Rated 4.9 (149 reviews)
A complete 20-person silent disco system built on the W Audio SDPRO platform: 20 3-channel wireless headphones with RGB channel indication, two SDPROTX UHF transmitters for two simultaneous audio streams, and 1 SDPROMC 20-way charger – 20 charge ways, so the whole fleet charges in a single pass. A ready-to-run package for event hire companies, venues, schools and activity providers – and because the SDPRO system is 3-channel, you can add a third transmitter later for a three-stream battle.
20 users
CAPACITY · expandable, no receiver limit
2 included
AUDIO STREAMS · 3-channel system
8-10 hours
BATTERY LIFE · per headphone
863-865MHz
RF BAND · licence-free CH70
Licence-free UK operationThe whole system runs on 863-865MHz within Channel 70, licence-exempt in the UK – no Ofcom licence needed for events of any size. Transmitters reach up to 200m in low power mode and 400m+ in high power mode, and there is no limit to how many headphones each transmitter serves.
What’s in the package
Everything needed to run a 20-person event:
20 x SDPRO headphones
2 x SDPROTX transmitters
1 x SDPROMC 20-way charger
5 x 4-way charge looms
2 x 12V PSUs
Grow the system
The SDPRO platform scales with your events:
Add a 3rd transmitter for 3 streams
Unlimited extra headphones
Bluetooth beltpack transmitter available
Features
20 3-channel headphones with RGB LED channel indication
Two UHF transmitters running two simultaneous audio streams
Guests switch streams on the headphone; LEDs show the active channel
Full fleet on charge at once – 20 ways via 1 x 20-way charger
8-10 hour headphone battery life, 3 hour full charge
Stereo FM-modulated UHF transmission, unaffected by other RF in the room
Transmitters supplied in padded carry cases with PSUs
Custom logo branding on headphones available on request
NoteThe 1 20-way charger covers the whole fleet – all 20 headphones charge in a single 3-hour pass, ready for back-to-back events.
Specifications
| System | UHF RF, FM modulated, stereo, 3-channel |
| RF frequency | 863-865MHz (CH70, licence-free UK) |
| Simultaneous streams | 2 (expandable to 3 with an extra transmitter) |
| Transmitter range | Up to 200m (low power) / 400m+ (high power) |
| Headphone battery life | 8-10 hours (500mAh lithium-polymer, 3 hour charge) |
| Charging capacity | 20 ways (1 x 20-way charger, 5V 5A each) |
| Headphone audio | SNR >75dB, THD <1%, 30Hz-20kHz |
| Warranty | 1 year |
