro Champ, redux; inverse feedback; reversing the primary leads on the power transformer

20:31 Beginner's Corner: Cathode bias vs. fixed bias vs. grid bias

25:07 Find this guy: Ham operator Armond Noble, the Kon-Tiki, World Radio News

27:00 A 1964 Fender Super Reverb with a strange volume taper

30:57 A tuxedo Princeton going to the Los Angeles Guitar Show

31:45 Mid-'60s Ampeg B-18N with a weird noise and a single glowing power tube that fixes itself with the standby switch

37:32 A loose rectifier tube in a 1968 Fender Deluxe Reverb

41:32 Fumes from soldering

43:35 Fixing the polarity at a local dive bar

50:38 The goat murder trial is over

53:25 Sourcing the washer behind the jewel light on a Silverface Champ

58:04 Schematics for a Webster TP12-1 PA, making a Blackstar cleaner by swapping the pre-amp tube

1:03:44 A smoking 1973 Earthsound amp

1:11:20 A Harmony H400 combo up for grabs; the Fender Bantam Bass schematic

1:15:09 Replacement output transformers for Fender Champs, Princetons, and Deluxes; rewinding output transformers

1:26:37 Literary recommendation: 'Guns, Germs, and Steel: The Fates of Human Societies' by Jared Diamond

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