MXR Booster mini. Nothing miniature about what it does to your tone. Up to +25dB boost, with the beautiful warmth and gritty flavour voiced after an Echoplex preamp. You'll love it.

Model: MXR M293 Booster Mini
Made in: USA, recent model
Type: clean boost
Power: standard 9v negative supply, not included
Mods: velcro added
Accessories: original box and docs
Condition notes: used, no major marks, excellent condition