Special guest Charles Baty returns to the Truth About Vintage Amps Podcast for our final episode of 2019.    Submit your vintage amp questions to Skip here: podcast@fretboardjournal.com or, better yet, leave us a voicemail or text at 509-557-0848. * SUPPORT TAVA & ANGELA INSTRUMENTS *  Order a PDF download of Steve Melkisethian's tweed Princeton amp project here.  This week’s sponsor: Grez Guitars (link) Some of the topics discussed on this episode: 1:46 An update on the Angela 5F2 Princeton schematic/article 4:23 TAVA Podcast Giveaways: A Stew-Mac Champ kit; an A/B box from Skip (winners to be announced during episode 27) 12:43 Reserve one of Manbroidery's two-prong TAVA hats (Instagram link)  14:33 More cast iron 17:26 Triad Electronics' return to guitar amp transformers, plus Benson Amps 25:02 Charles Baty returns: Red Norvo, Tal Farlow, Chico Hamilton, Red Garland & Chile Colorado! 48:21 Gibson GA8T (Discoverer) amps 51:14 A 1966 Fender Vibro Champ with a mystery hum 57:02 Silverface Fender Champs versus 1960s Gibson Skylark / Atlas / etc. 59:11 Sonic variations between vintage matching, serviced Fender amplifiers 1:03:59 Using a Variac and a power strip to power up multiple amps simultaneously 1:07:53 Vintage guitar amps with built-in legs 1:12:25 A request for a single-episode Champ schematic walk-through 1:12:46 25uf cathode bias 12ax7 cathode-bypass caps on Champs 1:17:19 Getting up to speed on electronics basics 1:20:08 Amp class 1:23:14 Buck Nickels and Loose Change – "Makin' Wine" (Larry Cragg in action! YouTube link.) 1:23:39 A new speaker configuration for a Danelectro DS100 cab 1:28:08 Gibson Invader amps 1:31:11 Grid leak biasing vs. cathode biasing 1:34:56 Modifying the Angela dual-singled amp with Russian 6P1P-EV tubes 1:36:35 Australia, Toyota Land Cruisers and fly fishing guides 1:38:43 Swollen caps in a 1979 Fender Deluxe Reverb and tips on drilling holes in a chassis Special thanks to TAVA listener Eric Casimiro for helping us edit this week's episode.