Line6 Helix Guitar Processor, Guitar Processor, Next generation dual DSP based HX Modeling Engine with 4 discreet stereo-signal paths, 50 Guitar amp models, 12 bass amp models, 37 speakers, 16 microphones and 104 effects, Imported IRs (impulse responses) with up to 1024 / 2048 samples, 12 Pressure sensitive foot switches for editing, The Hands Free Pedal Edit mode sets the effects parameters onto the switch and expression pedal, Near-Instant foot switch and controller assignment, Up to 3 expression pedals, CV/Expression output, Amplifier switching output and extensive MIDI control, Extensive inputs and outputs for the seamless integration of entire rigs, 10 Inputs, 12 outputs (including four FX loops), 8 In / 8 Out USB audio interface, AES / EBU, SPDIF and VDI interfaces, 123 dB Dynamic range on the guitar input for enormous depth and low noise, Robust construction, Dimensions (W x D x H): 55.8 x 30 x 8.5 cm, Weight: 6.6 kg