Roland Guitar Combo Amplifier, 49 Keys (BC-HOT) Advanced synthesizer with independent analog and digital sound engines Discrete analog synth engine (four parts) with 2 x OSC, Filter, Amp, 4 x Env (2 x Pitch, Filter, Amp), and 2 x LFO per voice plus Analog Dry Out for raw signal output Analog filter section features 4-Pole, transistor-ladder, and multi-mode (LPF/HPF/BPF) filters with supremely smooth, natural response to knob movements OSC section includes Cross Mod, Ring Mod, and OSC Sync, all of which can be used simultaneously LFO rate covers a wide range from ultra-slow to ultra-fast Incredibly fast attack envelope time Separate digital section built around SuperNATURAL synth engine (four parts, 64 voices) thats compatible with INTEGRA-7 sound libraries from Rolands online Axial sound portal Digital parts can be routed through the analog filter section for warm, organic results Comprehensive effects with MFX for all parts plus five system effects (Reverb, TFX1, TFX2, Delay, and Master EQ) Flexible routing options for highly creative sound design