3 Working Modes: Lo Boost/Boost Off/Hi Boost
Lo Boost: Boost a narrow band of high frequencies a little bit.
Boost Off: No boost is engaged.
Hi Boost: A higher amount of boost is engaged
Full metal shell
Very small and exquisite

True bypass

Specifications

Input: 1/4” monaural jack (impedance: 1M )
Output: 1/4” monaural jack (impedance: 470 Ohms)
Power Requirements: AC adapter 9V DC (center minus plug)
Current Draw: 20 mA