The Hot-Rod Plexi pedal is inspired by vintage amps of the same nickname. While those hulking stacks are known to sound best at ear-bleed levels, this pedal can painlessly transform your existing amp without pulling a muscle or mandatory rig cranking. With the Hot-Rod Plexi, you can completely change the personality of a clean amp or use it as an instant mod to a dirty amp.
In Stock mode, itβs as if you have the signal path from the input jack to the speaker jack (without the speaker emulation) of a stock β68 Plexi. Hot engages an extra β12AX7β pre-amp gain stage. With its own level control, Hot can kick in up to 28dB of pre-amp boost --a pretty insane amount of gain.
http://www.tech21nyc.com/products/effects/plexi.html
This Pedal is currently available.