Hollyland Solidcom C1 Pro-4S Full-Duplex ENC Wireless Intercom System with 4 Headsets (1.9 GHz)

The Hollyland Solidcom C1 Pro-4S is a true-wireless, full-duplex crew intercom system tailored for 4-person teams who require completely hands-free, zero-latency communication.

Operating on the license-free 1.9 GHz DECT 6.0 frequency band, this "Pro" variant upgrades Hollyland's headset line by adding advanced Environmental Noise Cancellation (ENC). It features a completely hubless system configuration—meaning the headsets sync directly to one another wirelessly, removing the need for a bulky, stationary base station hub and allowing for lightning-fast deployments in the field.

Core Audio & ENC Engineering

• Dual-Microphone Environmental Noise Cancellation (ENC): Built specifically for loud production spaces like live concerts, sporting events, or busy film sets. Each headset utilizes a primary directional vocal microphone on the boom arm alongside a secondary ambient mic built into the ear cup assembly. The internal chip actively suppresses up to 20dB of environmental background clutter, ensuring crystal-clear voice coordination.

• Hubless Master-Node Network Architecture: By eliminating a central desktop base station, the kit is highly portable and ready to deploy in seconds. One specific headset features a distinct red nameplate and acts as the master anchor node. The remaining 3 remote units (blue nameplates) connect directly to this master cell.

• Seamless Full-Duplex Real-Time Voice Rings: Functions like an open phone call rather than a traditional walkie-talkie. All 4 users can speak and listen simultaneously without pushing any buttons, keeping team communication natural and instant.

• Intuitive Smart-Mute Controls: Toggling the mic is entirely muscle-memory based. Swiveling the microphone boom arm upward past 30 degrees produces a physical click that mutes the line entirely. Pulling the boom arm back down below the jawline instantly reopens the channel.

Battery Architecture & Field Lifespan

Because the designated Master headset handles all signal routing for the remaining 3 remote units, its internal power draw curve is heavier:

Technical Specifications Matrix

What is Included in the Box

• 1 × Solidcom C1 Pro Master Headset (Red Accent Label)

• 3 × Solidcom C1 Pro Remote Headsets (Blue Accent Labels)

• 1 × 4-Slot Central Fleet Charging Station Base

• 8 × Rechargeable Lithium-Ion Battery Cells (Provides a full back-up set)

• 4 × Over-Ear Leather Acoustic Isolating Cushions

• 4 × On-Ear Foam Open-Air Cushions

• 4 × Microphone Windscreen Foams

• 1 × USB Type-A to USB Type-C Cable

• 1 × 12V DC External Power Adapter for the Charging Dock

• 1 × Hard-Shell Custom Waterproof Storage Case

💡 Future Team Scaling Potential: Because this 4S bundle runs via a hubless loop anchored by the Master headset, it can accommodate up to 4 additional remote headsets (up to an 8-person maximum ceiling) by registering them directly to the Master headset over a USB cable. If your production crew eventually grows past 8 users, you can buy a physical Solidcom C1 Pro Base Station Hub, which restructures the network into a dual-group matrix that can support up to 9 or 16 users simultaneously.