Live sound · Band ops
The IEM Rig Guide
Three ways for your band to run IEM's (in-ear monitors), from "let front of house deal with it" through to "we bring our own monitor engineer". The higher up you go, the more control and consistency you get. Pick whichever matches where you're at, and what you can afford to carry and pay for.
First, a note on drummers. Whatever tier you're on, stick the drummer on a wired pack. They sit still all night and they're usually sat right next to the IEM/playback rack anyway, so wireless usually isn't worth the hassle. Every wireless pack you drop is one less frequency to manage, and RF co-ordination can be a shitshow. Copper is king!
A Behringer P2 on the drummer's belt handles volume control.
Second, keep some wedges. Think of IEM's as support for your monitoring, not a total replacement. Even with the whole band on ears, it's worth running a basic reference mix in the wedges. Not a player-specific mix, just the band coming back at the stage. It puts some energy back onto the stage and gives you a fallback if a pack dies. Big productions do a similar job with sidefills... PA-size speakers at the sides to reinforce the sound on stage.
With that out of the way... let's get down to business.
FOH Mixes Your Ears
All transmitters in a rack. Done.
The simplest way to do it. You carry a small rack with your transmitters in it and that's basically all you need. Everything on stage goes to the FOH engineer like normal, they do a monitor mix for each of you and send those back to your rack. Your transmitters just broadcast whatever FOH sends them.
How the signal flows
Tier 1: everything through FOH, mixes come back to your rack
This is a fresh monitor mix for every show. The FOH engineer on the night would be sending wedge mixes anyway. The only real difference is those mixes route to your rack instead of the wedges on the floor. Very little changes for anyone, other than patching in your transmitters.
What to buy
LD Systems MEI1000: what I'd recommend at this level. It's the middle ground of affordable but actually not terrible. Most cheap, generic off-brand IEM systems are rubbish. These aren't. The belt-packs/receivers can be a bit fragile, though.
Sennheiser EW IEM G4: the level above. If you can stretch to it, do it. These are a substantially more "pro" setup and you won't outgrow them moving up the tiers.
Good
- Cheapest and simplest way to get IEMs on stage
- Almost nothing changes in your setup
- Minimal extra gear to lug around or look after
Trade-off
- The quality of the mix depends entirely on whoever's behind the FOH desk that night
- A fresh monitor mix has to be dialled in every show, which takes time
You Own the Mix
Analog splits at the stage, your own monitor mixer in the rack.
This is where you mix your own IEMs. Your rack now holds all your transmitters plus a small digital mixer. You build your mixes in rehearsal and they get sent to your transmitters.
The whole thing runs on analog splits (see note about "digital splits" below) at the stage. The band run all their own inputs (vocals, bass, guitars, tracks... but not drums) into splitters first. I use the ART XLR splitters. One fork goes into your mixer, the other becomes a bundle of "tails" (a bunch of XLR's, usually a multi-core) you hand to FOH that carry your signals from the other side of your splits. Both you and FOH get the same signals to mix how you wish.
The one thing that usually isn't worth splitting is the drums, since they're usually mic'd up by the venue or FOH, and can be as many as 16 inputs. I recommend you ask FOH to send you back a mono mix of the drums, which lands in your mixer as one channel and slots into the mixes you've already sorted in rehearsal. Just ask your the FOH engineer to send you a general drum mix, and ask them to turn it up or down at their end to sit well with your other instruments.
How the signal flows
Tier 2: split everything at the stage, FOH sends back one mono drum mix
The catch: consistency is everything
Your mixes are built in rehearsal, so they only sound right if what's feeding them is identical every night. This is the point where you have to get strict about your hardware:
- Be specific about mics. Same mic = same gain every show, so what hits your mixer never changes.
- Keep mic placement on guitar cabs consistent, or dodge the problem entirely with DIs or amp modellers.
- Treat your input list as locked. If something changes, change it in rehearsal first so you can re-balance the mixes. (and remember to update your tech spec! Learn how to write a tech spec here)
What to buy
Behringer X-Air XR18: the budget pick. 16 preamps and enough aux buses for a small band's mixes, all controlled from a tablet. Does everything an IEM rack needs.
Behringer X32 Rack: the step up. More channels and buses, and it's everywhere in the live world, so borrowing spares and finding people who know it is easy.
