Aeromix 3+5LS

The Aeromix 3+5 LS is the top-of-the-range voice-over-music stereo mixer from Fitness Audio. It's purpose-built for large multi-purpose fitness venues, full-service health clubs, university and corporate recreation centres, dance academies, group exercise mega-rooms, and any facility that needs to run multiple instructors and multiple music sources simultaneously. Compared to the 2+2 SR, it adds a third mic channel, two more music inputs, direct USB-to-computer streaming, a built-in adjustable sound limiter, and a dedicated Music-Only Monitor output.

Three mic channels — two XLR Combi inputs on the rear panel (for your installed wireless receivers) plus a front-panel TRS jack input for a third microphone. The front input is perfect for visiting guest instructors who bring their own wireless mic system: they walk up, plug into the front, turn up Mic Vol. 2, and they're teaching within seconds. No reconfiguring the back of the rack.

Five stereo music inputs in total. You get four pairs of RCA inputs on the rear (including the exclusive BGM input for background music) plus a ¼" TRS jack on the front panel that uses the included iJax cable for quick phone connection. This is enough for a primary playlist source, a backup player, a streaming device, a CD or USB player, and an instructor's personal phone — without ever swapping cables.

BGM stands for Background Music. It's a dedicated rear-panel input designed for a permanent background music source — typically a streaming box, satellite radio, or the building's overall music system — that plays at a set level when no class is running. Staff can fade it down when a class starts and bring it back up between sessions without affecting any of the other music channels' settings.

Yes — and this is one of the biggest upgrades over the 2+2 SR. The 3+5 LS has a built-in Analog-to-Digital Converter board and a USB Type B output, which means you plug a single USB cable directly into your computer and your full voice-over-music mix is recognized as a clean digital audio input. No external USB soundcards, no adaptors, no signal degradation. It's purpose-built for simultaneous Zoom, Teams, and on-demand recording while teaching a live class.

Absolutely. Combine the 3+5 LS with the Fitness Audio DX6 Digital Wireless package (dual-channel) and two instructors can both be mic'd up and broadcast through the same USB stream to a computer. Add a third instructor on the front-panel mic input and all three voices reach the room speakers and the Zoom audience simultaneously.

The 3+5 LS has an inbuilt Audio Slap limiting circuit that delivers a –15 dB cut to the music when sound levels exceed your set ceiling. There's a screw-pot Ceiling control on the unit to set the trigger point, and a red LED on the front panel that acts as a visual overload indicator so staff and instructors can see when they're pushing the system too hard. Unlike the 1+1 SR and 2+2 SR, you don't need a separate Trigger device — the limiting is built right in.

MOM stands for Music-Only Monitor — a dedicated output that sends only the music feed (no microphone) to a secondary destination. Common uses include: feeding a lobby or reception speaker system with just the class music (without the instructor cueing in your ears), sending music to a side-stage monitor for instructors who want to hear the mix without their own voice, or routing music to a separate zone like a stretching area adjacent to the studio.

Four TRS outputs total — one stereo pair at 1 Volt Left & Right, plus a Mono/Subwoofer option for sending a summed signal to a sub or a mono zone. Add the MOM output and the USB Type B output, and you have flexible routing for main speakers, subs, secondary zones, recording rigs, and live streaming all running at the same time.

Yes. The two rear-panel Combi inputs accept both ¼" TRS jack and balanced XLR from any quality wireless receiver — Shure, Sennheiser, Audio-Technica, Line 6, and others — alongside Fitness Audio's own DX6 Digital, U-Series UHF, and Aeromic-compatible systems. Balanced XLR connections from your wireless receiver's Mic Out reveal more body in the voice and are far less prone to noise and RF interference.

Two layers of protection. First, the recessed Master Volume Control on the rear panel sets a hard ceiling that front-panel knobs can't exceed. Second, the built-in Audio Slap limiter actively cuts the music –15 dB whenever your set sound level is breached. Together, this gives you compliance with workplace noise regulations, hearing protection for members, and far fewer complaints from neighbouring rooms or upstairs tenants.

