GR Bass Groove 800 amplifier

The GR Bass Groove 800 blends classic and modern tone in one head, built around a tube preamp with two 12AX7 valves for warmth you just can't get from solid state alone.

The Groove series carries forward GR's PURE SOUND philosophy with the option to dial in that distinctive valve character whenever you want it.

• 4-band EQ with selectable mid frequencies for precise tone shaping
• Deep and Bright filters to add punch or definition
• PURE switch to bypass filters and EQ entirely for a flat signal, useful when pairing with an external equalizer or switching instruments mid-set
• Two Aux-Ins: a front input you can monitor through the speaker, and a rear XLR input routed only to the headphone output
• Independent headphone volume control for standalone monitoring
• Onboard D.I. suitable for both live and studio use

Specifications

• Power: 800W
• Dimensions: 34 x 26 x 7.2 cm (13.4 x 10.2 x 2.8 in)
• Weight: 3.5 kg (7.7 lbs)
• Black finish with brushed aluminium front panel

Front panel

• Tone Filter: activates a mid-scooped EQ
• Mid Low: selectable frequency 220Hz - 620Hz
• Mid High: selectable frequency 720Hz - 1750Hz
• Deep: activates the deep filter
• Bright: activates the bright filter
• Pure: activates the Pure function
• D.I.: independent volume
• Pre/Post: selects pre or post EQ for the D.I.

Rear panel

• Speaker outputs: 2 Speakon combo jacks (2.7 ohm minimum)
• Footswitch input with Mute and Drive
• D.I. with anti-bump protection
• Aux-In XLR dedicated to headphone output