Welcome to the 74th episode of the Truth About Vintage Amps Podcast, the bi-weekly show where amp tech Skip Simmons answers all of your pressing guitar amplifier questions. No topic is too basic... or seemingly too complex! This week's episode is sponsored by Amplified Parts and Grez Guitars.  Some of the topics discussed this week:  5:53 Old typewriters, again ('The Typewriter Revolution,' thanks Doug F!); a Canon amplifier from Australia; Monkey Shoulder Scotch Whisky 9:35 Bitcoin mining, explained    12:44 Recommended reading: 'The Birth of Loud' and testing amps with full volume    15:40 Recommended reading: 'The Unidentified' by Colin Dickey; Bitcoin as casino chips; a DIY trem?    20:56 Bitcoin mining, again; powering a tube amp with a battery/generator; a 15" speaker cabinet for a Masco MA-17   29:39 Sierra Nevada's Summer Break beer    30:35 Using a Fender's second input for speaker-driven reverb   33:36 Best uses for a Masco EMM-6 pre-amp mixer     37:03 B+ on listener Geoff's tamed Fender Twin   41:20 Can you source amp hum just from hearing it?    45:35 Building a Princeton clone with not-quite-exact capacitors; cleaning pots     56:56 Skip is angry; 'Sessions with Sinatra'    1:06:13 Fixing the reverb on a Gibson Falcon; Bobby Charles; the California Honeydrops; Eddie Hinton   1:13:46 John Fogerty replies Co-hosted by the Fretboard Journal's Jason Verlinde. Email or send us a voice memo to: podcast@fretboardjournal.com or leave us a voicemail or text at 509-557-0848. And don't forget to share the show with friends.