The VOX Adio Air BS is perfect for today?s bassist, providing a wide range of modern and classic sounds designed specifically for bass, lightweight portability, and Bluetooth connectivity.50 Watts 2 x 3? SpeakersBluetooth connectivity with Acoustage technology allows for wireless music playback and operationElegant, lightweight design Battery or AC powered USB outputNumber of Amp Models11 (17 when using Tone Room)Number of EffectsEffects 1 types: 4 (11 when using Tone Room)Effects 2 types Delay/Reverb: 4 (8 when using Tone Room)Number of User Programs8 (two banks x four programs)Wide Stereo Effect (Virtual Surround)Off, OnNoise ReductionOff, 1 - 4 stepsAudio EqualizerOff, Loud, Bass Boost, Mid Boost, Treble BoostInput/Output JacksINPUT Jack, AUX IN Jack, PHONES Jack, USB (Type B) PortWireless MethodBluetooth (A2DP Sink)Bluetooth low energy (MIDI)Power Amp OutputMaximum approx. 25 W x 2 RMS @ 8 ohmsWhen Using Batteries: Maximum approx. 2.5 W x 2 @ 8 ohmsSpeakers3"", 8 ohms x 2Signal Pro