ISP Technologies Deci-Mate

The ISP Technologies Deci-Mate is a micro noise gate pedal that puts the company's Decimator noise reduction circuit into a mini enclosure small enough for a crowded pedalboard. Announced on September 10, 2018, it was described by Premier Guitar as "the first micro-pedal to offer the company's unique noise reduction system"¹. Where a full-size Decimator takes up a standard pedal footprint, the Deci-Mate, as Gearnews put it, "squeezes the circuit into a micro enclosure"².

For a player, what that means is single-knob noise reduction. Guitar.com described it as combining "the brand's flagship Decimator circuit with a pedalboard-friendly enclosure," and noted it is "ideal for canceling single-coil hum or cleaning up a high-gain amp"³. ISP says it won't alter your tone, and that it is a full analog design without digital artifacts or aliasing¹.

One knob, no release control

The Deci-Mate has a single knob, and it controls the gate's threshold. MusicRadar described it plainly: "A single threshold knob controls the level of noise reduction"⁵. Guitar.com likewise noted that "the only knob to tinker with on this pedal affects the gate's threshold"³.

There is no release control, and that is deliberate. MusicRadar reported that "its algorithm aims to do away with any release control"⁵. Instead of a fixed release time you dial in, ISP specifies an adaptive release response over a 1000 to 1 ratio⁴, which the press coverage tied to tracking improvements over existing Decimators: "an adaptive response that can cope with staccato playing and sustained notes"⁵.

The circuit also adds what ISP calls Decimator X technology, which Premier Guitar's announcement said "uses time vector integration and eliminates any modulation of notes"¹. In practice, the claim is that the gate tracks the note's decay rather than cutting it off abruptly.

Analog design and true bypass

ISP and the launch coverage agree on the pedal's construction. Premier Guitar described the Deci-Mate as "a full analog design without any digital artifacts or aliasing"¹, MusicRadar called it "a fully analogue design with no digital artefacts or aliasing"⁵, and a later Pedal of the Day review of the G version repeated that "the all-analog design makes sure you won't alter your tone in the least"⁶. This is worth noting alongside the wider ISP range: the Decimator II G String, by contrast, is listed by the maker as a digital design⁷.

Bypass is true bypass on both the Deci-Mate and the Deci-Mate G, per ISP's product pages⁴⁸, and the launch coverage from Premier Guitar and MusicRadar described the same true bypass switching¹⁵.

Power and connections

The Deci-Mate runs on a 9V DC supply with a minimum of 40 milliamps, wired tip negative and sleeve positive⁴. No power supply is included with the pedal⁴. The pedal has a single 1/4 inch output⁴.

Deci-Mate versus the Decimator line

The Deci-Mate is a downsized version of ISP's established Decimator noise suppressor. MusicRadar reported that "ISP Technologies has downsized its popular Decimator noise suppressor into a mini-pedal format with the Deci-Mate"⁵, and Premier Guitar's announcement described "full implementation of ISP's world-renowned Decimator technology, and including new tracking improvements"¹.

The main practical difference for a player is footprint and control. The Deci-Mate trades the full-size pedals' connectivity for a micro enclosure and a single knob, while the G version of the Deci-Mate, the Deci-Mate G, adds a key feature: its noise reduction "directly tracks the guitar output," so the threshold needs no adjustment when switching between gain settings⁸.

Sources for the table: ISP product pages² and Gearnews pricing².

What reviewers said

Launch coverage was consistent about the pedal's purpose and design. MusicRadar's headline take was that ISP "looks to have pedalboard noise reduction nailed" with the mini format, noting the adaptive response and the absence of a release control as the design's distinguishing points⁵. Guitar.com framed it as the flagship Decimator circuit in a pedalboard-friendly box, suited to single-coil hum and high-gain amp cleanup³.

Two years on, Pedal of the Day reviewed the Deci-Mate G and highlighted the same strengths⁶:

Gearnews included the Deci-Mate in its 2026 noise gate buying guide at $139.00 USD, alongside the Deci-Mate G at $257.00 USD².

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