LEA Professional CS704D – 4-Channel 2800W Networked Dante Amplifier
LEA Professional CS704D – 4-Channel 2800W Networked Dante Amplifier is backordered and will ship as soon as it is back in stock.
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LEA Professional CS704D – 4-Channel 2800W Networked Dante Amplifier
Product Overview
The LEA Professional CS704D is a 4-channel, 2800W Class-D commercial-grade rack-mount amplifier with integrated Dante networking, built-in DSP, and IoT-enabled remote management. Designed for demanding fixed installations where high output, flexible signal routing, and network control are required, the CS704D delivers 700W per channel across a wide range of load impedances including 2, 4, and 8 ohm, as well as 25V, 70V, and 100V Hi-Z distributed audio systems. As part of LEA Professional's ConnectSeries, this amplifier is purpose-built for system integrators managing multi-zone commercial AV deployments from a single browser-based interface.
Product Description
The CS704D operates on LEA's proprietary Smart Power Bridge Technology, which enables bridged output mode without sacrificing a dedicated amplifier channel — a significant advantage in installations where channel count matters. Each channel is independently configurable for either Low-Z (2, 4, or 8 ohm) or Hi-Z (70V or 100V) operation, giving integrators the flexibility to drive both direct-impedance loudspeakers and distributed ceiling speaker circuits from the same rack unit.
Signal processing is handled by an Analog Devices Sigma 96kHz DSP processor with a 32-bit core and onboard sample rate converters. Network audio is delivered via dual Dante ports (primary and secondary) supporting AES67, while control and monitoring connect over a 100 Mbps Ethernet port or the unit's built-in Wi-Fi (access-point and client modes). The LEA Cloud platform provides remote firmware updates, real-time monitoring, and parameter control without requiring on-site service calls. Cooling is front-to-rear variable-speed fan with automatic thermal management, and the unit occupies a single rack unit (1U) at standard 19-inch width.
| Specification | Value |
|---|---|
| Channels | 4 |
| Power Output per Channel | 700W |
| Total Output Power | 2800W |
| Load Impedance (Low-Z) | 2, 4, or 8 ohm (per channel) |
| Load Impedance (Hi-Z) | 25V, 70V, or 100V (per channel) |
| Network Audio | Dante / AES67 (dual ports) |
| Ethernet Control | 100 Mbps Ethernet |
| Wi-Fi | Built-in (AP + Client mode) |
| DSP | Analog Devices Sigma, 96kHz, 32-bit core |
| Amplifier Class | Class D |
| Rack Format | 1U, 19-inch rack-mount |
| Dimensions | 14.25" x 19" x 1U (362 x 482 mm) |
| Weight | 14 lbs / 6.35 kg |
| AC Input | 100–240 VAC, 50/60 Hz |
Key Features
- 700W per channel, 4 channels — 2800W total output for high-headroom commercial installations.
- Dante / AES67 dual-port networking — Primary and secondary Dante ports for redundant networked audio with AES67 interoperability.
- Per-channel Lo-Z / Hi-Z switching — Each channel independently selectable for 2/4/8 ohm or 25/70/100V distributed audio operation.
- Smart Power Bridge Technology — Enables bridged mono output without losing an amplifier channel.
- Analog Devices Sigma DSP, 96kHz/32-bit — Onboard processing with EQ, crossovers, delay, limiting, and routing.
- Triple connectivity — Dante, 100 Mbps Ethernet, and built-in Wi-Fi (AP + client) for maximum deployment flexibility.
- LEA Cloud IoT management — Browser-based remote monitoring, control, and firmware updates with no on-site access required.
- 1U rack-mount, universal AC input — Compact form factor with 100–240 VAC compatibility for global installations.
Typical Applications
- House of worship
- Boardroom and executive conference room
- Commercial meeting space and multi-purpose room
- All-hands room and training room
- Government and institutional space
- Auditorium and performing arts venue
- Broadcast studio
Technical Specifications
| Parameter | Specification |
|---|---|
| Output Power (4 ohm) | 700W per channel |
| Output Power (8 ohm) | 700W per channel |
| Output Power (70V) | 700W per channel |
| Output Power (100V) | 700W per channel |
| Frequency Response | 20Hz – 20kHz, +/-0.5dB @ 4/8 ohm, 70V, 100V |
| THD+N | <0.1% (20Hz – 20kHz) |
| Signal-to-Noise Ratio | >105dB (referenced to 8 ohm) |
| Dante Channels | 8x8 at 96kHz or 48kHz |
| Analog Inputs | 4 x balanced (Amphenol Anytek) |
| Input Sensitivity | Adjustable via DSP |
| Cooling | Front-to-rear variable-speed fan |
| Power Supply | Universal SMPS, 100–240 VAC, 50/60 Hz |
| Rack Units | 1U |
| Dimensions (W x D x H) | 19" x 14.25" x 1.75" |
| Weight | 14 lbs / 6.35 kg |
| Certifications | UL, CE, FCC |
Frequently Asked Questions
Q: Does the CS704D support 70V and 100V distributed audio on all four channels?
Yes. Each of the four channels can be independently configured for Hi-Z operation at 70V or 100V, or switched to Low-Z for 2, 4, or 8 ohm loads. This can be set per channel, not globally, which gives integrators flexibility when mixing distributed and direct-drive speaker circuits in the same rack unit.
Q: What is Dante, and does the CS704D support AES67?
Dante is a digital audio networking protocol developed by Audinate that transports uncompressed, low-latency audio over standard IP networks using Cat5e or Cat6 cabling. The CS704D includes dual Dante ports (primary and secondary) for redundancy and supports AES67, an interoperability standard that allows Dante devices to exchange audio with other AES67-compatible systems from different manufacturers.
Q: Can the CS704D be managed remotely without being on the same local network?
Yes. The CS704D connects to the LEA Cloud platform over any internet connection. Once registered, the amplifier can be monitored, controlled, and updated remotely from a standard web browser without requiring a VPN or on-site access. This is particularly useful for multi-site installations managed by a single integrator.
Q: What does Smart Power Bridge Technology mean?
LEA's Smart Power Bridge Technology allows the amplifier to operate in bridged mono mode — combining two channels into a single high-power output — without permanently dedicating those channels to bridge mode. This means you can drive a subwoofer or high-power single loudspeaker with bridged output while the remaining channels continue to operate normally.
Q: Is the CS704D compatible with existing analog sources?
Yes. The amplifier accepts balanced analog inputs via Amphenol Anytek connectors on all four channels. LEA Professional sells the XLRF adapter (female XLR to Amphenol Anytek) and the RCAF-2 adapter (female RCA to Amphenol Anytek) to connect standard XLR or RCA sources to the CS704D's analog inputs without custom wiring.
Q: What rack space does the CS704D require?
The CS704D occupies 1U (1.75 inches) of vertical rack space in a standard 19-inch equipment rack. At 14.25 inches depth, it is compatible with both shallow and standard-depth rack enclosures.
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- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
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