The perfect combination of classic and modern, the GR GROOVE series will surprise you with its quality and incredible power and an incredible tube preamp with 2 pcs 12AX7.

The GROOVE series takes up and perfects the philosophy of PURE SOUND, a fundamental characteristic of GR products, with the possibility of adding the characteristic sound only valves can give you.

A 4-band equalizer will allow you to sculpt the sound according to your needs but that’s not all: you can choose 4 frequencies for the mids, and the deep and bright filters will allow you to add punch and / or definition to the equalization.