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Dorchester Center, MA 02124
Unlike guitarists, who spend their lives tinkering with pedals, saxophone players build their tone through technique and years of practice. Yet the moment you step on stage, that hard-earned sound gets handed over to the sound engineer. Want a touch less low end? A different reverb? The guitarist taps a footswitch and moves on — you’re stuck miming EQ curves at the booth, hoping the engineer speaks your sign language.
Think about that for a second: you’ve done everything to prepare the best performance you can, and at the final step, how your sound actually reaches the audience is out of your hands.
The EverSync SP-10 + SonoFlex combo exists to fix exactly this: putting control of your sound back where it belongs — with you, on stage.

The SP-10 receiver is built like a guitar pedal. It sits at your feet, so even with both hands busy playing and turning pages, you can trigger everything with a stomp.
Soloing over a quiet passage, you’re fine. But on an uptempo tune with the whole band at full volume? Relying on “just play harder” can throw off your playing right when it matters most.
That’s where the boost at your feet saves the day: +6dB by default, up to +9dB. Stomp it as the solo starts and you rise clear out of the wall of sound. Because it’s foot-operated, your hands never leave the horn — your playing is completely unaffected.

Many sax players think EQ is the engineer’s job, nothing to do with them.
But consider this: the tone you shaped through years of practice gets repainted by the room the moment it comes out of the PA. A space with poor absorption turns excess low end into mud; highs pushed too bright turn shrill and piercing. What comes back through the speakers is often noticeably different from what you actually played.
The SP-10’s EQ gives you quick ways to rescue your tone: leave it flat when the room behaves, or hit low-cut when things get boomy and muffled — the sound cleans up instantly, and you cut down the chance of feedback while you’re at it.
And if you know your way around an EQ, the advanced six-band mode lets you carve out a sound with your own personality.
The SP-10 has three built-in reverbs. The transmitter also carries a dedicated reverb blend knob, so if you want more or less ambience mid-performance, a small twist does it — wirelessly, from wherever you’re standing, no need to stay glued to one spot.
Batman needs Robin. However good the SP-10 is, it needs an input source to work with. It accepts microphones and pickups from other brands, but it pairs seamlessly with the SonoFlex. If you’re not familiar with it yet, here’s what defines this microphone:

SAX is the UK’s leading saxophone specialist, with the biggest YouTube channel of any saxophone retailer worldwide. They recently published a full hands-on review that has gathered close to 15,000 views, and their conclusion was direct: for gigging saxophonists, this is a game changer.
What impressed them most was the boost design — sax players can finally do something about their own sound on stage, the way guitarists always have, instead of passively waiting on the booth. On the microphone side, they praised the cardioid pattern’s rejection of ambient noise, the solid feel of the gooseneck, and the approachable price.
Worth noting: they didn’t only say nice things. They raised two honest caveats — first, 2.4GHz systems can interfere with each other in venues where many units run at once (Cloudvocal rates it at 8 simultaneous sets; they recommend testing at your actual venue), and second, reception in an empty room can differ from a packed one. The full video is below so you can judge for yourself.
Going wireless is only the starting point. What the SonoFlex + SP-10 combo really delivers is ownership of your live sound from capture onward: whether your solo cuts through, how much reverb you sit in, how your tone gets shaped — all under your control. Without piling on gear, you can make sure no unfamiliar venue, console, or crew decides how you sound.
Unlike ISOLO — an all-in-one that folds several devices into a single unit — the SP-10 focuses on performance sound control. The two philosophies lead to different designs and feature sets, summarized below:
| Comparison | ISOLO | EverSync SP-10 + SonoFlex |
|---|---|---|
| Works with other brands’ instrument mics | ✗ No. Microphone and transmitter are an integrated design and cannot be separated. | ✓ Yes. The transmitter connects to other brands’ mics via adapter cables, and also accepts pickups. |
| Wireless generation and latency | First-generation 2.4GHz, ~10ms latency; sync cables recommended when running multiple units. | Second-generation 2.4GHz, 6.6ms latency; no sync cable needed for multiple units. |
| Interference resistance | Moderate. Earlier frequency-hopping design; dense, strong interference can affect reception. | High. New-generation frequency hopping built for today’s crowded 2.4GHz environments. |
| Receiver EQ | Low and high adjustment. | Low-cut, high-cut, plus advanced six-band myEQ. |
| Backing-track input | ✓ Via 3.5mm audio cable. | ✗ Not supported. |
| Battery life | ~4 hours. | ~10 hours. |
| Receiver power | 7–9V DC. | Standard 9V DC or USB-C. |
| Effects and control | Prime: 8 effects Lite: 4 effects Manual Blend knob | Three effects Remote adjustment via bodypack knob |
| Outputs and footswitch | 6.3mm output; balanced out via adapter cable. No footswitch. | 6.3mm TS output, XLR balanced output. Footswitch doubles as boost and mute. |
GET THE PAIR · SP-10 + SonoFlex Bundle
Take them home together.
Still unsure about compatibility with your instrument or connectors? Contact us with your instrument model or a photo of your connector and we’ll help you confirm.
With tone control at your feet, the rest of your live setup deserves the same attention. For the complete picture, see our Saxophone Live Sound Guide.