![amplifier - Need help adding gain overdrive/control to my tube guitar amp design - Electrical Engineering Stack Exchange amplifier - Need help adding gain overdrive/control to my tube guitar amp design - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/dDUDM.png)
amplifier - Need help adding gain overdrive/control to my tube guitar amp design - Electrical Engineering Stack Exchange
![AIYIMA T3 Tubes HiFi MM Phono Preamp for Turntable Preamp with Gain Stereo Audio for Phono Audiophile: Amazon.de: Electronics & Photo AIYIMA T3 Tubes HiFi MM Phono Preamp for Turntable Preamp with Gain Stereo Audio for Phono Audiophile: Amazon.de: Electronics & Photo](https://m.media-amazon.com/images/I/51hgYcJbrWL._AC_SL1000_.jpg)
AIYIMA T3 Tubes HiFi MM Phono Preamp for Turntable Preamp with Gain Stereo Audio for Phono Audiophile: Amazon.de: Electronics & Photo
Beacon Tube Amps - TWIN TRIODE GAIN FACTORS The table below gives the gain factors for various twin triode preamp tubes with the same pin-out. All of them are drop in replacements.
![12AX7 S4GB High Gain Vacuum tube Selected for Guitar/bass Double triode Number of pins (num): 9 Base: Noval Content 1 | Conrad.com 12AX7 S4GB High Gain Vacuum tube Selected for Guitar/bass Double triode Number of pins (num): 9 Base: Noval Content 1 | Conrad.com](https://asset.conrad.com/media10/isa/160267/c1/-/en/1534610_LB_00_FB/image.jpg)
12AX7 S4GB High Gain Vacuum tube Selected for Guitar/bass Double triode Number of pins (num): 9 Base: Noval Content 1 | Conrad.com
![LEAD GUITAR TONES FROM THE 90s | KOCH Superlead High Gain Tube Preamp | demo by RICCARDO GIOGGI - YouTube LEAD GUITAR TONES FROM THE 90s | KOCH Superlead High Gain Tube Preamp | demo by RICCARDO GIOGGI - YouTube](https://i.ytimg.com/vi/Sb2CuMYwwHY/maxresdefault.jpg)