The Boss GT-100 is an advanced guitar multi-effects processor featuring dual LCD screens, COSM amp modeling, and an "Accel" pedal. It includes a phrase looper, 400 program memories, USB audio/MIDI interfaces, and supports extensive parameter control.Key SpecificationsSpecificationDetailsAmp ModelingAdvanced COSM Amp ModelingAD/DA Conversion24-bit + AF Method (Adaptive Focus method)Sampling Rate44.1 kHzProgram Memories400 total: 200 User, 200 PresetEffectsCompressors, Overdrives/Distortions, Preamp, EQ, Delays, Choruses, Reverbs, Pedal FX, and specialized types (e.g., Tera Echo, Rotary, Sitar Sim)LooperPhrase loop: 38 seconds (mono), 19 seconds (stereo)DisplayDual backlit Graphic LCDs (132 x 64 dots)Dimensions542 mm (W) x 271 mm (D) x 80 mm (H) / 21.375" x 10.6875" x 4.0625"Weight4.8 kg (approx. 10 lbs 10 oz)