Mooer Prime S1

The Mooer Prime S1 is a compact multi-effects pedal that puts a whole rig in a stompbox-sized box: amp and cabinet models, effects, presets, a looper, drum grooves and a tuner, all running on a rechargeable battery. Mooer describes it as "a compact, all-in-one rig that's easy to carry, simple to use, and powerful enough for any situation"¹. Guitar World billed it at launch as one of the smallest and cheapest multi-FX pedals on the market².

It was announced on March 27, 2024 and sits in Mooer's Prime series alongside units like the Mooer Prime Minimax M1 and the MOOER Prime P2. Guitar Player's 2026 multi-effects buying guide placed it around the $150 mark³¹.

What the Prime S1 does

The pedal carries 126 onboard effects and tone presets, which Mooer says gives guitarists "a huge tonal library"¹. Its feature list includes 128 guitar effect and tone presets¹. Guitar Player's buying guide breaks the modeling down as 52 amp models with 25 cabinets, plus 51 effects³.

For practice and songwriting, the S1 bundles several tools:

• An 80-second looper with overdub and undo functions¹
• 40 synchronizable drum grooves¹
• 10 metronomes¹
• An internal digital tuner¹

Mooer says the looper "makes layering riffs easy," and the drum grooves can be synchronized with it¹. The whole package weighs 350g and measures 240mm deep by 70.2mm wide by 31.9mm high, dimensions Guitar World reported at launch⁴¹.

Footswitches, display and app control

On the surface, the S1 keeps things simple. Mooer's feature list specifies:

Mooer says the four responsive footswitches and bright LED display "keep control intuitive"¹.

Deep editing is another matter. Guitar World reported at launch that "There are no onboard parameters, so tone tweaking is taken off-pedal: the Prime S1 can be controlled by the Mooer Cloud" app, which dials in gains, modulations, delays, reverbs and more⁴. Everything is, in Mooer's words, "all editable, shareable, and expandable through the MOOER Cloud platform"¹. That means preset editing, sharing tones with other players and downloading new content all happen in the app rather than through menus on the pedal.

Power and connections

The S1 runs on a rechargeable lithium battery charged over USB-C, with up to 4.5 hours of playing time per charge¹. That battery operation is a big part of the pedal's appeal for players who want a rig that works anywhere without a power brick. On the connections side it has a mono ¼" input and stereo ¼" outputs¹, so it can feed two amps or a stereo PA from a single guitar input.

What reviewers said

Guitar Player's 2026 multi-effects buying guide included the Prime S1, describing it as "much more like a traditional multi-effects pedal" than some alternatives, at around $150³. The guide's criticisms were aimed at its amp modeling and build: it lists "Amp sims lack fidelity" and notes it is "not the sturdiest for taking on the road"³. For players weighing it against larger units in Mooer's range, such as the Mooer GE300 or the MOOER GE1000, those points are worth bearing in mind alongside the S1's size, battery and price.

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