Valeton GP-150

The Valeton GP-150 is a compact digital multi-effects processor: a self-contained floor unit that puts amp and effect modeling, presets, an IR loader, a drum machine lineage and a built-in expression pedal in one metal box. Valeton announced it in May 2026 alongside the larger GP-180, at a suggested retail price of $169.99¹. Valeton describes it as "compact, fully loaded, and designed to deliver complete functionality in a streamlined form"².

The pitch is the all-in-one floorboard: instead of a pedalboard of separate boxes, one unit covers your whole chain, and it can run on an internal battery. For players who prefer separate stomps, Valeton frames the choice as "smooth, all-in-one operation or the open possibilities of a modular setup"².

What it is and what it does

The GP-150 is a multi-effects pedal in floorboard form: a rugged metal chassis measuring 200 × 139 × 55mm and weighing 958g, holding the whole signal chain digitally³. It runs at 24-bit / 48kHz with a signal-to-noise ratio of 110dB³.

The controls: two footswitches and an expression pedal

The control surface is where the GP-150 defines itself. Valeton says the "GP-150 carries the iconic GP-100 layout with dual footswitches and an expression pedal"², and Premier Guitar's announcement confirms the set: two footswitches with an expression pedal¹. Pedal of the Day adds that you "use dedicated switches for tap tempo and CTRL assignments"⁴.

What the built-in expression pedal means in practice was the point Cláudio Ribeiro drew out in his Bass Musician Magazine review⁵:

In other words, the pedal is not just for preset scrolling: it can drive volume, wah and parameter control while you play⁵.

The contrast with the sibling GP-180 is control density: Valeton says the "GP-180 steps up the control experience with three footswitches and ten dedicated module shortcut keys"². The GP-150 trades that for the smaller footprint.

Power, battery and charging

The GP-150 runs two ways. On the desk or pedalboard it takes DC 9V, center negative, on a 5.5×2.1mm plug³. On the move it runs from an internal 3000mAh / 3.7V battery³, and Valeton says charging is supported through the Type C port or the DC port¹.

Valeton does not publish a battery runtime figure, only the 3000mAh capacity³.

MIDI and connections

MIDI control is supported through USB, Bluetooth, and a 6.35 mm TRS jack³, which covers the three common cases: a computer or controller over USB, wireless control over Bluetooth, and a hardware MIDI controller over a TRS cable. The audio path is a 1/4" TS input at 1M Ohm impedance, with the right output wired as a TRS balanced connection for running long lines to a desk or interface³.

Where it comes from: the GP-100 layout and GP-180 engine

The GP-150 sits between two Valeton lines. Its body and control layout come from the GP-100, the earlier floorboard unit with a built-in expression pedal and a 99-pattern drum machine⁶². Its processing comes from the GP-180: Valeton states that "both processors are built on the same core technology, the same new modeling engine, and the same next-generation algorithms"².

Ribeiro places the pair in the family tree in his review: the GP-150 and GP-180 "are more closely related to the GP-100 platform, positioned as more complete, floorboard-style sol[utions]" than the compact GP-5 and GP-50⁵. So the GP-150 is effectively the GP-100's body running the GP-180's brain.

Firmware has moved since launch: Valeton's GP-150 online manual documents firmware V1.1.1, a file created and updated on 26-08-2026³⁷.

What reviewers said

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