Yes. The EVAC Link (Music Mute Relay) is standard on the 3+5 LS and is often required by building codes for public institutions, universities, council facilities, schools, and large commercial premises. If the fire alarm triggers, music is automatically muted across the system while the instructor's microphone stays live at full volume — so they can clearly direct an orderly evacuation.

Yes — it's a 1 Rack Unit (1RU) design and fits cleanly into standard 19" racks. It mounts alongside your wireless receivers, AeroLink Bluetooth receivers, amplifiers, and signal processors to keep the whole rack tidy in one cabinet.

There's no built-in Bluetooth, but it pairs perfectly with the AeroLink Bluetooth Music Receiver — plug AeroLink into any of the rear RCA music inputs and you can stream wirelessly from a phone, tablet, or laptop while still getting the rock-solid audio quality of a wired connection through the mixer.

Very easy. The front panel has both a ¼" TRS mic input (Mic 2) and a ¼" TRS music input that uses the included iJax cable. A visiting instructor with their own wireless system can plug their receiver into the front mic jack, plug their phone into the front music jack, turn up the corresponding channels, and start their class without ever touching the back of the rack.

Yes. The 3+5 LS runs on a 24V outboard DC power supply — the quietest in any fitness mixer on the market. No buzz, no hiss, no power hum during quiet stretching, breathwork, savasana, or end-of-class cool-down moments where every little artifact gets noticed.

Yes. Each of the three mic channels has its own bass and treble (EQ) controls, fully independent from the music EQ. If one instructor's mic is muddy or feeding back, you can shape just that channel without affecting any of the other voices or the music — which is essential when you've got three different vocal tones running through the system at once.

Yes. Heavy-duty knobs and pots are used throughout for rust prevention, and the chassis is built for the heat, humidity, and constant operation of a working facility. The 3+5 LS has been engineered and QC'd by Fitness Audio specifically for the fitness industry — it's not a generic recording-studio mixer adapted for gyms.

No. Once your installer commissions the system — setting master volume, sound limiter ceiling, mic trims, and EQ — daily operation is straightforward. Instructors only need to manage mic and music levels during class. The set-and-forget design philosophy means even a flagship mixer with this many channels stays simple to use, and it's easy to reset on the fly if something gets bumped.

The Aeromix 3+5 LS mixer, a 24V outboard DC power supply, and our exclusive iJax smartphone connection cable. The data sheet and full user manual are available for download on the product page. A rack mount kit is sold separately if needed.

The 2+2 SR is the industry standard for typical group fitness rooms and indoor cycling studios with one or two instructors. The 3+5 LS adds a third mic channel, two extra music inputs, a built-in sound limiter (no external Trigger required), direct USB-to-computer connectivity, and the MOM output. Choose the 3+5 LS when you run hybrid classes regularly, need to handle guest instructors with their own gear, route audio to multiple zones, or operate a large multi-purpose facility.

The 1+1 SR is the entry point — one mic, two music sources, ideal for boutique studios, solo-instructor spaces, yoga and Pilates rooms, and home setups. The 3+5 LS is the top of the range: three mics, five music sources, built-in sound limiting, direct USB streaming, and routing for multiple zones. The two products serve completely different scales of facility.

Yes — it's purpose-built for it. The direct USB Type B output sends a clean digital voice-over-music mix straight into your recording or streaming software (OBS, Zoom, Teams, Riverside, etc.), and the MOM output lets you simultaneously feed a separate music monitor or zone. Facilities producing content for their member apps or YouTube channels get a huge workflow upgrade over rigging up external soundcards.

Get in touch through the contact page and we'll connect you with your local Fitness Audio distribution partner. We'll help you decide between the 1+1 SR, 2+2 SR, and 3+5 LS based on your room size, number of instructors, class formats, streaming needs, and budget — and we can recommend the right mics, transmitters, receiver, and receiver to complete the system.