The MOOER Blue Comp is an analog compressor pedal in a micro-sized enclosure, built for players who want compression on a crowded board without giving up much space. RockBoard's PedalPedia describes it as a "legendary optical compressor, incredible smooth sound", and it offers two working modes, Normal and Treble, for two shades of sustain1. MusicRadar's reviewer Trevor Curwen found it "fully capable of dishing up some very effective compression", and noted that its micro size makes it "ideal for smaller 'boards"2.
What it does and how it is controlled
The Blue Comp is a compressor, the effect type that evens out the difference between quiet and loud notes, stretching sustain and smoothing a part's dynamics. If you are new to the category, the Compressor Pedals page covers how these circuits work and where they sit in a signal chain.
The pedal's two modes shape which part of the signal gets the most sustain1:
| Mode | What MOOER says it does |
|---|---|
| Normal | "Normal sustain of low noise, long sustain is obtained"1 |
| Treble | "Sustain of high frequency is emphasized"1 |
Beyond the mode switch, MusicRadar's review highlights the Attack control: "With the Attack control offering useful tailoring of the 'nose' of each note", meaning you can set how much of the picking transient comes through before the compression clamps down2.
Where it came from
Mooer is a Chinese pedal maker, and Curwen's review places the Blue Comp in that context: the company "offers a range of Chinese-made, (relatively) inexpensive pedals", and "Many are obviously 'inspired' by old favourites, and this Blue Comp apes features from the Boss compressor"2. In other words, it is Mooer's compact take on the Boss style of compression rather than a new circuit design.
What reviewers said
MusicRadar's verdict is straightforward. As Curwen put it:
"The Blue Comp pedal provides versatile compression in a tiny footprint."
Trevor Curwen, MusicRadar2
The review's summary of the pedal's strengths: compact size, two modes for different sounds, and an effective attack control, with nothing in the review to avoid2.
The Blue Comp runs on 9V DC center negative and draws only 10mA1, so it sits easily on any standard pedalboard supply.
Videos
MOOER Audio
musicexpresscanada
Questions
Is the MOOER Blue Comp true bypass?
Yes. MOOER lists the Blue Comp as true bypass, so when the pedal is off your guitar's signal passes through without the compression circuit loading it. That matters on a pedalboard where the compressor may sit early in the chain and stay off for long stretches of a set.
What power supply does the MOOER Blue Comp need?
The Blue Comp runs on 9V DC with a center negative plug, the standard pedalboard supply, and draws 10mA. That low draw means it can share a daisy-chained supply with other standard pedals without straining the supply's current budget.
Is the MOOER Blue Comp analog or digital?
The Blue Comp is an analog pedal. MOOER describes it as a legendary optical compressor with an incredibly smooth sound, and the analog circuit is housed in a full metal shell in a micro-sized enclosure.
Which compressor is the MOOER Blue Comp based on?
MusicRadar's reviewer Trevor Curwen noted that many of Mooer's pedals are inspired by old favourites, and that the Blue Comp apes features from the Boss compressor. It is Mooer's own compact take on that style of compression, not a copy of a specific Boss model.
Where is the MOOER Blue Comp made?
The Blue Comp is made in China. MusicRadar's Trevor Curwen described Mooer as offering a range of Chinese-made, relatively inexpensive pedals, of which the Blue Comp is one.
Sources (2)
- Blue Comp by MOOER, RockBoard (rockboard.de PedalPedia), 2026
- Mooer Blue Comp review, MusicRadar, 2013-01-30
