The GR Bass ONE 800 is a powerful, lightweight bass amplifier head built for players who demand clarity, speed, and professional performance. Delivering 800 watts of clean power, the ONE 800 provides exceptional headroom, tight low-end response, and detailed articulation that faithfully reproduces the natural character of your instrument.

Designed with GR Bass’s signature minimalist approach, the ONE 800 offers intuitive controls and a highly transparent tonal platform that works equally well for modern hi-fi tones, punchy fingerstyle articulation, and aggressive stage performance. Compact and road-ready, this amplifier is ideal for gigging bassists seeking boutique-level tone, reliability, and portability in a high-powered professional bass head.

Power

800W RMS 4 ohm, 400W RMS 8 ohm

Dimension

W10.4 x D8.6 x H2.2 Inch

Weight: 5.2 lbs

Front panel

- Tuner / Vu-Meter

- Input

- Aux In

- Gain

- Deep filter

- Low

- Mid Low - Mid High

- High

- Bright filter

- 3 freq for mid Low - High

- Pure Sound

- Volume DI (antibump)

- Headphone master - output

- Master

- Mute

Rear Panel

- Input 230-115v (auto selectable)

- 9 Volt 300mA

- Send/Return

- Pre/Post DI

- GND lift

- DI Output

- Speakon Ch1

- Speakon Ch2

- Fan (Studio/Live mode)

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ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • One 800
Finish
  • Black
Categories
Year
  • 2026
Made In
  • Italy

Product safety information may be available here.

SoCal Bass & Fx

San Marcos, CA, United States
Joined Reverb:2020

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