• GRBASS ONE 350 front

GRBASS ONE 350 Bass Amplifier


Italy’s GRBass has recently announced the ONE head series of bass amplifiers. This is the “One 350” version, all the amps in the range are very high spec with many class leading features such as direct output to power pedals, a Pure Sound mode which fully bypasses the amplifiers extensive EQ and lets the sound of your own bass thunder through untouched. The Pure Sound mode is a very rich addition to this head, switch between guitars in this mode and the difference is clear. Each amp in the range has a four-band EQ with three-way frequency switches for the low mid and high midranges as well as deep and bright filters. Other features include a built-in 24-LED tuner, a headphone output, an aux input and switching of the display mode across the LED functions. You will be noticed as the ultra-bright LED’s flash away all through your performance. Great amps and not a lot of UK dealers as yet, get along and try one out for yourself!

Contact Us

Categories: , , , .



ONE 350


350W RMS 4 ohm, 170W RMS 8 ohm


Gain control
Bass, Mid-Low, Mid-High and High equalization control
Mid-Low frequencies switch
Mid-High frequencies switch
Deep setting
Bright setting
Pure setting
Mute setting
DI volume
Headphone volume
Master volume control


Input jack


LINE OUT: balanced XLR,
EFFECT SEND: unbalanced, max.
TUNER OUT: unbalanced, max.
SPEAKER OUT: speakon/1/4″


25 x 19 x 5 cm


WEIGHT: 1.6 Kg