Features: 8 modulation effects.  True stereo signal processing.  Tone Lock function and one preset save/recall.  New generation 32-bit DSP, high performance 24-bit 44.1 kHz AD/DA convert.  Input/output Sensing circuit select optimized routing automatically.  True bypass.  Runs on battery or AC power adapter.    Specifications: Effect types:8 modeling modulation models;  Presets:1 storable user preset;  Sampling frequency:44.1kHz;  A/D converter:24-bit;  Signal processing:32-bit;  Frequency response:20Hz-20kHz 1dB;  THD+N:93dBu (<0.003%) A-weighting;  Dynamic range:100dB;  Input:-20dBVat1M ohm;  Output:-10dBV (Output load impedance of 10kohm or more);  Power:9V DC (powered by 1 * 9V battery or adapter, no included);  Color:Blue;  Pedal size:12.2 * 7.2 * 4.7cm / 4.8 * 2.8 * 1.9in;  Pedal weight:263g / 9.3oz;  Package size:12.5 * 9 * 5.5cm / 4.9 * 3.5 * 2.2in;  Package weight:326g / 11.5oz;    Package included: 1 * Guitar Effect Pedal;  1 * User Manual(English & Chinese)