ART XLR splitters for the stage split. They're 8-channel, so you need as many as it takes to cover your input list (minus the drums, which stay with FOH). And optionally, your own mics if you want to be consistent (see above: same mic, same gain, every night).
Good
- Your mix is yours, dialled in at rehearsal, the same every night
- No longer at the mercy of the venue engineer
- Small digital mixers are becoming cheap and portable
Trade-off
- More gear to carry, patch, and maintain
- You have to stay strict: same mics, same gain, same placement, every show
- Still relying on FOH for that drum mix
Digital splits are a thing. In the world of big productions, both the monitor and FOH consoles are often networked together and one of the consoles "owns" the mic preamps and gain, the other just receives the digital audio streams. This is the "correct" path if you have a full console/hardware package and the proper co-ordination between engineers. In reality, if you're running your own IEM's you won't have that luxury, so analog splits are the only way to guarantee your setup will work everywhere, every time.
Your Own Monitor Engineer
Run it like a touring-scale production.
The top tier. You bring your own monitor engineer and they handle everything. A full console sits at side-stage, every input on stage goes there first, and a proper mix gets done for each of you at every show by someone who knows your songs and knows what you like in your ears.
The stage split still exists, it's just your engineer's problem now. Inputs hit the split, one side feeds the monitor console, the other feeds FOH. Funnily enough, this tier arguably needs less hardware from the band, because you've now got "a guy with the gear" who owns the splits, the console, the transmitters, the RF co-ordination... all of it.
How the signal flows
Tier 3: everything hits the monitor world first, FOH gets its own split
What to buy
Nothing. At this tier the hardware usually isn't your problem any more. You (or your engineer) will be liaising with the venue, production company, rental house, or touring party to supply the gear you need for the run. Your job is knowing your input list and your mixes.
Good
- The best your ears will ever have it, with someone actively mixing for you all night
- The band carries the least gear of any tier
- Problems get fixed mid-song instead of after the show
Trade-off
- Another crew member on the payroll, and the bus
- The console and hardware that person needs
- Overkill until the gigs (and the money) justify it
Which Tier Are You?
| Tier | Who mixes your ears | You carry | Depends on FOH for |
|---|---|---|---|
| 1: FOH mixes | The venue / FOH engineer, every show | IEM rack (transmitters only) | Everything |
| 2: You mix | You, pre-built in rehearsal | IEM rack + Digital mixer + splitters + your own mics | One mono drum mix |
| 3: Mon engineer | Your engineer, live, every show | Almost nothing, your crew handles it | Nothing |
Rough rule of thumb: start at Tier 1 with gear that's good enough to keep (the G4s if you can stretch). Move up to Tier 2 when you rely on your monitors and bad mixes start costing you performances. Go to Tier 3 when the budget can afford another crew member, at which point you actually get to carry less gear than you did at Tier 2.
Pitfalls and Concepts
The stuff that'll leave you up shits creek without a paddle.
AN IMPORTANT NOTE ON VOLUME.
If you think your pack isn't working... DO NOT TURN IT UP FULL VOLUME. It can send high-volume noise directly into your ears and cause permanent damage.
If you have no audio when you think you should...Take your in-ears out of your ears first... check the batteries, check the transmitter is on and not muted, check the frequency isn't colliding with someone else's, and check the mix is actually being sent to your transmitter (almost all have a level meter on the front). If all else fails, turn it down and get an engineer to sort it out.
In general, always start with the volume low and increase gradually to a comfortable level. Your receiver/belt-pack should be on the minimum volume you need, with a healthy level on the transmitter.
Sharing transmitters and mixes
Not every player needs their own individual mix, so not every player needs their own transmitter. The rule: one transmitter per mix and one belt pack per player who wants in-ears. Any number of belt packs/receivers can tune into the same transmitter.
If you have 3 players and all are happy with the same mix, that's 1 transmitter and 3 belt packs, all on the same frequency. Ask who actually needs their own mix... vocalists usually do, but a shared "band mix" often covers everyone else. Every transmitter you buy is money spent and a frequency to manage. You can often buy a dual transmitter in a single unit that can send 2 mixes on 2 frequencies, which is a good compromise if you have 4 players and only 2 mixes.
Mono vs stereo
Honestly, just stick with mono. Nearly every input on stage is a mono source, and engineers effectively mix in mono anyway. Even with left/right mains, FOH keeps panning minimal because most of the audience isn't stood in the stereo sweet spot.
