PRIME OPTIMA+ TOUR GUIDE SYSTEM SET – 80 RECEIVERS
FOUR GROUPS, ONE OPERATION UNDER CONTROL
4 transmitters and 80 receivers organised across two 36-device charging cases — the scale tour operators need for large departures and multiple guides working simultaneously.
- 4 transmitters
- 4 lapel microphones
- 80 receivers
- 80 reusable mono earpieces
- 2 charging cases for 36 devices
- Gift CS carrier bag!
- Stock available in Europe
- No EU import costs
- Order prepared within 24 hours after payment
- 2-year warranty
- International shipping
- Secure payments
THE SAME RELIABILITY, MULTIPLIED BY FOUR
Designed for high-volume, regular operations: shore excursions with multiple buses, cruise terminals, trade shows with different routes or corporate events with simultaneous rooms. Four independent transmitters allow each guide to operate their own group without manual frequency coordination.
Each device provides a stable 150-metre range and 100 hours of continuous battery life.
CS.Counter app: count your equipment in seconds
Less equipment loss and less time spent counting devices at the end of every tour.
CS.Tap&Connect: one-tap synchronisation
Pair transmitters and receivers with a single tap, even in large groups.
150-metre range with a stable signal
With noise-reduction technology, guides can move freely without losing signal or sound quality.
100 hours of battery life with fast charging
A full day of operation without recharging. Long-lasting battery with fast charging in 2 hours.
EVERYTHING YOU NEED TO OPERATE YOUR NEXT TOUR
- 4 × PRIME DRT-210 transmitter
- 4 × CSMIC002 lapel microphone
- 80 × PRIME DRR-210 receivers
- 80 × CS001RB reusable mono earpieces
- 2 × CS 36 charging case (36 devices)
- 1 × CS carrying bag, size L — included at no extra cost
THEY TRUST US















THEY TRUST US















THEY TRUST US















CHOSEN BY PROFESSIONALS AROUND THE WORLD
Our technology speaks for itself, but our customers are the ones who can best explain what it’s like to work with Crystal Sound. Discover why professionals around the world choose us.








European manufacturer, no intermediaries
We design and manufacture our own tour guide systems, without relying on third parties for stock, parts or support.
Present in more than 50 countries
More than 7,500 tour operators and 300 museums already manage their groups with Crystal Sound equipment.
Stock and support in Spain
With fast shipping and professional logistics, your equipment reaches you wherever you are.
Transparent volume-based pricing
You will never pay more for ordering a ready-made tour guide system set than for a custom quote.
Recognised as Wireless Tour Guide System of the Year in Europe 2025
Our technology adds value to communication during guided tours, ensuring a better visitor experience in museums and outdoor excursions, regardless of group size or surrounding noise.
Official 2-year
warranty
Includes after-sales service with remote support and training sessions, so your team can operate the equipment with complete peace of mind.
FREQUENTLY ASKED QUESTIONS
WHAT TOUR OPERATORS
ASK US
Yes. With 4 transmitters and 80 receivers distributed across two charging cases, you can assign dedicated equipment to each bus or subgroup and manage each group independently from disembarkation to return.
You can expand the same tour guide system set with individual receivers or transmitters. The Prime tour guide system is compatible with existing Crystal Sound equipment, so there is no need to replace your entire fleet.
LET YOUR STORIES BE HEARD!
We help you identify the guided-tour system solution that best fits your business needs.
Email address
hello@crystalsound.eu