Yamaha THR30IIA Wireless, Acoustic Amplifier, Battery operated (battery included), 2 Channels, 30 Watt stereo amplifier, 3 Authentic sounding microphone models plus nylon string and flat modes, Professional quality microphone preamplifier with XLR input, Bluetooth support for audio playback, Editor and remote control, Hi-Fi audio playback with Extended Stereo Technology, The internal wireless Line 6 receiver works with the optional Line 6 Relay G10T transmitter (not included), Built-in rechargeable battery allows use anywhere, Class-compilant USB connectivity for recording and playback, Includes Cubase AI for PC / Mac and Cubasis LE for iPad, Equipped with: 2 x 3.5"" Speakers, Closed housing, Controls: Tone Select, Tone Select, Bass Middle, Treble, Effect, Reverb, Volume, Reverb, Volume, Switch: User Memory 1-5, Bluetooth, Tap Time / Tuner, Stereo Imager, Effects: reverb, chorus, delay, Instrument input: 6.3 mm jack, Microphone input: XLR, Aux input: 3.5 mm jack, Line output (L&R):; 2x 6.3 mm jack, Headphone output: 3.5 mm stereo jack, USB, Dimensions (W x D x H): 530 x 264 x 314 mm, Weight: 6.4 kg, Includes power supply 15V 3A