GUIDE
Renting interpretation headsets: when is it necessary, and what is the alternative?
In three sentences
- Classic rental has three lines: receivers/headsets (one per attendee), transmitters and booths (per language), and a field crew for distribution, collection and counting; the invoice grows with attendee count.
- With QR listening on the attendee's own phone there is no equipment line: cost scales with speaking hours × target languages and audience size does not enter the invoice.
- Headset rental still makes sense in three cases: an audience without phones, halls where devices are banned, and venues whose connectivity cannot be fixed — the decision is made at rehearsal, in the real hall.
When planning a multilingual event, the first call usually goes to the equipment rental company: headsets, receivers, transmitters, booths. This guide covers the question to ask before making that call: does this event really need rented headsets, or does the phone in the attendee's pocket do the same job? We describe both setups honestly, line by line.
What classic rental consists of
In a booth setup the rental list is predictable: a booth and transmitter per language, a receiver and headset per attendee, spare batteries and charging stations, a distribution desk. Equipment never comes alone: a field crew is needed for setup, signal testing, distribution, collection and counting. For a two-day congress with five hundred attendees the receiver/headset line alone is a serious budget item, and lost-device fees are written into the contract separately.
Hidden costs: logistics and loss
Headset cost is not only the rental fee. The distribution queue slows down registration; taking an ID or card as deposit hurts the attendee experience; collection and counting at the end of the day burn staff hours; every lost receiver lands on the invoice. At a multi-hall event this logistics is multiplied by the number of halls.
The alternative: the attendee's own phone
With QR listening the attendee scans the code on the poster, picks a language in the browser and listens with their own earphones; nothing is installed, nothing is distributed. Audio comes from one broadcast per target language; live captions arrive in the same broadcast. Fifty or five thousand listeners change nothing about the logistics — the poster is the same poster. See the guide "How AI simultaneous interpretation works" for the full flow.
Two honest requirements of the phone setup
This setup has real preconditions. First, connectivity: the hall's cellular coverage or Wi-Fi capacity must carry the audience; this is measured at rehearsal with real phones. Second, batteries and earphones: since attendees use their own devices, a "bring your earphones" note in the invitation and a few charging points in the hall are good practice. Listening continues with the screen locked; battery use is close to normal music listening.
When renting headsets is still right
Classic rental is defensible in three cases: when the audience profile is phone-free or phones are unwanted (some diplomatic and high-security meetings), when devices are banned in the hall, and when the venue's connectivity cannot be fixed at rehearsal. Also, in a mixed setup with human interpreters, if the main language pair is delivered from the booth to headsets, renting receivers for that language is natural; the other languages can stay on phones.
The hybrid answer: a small backup pool
The two setups do not exclude each other. A common practice is keeping 10–20 simple devices with headsets in reserve for attendees who have no phone or prefer not to use one; the main audience listens via QR. Accessibility is preserved, and instead of renting five hundred receivers you carry twenty backup devices.
Decision checklist
Answer five questions before rehearsal: do attendees have phones and earphones; does the venue's connectivity carry the load (measured at rehearsal); is there a device ban or protocol requirement; how many languages and halls are there (headset logistics multiplies, phone logistics does not); does the budget show lost-device and field-crew lines? If the answers mostly favour phones, treat headset rental as a backup only.
Frequently asked
- What if an attendee forgets their earphones?
- Listening quietly on the phone speaker is possible but not polite in a hall; the small backup device pool exists for this case.
- Does it work if the hall has no Wi-Fi?
- The attendee side works over cellular data; coverage is measured at rehearsal. The sending side needs stable internet and a backup connection.
- Can the wrong-channel problem of headsets happen here?
- No; attendees pick the language on screen themselves and can change it at any moment. The "headset stuck on the wrong channel" problem does not exist in this setup.
- Do I pay more if more listeners show up?
- Interpretation cost scales with speaking hours × target languages; audience size does not change the invoice while it stays within the plan capacity.
- Where do I see the price of this setup?
- Plans and current tax-inclusive prices are published on the plans page.
Instead of reading, listen: a live demo with your own voice.
Start a short live demo with a few details and microphone permission; see the delay, audio and captions on your own phone.
Last updated: 2026-08-20. This guide describes real product behaviour; figures follow our realism principle.