7 Pin Tube Universal Gain Stage DEMO and SETUP скачать в хорошем качестве

7 Pin Tube Universal Gain Stage DEMO and SETUP

In this episode from Mad Scientist Guitar Lab, I put the universal gain stage test harness to the real test — comparing how different vacuum tubes actually sound when amplifying a guitar signal. 👉 Link to 7 Pin Tube Universal Gain Stage schematic: http://www.bellyjellymusic.com/pdf/7p... You’ll hear side-by-side demos of the 1S5, 1U4, 6C4, and 6J1 tubes — from the weak and noisy to the surprisingly magical. While an emissions tester tells one story, the sound of these tubes tells another. I also cover some of the quirks of hot-filament tubes, microphonics, and biasing tricks that affect tone, noise, and gain. Highlights: Testing and measuring the 1S5 and 6C4 tubes on the restored Knight 600 tester Accidentally over-volting a fragile 1.4V filament (learn from my mistake!) Listening tests using the 1U4 tube — and discovering how microphonics color the sound Swapping in the 6C4 for cleaner gain and less hiss The surprise standout performer — the Chinese 6J1 that adds real sparkle and inspiration Exploring how bypass capacitors, cathode resistors, and plate loads affect tone The emotional side of DIY amp building — when a good tube just makes you want to play This video closes out the tube test harness series with practical tone comparisons and a reminder that sometimes, the best tube isn’t the one that measures the highest — it’s the one that moves you to play. 👉 Subscribe to 📺    / @madscientistguitarlab   Links to schematics: http://www.bellyjellymusic.com/pdf/7p... http://www.bellyjellymusic.com/pdf/12... http://www.bellyjellymusic.com/pdf/el... Reference Links: Pentaboost schematic by Rick Holt: https://www.freestompboxes.org/viewto... Rob Robinette Trainwreck Pages: https://robrobinette.com/The_Trainwre... Tube amp schematics archive: https://www.tubesandmore.com/schematics Affiliate links (Reference material): The Guitar Amp Handbook by Dave Hunter: https://amzn.to/4o1iKxB Tube Amp Schematic Bible (A-F): https://amzn.to/3ITr57s Tube Amp Schematic Bible (G-Z): https://amzn.to/4q6C4vg Affiliate links (Parts used in this project): 8 position rotary switch: https://amzn.to/42UYghF 9-pin tube sockets: https://amzn.to/4gW0rYj 7-pin tube sockets: https://amzn.to/46QbDks SPST switches: https://amzn.to/4nZClhs DC-DC Buck converter: https://amzn.to/4pSDbyq Solid core hookup wire: https://amzn.to/4pPtmkG