Tube Radio Amp #1 TS9 Mods Tier 2: Tier 1 mods

Tier 2: Tier 1 mods & Volume Output Knob mod

Diode Mod: This mod adds a toggle switch to select different diodes for more hardclipping options

but I noticed the unit sounds amazing stacked into another one of the same

The v1 of the Grey Mater took 2 years of meticulous design based on the vintage grey version

Tier 2: Tier 1 mod and Preamp Gain Mod

Tube Radio Amp #1 TS9 Mods Tier 2: Tier 1 modsWe hacked this vintage GE tube radio to be a guitar amp! 1 4" input jack on the back. The volume knob is the one furthest to the left. The next knob is "AFC" is a click knob and seems to add some mids and resonance. The other two knobs are for aesthetics only. This model doesn't get very loud, making it perfect for a bedroom practice amp or recording amp. There are two speakers inside.