Riverside...it is a culmination. We analyzed a lot of analog and tube circuits, and that's the result. With its extremely wide coverage, rich harmonic structure, and tone reminiscent of tube drive, it offers a new world of DRIVE. The analog input stage is a class-A JFET analog multi-stage gain circuit. This stage is digitally controlled to feed the DSP gain stage that follows this section while maintaining maximum headroom. This section also reproduces the player's touch, nuances, and response to guitar volume exactly as if connected directly to a tube amplifier. That signal creates a complex harmonic structure that becomes the basis for distortion in the DSP section. You can play the best sounds in clean, mild overdrive, high-gain leads, and heavy saturated distortion. Key Specifications and Features: Low Gain Channel: Smooth classic overdrive High Gain Channel: Modern saturated distortion 3-band EQ: Bass, Middle, Treble・PUSH mid: Post-analog mid-band EQ push (boost)・Presence: Adjustment function with connected amplifier (dark to bright) Noise reduction: (can be turned on/off) FAVORITE switch: Save/recall favorite settings EXP pedal input: Expression mode = control of various parameters, Volume mode = output control BOOST pedal input: Gain boost or Favorite Out function Digital control Class A JFET analog gain circuit DSP gain stage High impedance Mono input Mono output 24bit/96kHz A/D & D/A Lightweight and durable anodized aluminum case. 9VDC power supply. Current draw: 250mA.・Size: 11.4 x 10.2 x 4.4 cm