Features: 12 bass speaker design 110w rms (4ohm) 4 band eq (low,low mid,mid high,high) for precise tonal shaping 9 powerful built-in effects(chorus, delay etc.) Stereo auxiliary input for connecting cd player,drum machine etc. Headphone output for silent practice Preamp output Extension speaker jack Footswitch (eff on/off) Specifications: Rms:110w (8 ohm) Input sensitive/impedance:input (channel a)/-10dbu/1m&omega aux in/-10dbu Speaker :30cm (12inch) Control:gain,volume,bass,treble,bright,boost Channel b:eq(on/off),high,mid high,low mid,low Eq:e.Level,e.Mode,eff on/off Led:e.Level,e.Mode,eff on/off Connection(1/4):nput(mono),aux in(stereo)headphone (stereo),pre out(mono)foot switch(cha/chb,eff on/off) Power supply:ac 220v/50hz Power consumption:130w Dimension:397*324*420 mm Packing size:453*367*477mm Net weight:16.8kg