Painlessly transform your amp without pulling a muscle or cranking to ear-bleed levels. Stock mode achieves the signal path of a stock ‘68 Plexi (without speaker emulation). Hot engages an extra “12AX7” pre-amp gain, up to 28dB of pre-amp boost --pretty insane gain. 100% analog. Made in U.S.A.
Utilizes standard 9V alkaline battery (not included) or optional power supply Tech 21 Model #DC4-A (or #DC2, which has been discontinued but is still compatible).