The Line 6 Otto Filter is a ToneCore(TM) series Auto-Wah and Filter interchangeable module for the separately purchased ToneDock Mono or Stereo guitar and bass effect foot pedal docking stations. With ToneCore modules and docks, a player's effects arsenal may be easily and inexpensively expanded.
The ToneDock mono and stereo stompbox base stations are powered by a standard 9 volt battery, or the optional DC-1 power supply.
Otto Filter - Auto-Wah and Filter Module for ToneDock Interchangeable Foot Pedal
1 Year Warranty