Mooer Audiofile, Headphone Amplifier for Pedalboards, Analogue Class A amplifier circuit, Specially designed for use on guitars and bass pedalboards, Can also be used as a high-fidelity booster, Integrated speaker simulation, True bypass, Controller for master, Power / bypass toggle switch, Cab Sim toggle switch, Status LED, Metal housing, Bypass footswitch, 6.3 mm Stereo input jack (for mono and stereo use), 6.3 mm Stereo jack output, 3.5 mm Stereo jack MIX MONO output (for stereo output of mono signals), Power supply via optional 9V DC (Mooer PDNW-9V2A-MP) power supply 2.1 mm x 5.5 mm coaxial connector and polarity (-) inside (power supply not included), Current consumption: 50 mA, Dimensions (L x W x H): 94 x 42 x 52 mm, Weight: 150 g@+*Note:* Battery operation is not supported.@+@+*Note:* Register your product at www.w-distribution.com/warranty and extend the warranty to 4 years.