It's the 137th episode of the Truth About Vintage Amps podcast, where amp tech Skip Simmons fields your questions on all-things-tube amps! This week, we talk to special guest, Steve Carr of Carr Amplifiers! 

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Some of the topics discussed this time around:

2:22 Steve Carr (Carr Amplifiers) joins us for an enlightening talk about prototyping, speaker cabs, Solen caps, tone controls, and so much more. He even fields a few of your questions!

1:14:17 Big M speaker cabinets

1:16:08 Red Norvo "In a Mist"

1:17:49 Did a rubber tube amp mount just fix my microphonic amp? Easy Brussels sprouts

1:21:45 On the bench: An Epiphone Electar Zephyr

1:23:16 Pre-amps in front of amps that already have pre-amps; the WEM amps used at Live at Pompeii (link); Selmer reverb tanks; was this Philco amp made by Bogen?; pizza stones 

1:31:55 Out-of-range potentiometers

1:35:05 Ballast resistors in field coil amps

Plus Hurdy gurdys and more.