1 Stereo mix takes up 2 outputs from your mixer or monitor console, meaning that most budget friendly options can't support enough stereo mixes for a full band.
If you're working in Tier 3 territory, stereo will likely be where you are working anyway. If you're in Tier 1 or 2, always work in mono... less hassle, less gear, less cables, more mixes.
UHF vs 2.4GHz systems
UHF (Ultra High Frequency) is the traditional standard for wireless audio systems. It's the same system that TV and radio broadcasts use.
2.4/5GHz is a digital transmission standard, the same as Wi-Fi and Bluetooth.
UHF has been around for decades and is well understood. Digital 2.4GHz systems are newer and cheaper, but have some trade-offs.
Budget IEM systems (Xvive U4, LEKATO MS-2, and their many clones) now run on 2.4GHz instead of UHF. They are marketed as licence-free worldwide, cheap, with "digital" buzzwords, and only around 5ms latency on the decent units.
The problem is congestion. 2.4GHz is shared with Wi-Fi, Bluetooth and every phone in the room. Human bodies also absorb 2.4GHz energy. An empty room at soundcheck is the best-case environment for 2.4GHz... a full room is the worst. What worked perfectly at soundcheck can fail completely at showtime.
UHF costs more and can get messy with the co-ordination and licensing issues below, but it penetrates bodies and walls and performs the same in a full room as an empty one. You can get 5.8GHz systems (Xvive U45) to avoid the worst of the congestion, but these are still subject to interference and have shorter range/less penetration than UHF.
UHF
- Decades-old standard, predictable and well understood
- Penetrates bodies and walls: performs the same in a full room as an empty one
- Effectively zero latency on analog systems
- More expensive
- Needs proper frequency co-ordination
- Band legality varies by country, licence sometimes required
Digital
- Cheap and licence-free worldwide (2.4/5.8GHz)
- Zero configuration, no frequency planning
- Around 5ms latency on the decent units
- Shares spectrum with every Wi-Fi and Bluetooth device in the building
- Range and reliability drop as the crowd fills the room
- Fails at showtime, not soundcheck
RF co-ordination
Every transmitter needs its own clean frequency, properly spaced. Your IEM's, wireless mics, the support band's IEM's and mics... Spacing them properly isn't enough on its own. Transmitters generate intermodulation products, phantom signals on new frequencies that can interfere on a channel that appears to be clear.
The only real test is to power on every transmitter (run a scan with the full rig live, if you have the software and know-how), and write the plan/frequencies down, then check what the venue and other bands are running. One person owns the plan. At pro touring level this is a full-time job: larger productions carry a dedicated RF tech who does nothing but frequency management... that's how much of a pain it is. If you don't have a dedicated RF tech, the next best thing is to keep your own frequency list in your tech spec and stick to it. If you have a problem on the night, you can check the plan and see if someone else is running on your frequencies.
RF collision
Two transmitters on the same or adjacent frequencies collide. The stronger signal wins; the loser gets dropouts, full-volume bursts of static, or someone else's audio in their ears. This is the reason many packs have limiters: a collision can send high-volume noise directly into your ears.
Legality
UHF spectrum is licensed per country and the legal slices are narrow. In the UK: Channel 70 (863-865MHz) is licence-free and fits about four systems. Channel 38 (606.5-613.5MHz) is the shared touring band and needs an Ofcom licence, about £75 a year, the cheapest part of your rig. Ofcom deregulated 821.5-832MHz and 1785-1805MHz at the start of 2026, so the licence-free options are improving.
The sweet spot for licence-free UHF is the 823-832MHz plus 863-865MHz combination, usable across the UK and most of Europe. That's what current licence-free systems like the MEI 1000 G2 from Tier 1 run on. Buy gear that states these bands (or Channel 38 for licensed use) with the frequency range printed on it, and avoid the generic cheap Chinese systems: if a listing doesn't state its band, assume it isn't legal here. Imported kit is the usual offence. US-band gear can sit in spectrum sold off to UK mobile networks, and an in-ears rig that's legal at home can be illegal in other parts of the world. Penalty in the UK: up to £5000 and confiscated equipment.
Batteries
Going wireless means buying more AA batteries than you have ever seen in one place in your life. Two per pack per show, plus mics, plus spares, and battery meters are optimistic at best. Buy good rechargeables (Eneloop Pro or similar) and a proper charger, keep a brick of alkalines in the case as backup, and accept that you now own a battery organiser.