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GRBass AT Cube 350 main image

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GRBass AT Cube 350

GRBass AT Cube 350

$874.00 to $1,329.00 Price Tier: High-end

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Page last updated Mar 15, 2026

Pricing and availability

We compare 600+ stores and found this item at 2 stores. Prices updated February 24, 2026.

Store

Reviews

Price

Upfront Guitars

$1,329.00

Dijkmans Guitars

$874.00

Average Price: $1,102

High-end/Boutique

$200

$701+

Price Tier

In the Bass Combo Amplifiers category, GRBass AT Cube 350 is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

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Description

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The AT Cube 350 Bass Combo by GRBass

The GRBass AT Cube 350 is an ultra-lightweight yet powerful bass combo amplifier designed for professional players who need portability without sacrificing tone. Delivering 350 watts of clean RMS power, it features a 1x12" custom speaker paired with a high-quality horn tweeter for clear highs and tight low-end response. The innovative AeroTech carbon fiber cabinet keeps the weight extremely low while maintaining strength and resonance control. A comprehensive EQ section with Deep and Bright filters, plus a Pure Sound option, allows precise tonal shaping or completely transparent output. With built-in tuner, DI output, effects loop, aux input, and headphone output, it is equally suited for practice, studio work, and live performances.

Specs:

• Power Output: 350W RMS @ 4 Ohms
• Speaker: 1 x 12" custom Jensen/Sica woofer
• Tweeter: 1" horn driver with 3-position switch
• Frequency Response: 38 Hz – 18 kHz
• Sensitivity: 98 dB SPL
• Cabinet: AeroTech carbon fiber construction
• EQ: 4-band EQ (Low, Mid Low, Mid High, High)
• Filters: Deep and Bright switches
• Pure Sound: Bypass function for transparent tone
• Tuner: Integrated chromatic tuner with VU meter
• Inputs: Instrument input, Aux in
• Outputs: Balanced DI out (Pre/Post switch, Ground Lift), Headphone out, Speakon speaker out
• Effects Loop: Send/Return
• Power Supply: 115V / 230V auto-select
• Dimensions: 40 cm (W) x 35.5 cm (D) x 45.5 cm (H)
• Weight: Approx. 7.2 kg (15.9 lbs)

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See also: Bass Combo Amplifiers, GRBass, GRBass Bass Combo Amplifiers, High-end Bass Combo Amplifiers

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Added to Equipboard on 02-24-2026 by

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Gear IQ 14646