Boss ACS Acoustic Singer Live, Amplifier for Acoustic Guitar and Vocals, 60 W Bi-Amp Design, 2 Independent channels with discrete analog input circuit and the 3-band EQ, Speakers: Specially developed 6.5"" woofer and tweeter, Guitar channel with ""Acoustic Resonance"" to make the sound of piezo pickups sound natural, Microphone channel with phantom power, XLR / TRS combo port, Chorus FX for guitar channel, Delay / Echo FX for microphone channel, Additional delay / echo-FX for both channels can be controlled independently, Harmony feature automatically generates vocal harmonies by real-time key / chord analysis on guitar input, Integrated looper, Anti-independent feedback control for each channel, Two XLR DI sockets for the output of the individual channels (or directly by the effect section) or both channels, USB port for direct recording to a connected computer, Dimensions (L x W x H): 367 x 274 x 314 mm, Weight: 10.5 kg, Matching footswitch available under Article Nr. #279994# (not included)