Pricing and availability
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Average Price: $819
High-end/Boutique
$200
$801+
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High-end
Price History
Based on price data from 1 merchant for "GRBass One 800 Amplifier". Prices shown reflect NEW condition. Tracking began Apr 19, 2026.
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Description
Elevate your bass game with the GRBass One 800 Amplifier, a powerhouse that packs 800 watts of pure, unadulterated sound into a compact, road-ready design. This amplifier head is engineered for the discerning bassist who demands both performance and versatility in their gear. At its core, the One 800 offers a robust EQ section with controls for Gain, Low, Mid Low, Mid High, High, and Master Volume, allowing you to sculpt your sound with precision.
What sets the One 800 apart is its selectable frequency bands for both mid low and mid high ranges, enabling you to tailor your tone to any musical setting. The amplifier also features Deep and Bright Boost switches for extra tonal richness, along with a Pure Sound switch that bypasses the EQ for a clean, direct signal. Whether you're on stage or in the studio, the switchable LED/Fan Mode and built-in mute switch ensure seamless operation.
Connectivity is a breeze with front inputs for your instrument, auxiliary devices, and headphones, while the rear connectors include an FX loop and an XLR DI-Out for direct recording. Additional features like the ground lift and DI pre/post switch make this amp a reliable choice for any professional setup. Crafted in Italy, the GRBass One 800 is your ticket to a powerful and customizable bass experience.
Key Features:
- Power: 800 W RMS
- Impedance: 4 Ohm
- Comprehensive EQ controls: Gain, Low, Mid Low, Mid High, High, Master Volume
- Selectable mid frequencies: Mid Low (185, 375, 800 Hz), Mid High (600, 1200, 1800 Hz)
- Deep and Bright Boost switches
- Pure Sound switch (EQ Bypass)
- Switchable LED/Fan Mode
- Mute switch
- Ground lift, DI pre/post switch
- Effects loop: Serial
- Front connectors: Input, aux in, headphones out
- Rear connectors: FX Loop (Send, Return), XLR DI-Out
- Made in Italy
Product specs
| Available since | April 2020 |
| Power | 800 W |
| Equalizer | 4-Band |
| Compressor | No |
| Limiter | No |
| Effects Processor | No |
| External effect loops | Yes |
| Speaker Connector | Jack, Speakon |
| Headphone Output | Yes |
| DI Output | Yes |
| Tuner Out | No |
| Rack mount | No |
FAQs
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What is the power output of the GRBass One 800 Amplifier?
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The GRBass One 800 Amplifier delivers 800 watts of power, making it suitable for medium to large venues and ensuring a robust sound for live performances.
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Does the GRBass One 800 Amplifier include a built-in compressor or limiter?
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No, the GRBass One 800 Amplifier does not include a built-in compressor or limiter, allowing users to choose external effects to tailor their sound.
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What type of connectivity does the GRBass One 800 Amplifier offer for speakers?
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The GRBass One 800 Amplifier provides both Jack and Speakon connectors for versatile speaker connectivity options.
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Is the GRBass One 800 Amplifier suitable for use with headphones?
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Yes, the GRBass One 800 Amplifier includes a headphone output, making it convenient for silent practice sessions.
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Can I use external effects with the GRBass One 800 Amplifier?
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Yes, the GRBass One 800 Amplifier features an external effects loop, allowing you to integrate your preferred effects pedals into your setup.
Videos
Premier Guitar
Review Demo - GR Bass Amplification One800
Reviews
PROS
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Offers noise-free activation and sensitive, quiet potentiometers
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Provides fantastic sound calibration, both indoors and outdoors
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Features a game-changing Pure Sound switch for enhanced audio control
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Has thump, punch, and clarity that stands out in its class
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Includes versatile options like adjustable headphone and DI outputs
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Compact size with a powerful performance-to-weight ratio
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Auto-selectable voltage input for international use
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Phenomenal sound heft and distinct character compared to competitors
CONS
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Control panel design is cramped, making adjustments difficult
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Micro-switches for frequency adjustments feel flimsy and hard to use
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Overly bright LED lights can be distracting
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Instruction manual lacks comprehensive documentation for all features
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Some users find the extensive features overwhelming and hard to manage
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Packaging quality is subpar for the product's weight and value
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about GRBass One 800 Amplifier.
Comparisons
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GR Bass Pure 800 is noted for clean, transparent tone, unlike Markbass, GK, and Warwick heads which add color through their preamps.
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One user found the GR Bass One mini head with a GR Bass 1x15 cab to sound better than various SVT setups, weighing only 22 lbs in total.
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The GRBass One 800 is favored over the EBS Reidmar for preserving sound integrity without distortion.
Source
Features and functionality
User experience
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Users find GR Bass cabinets lightweight, offering portability benefits despite less desirable sound quality compared to their amps.
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Owners report that the GR Bass One 800 pairs impressively with Broughton SV-Pre pedals for a sound that rivals classic SVT rigs, without the weight.
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Owners appreciate the amp's "honest" sound, indicating minimal coloration, which appeals to those who prefer a transparent tone.
Source
Use cases and applications
Critic Reviews
5.0 out of 5
Based on 1 Review and 1 Rating
174
Light in weight, heavy on sound!
Bassist Robert Harper uses the ONE 800 Amp Head POWER 800 W RMS 4 ohm, 700W RMS 8 ohm
DIMENSIONS : 31 x 19 x 5 cm
Weight: 2,85 Kg
COLOURS black, white, custom colour
FRONT PANEL - Tuner / Vu-Meter - Input - Aux In - Gain - Deep filter - Low - mid Low - mid High - High - Bright filter - 3 freq for mid Low - 3 freq for mid High - Pure Sound - Volume DI (antibump) - Headphone master - Headphone output - Master Ch1 - Master Ch2 - 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)
Genre Usage
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