LEA Professional CS164 – 4-Channel 640W Networked Amplifier with DSP
LEA Professional CS164 – 4-Channel 640W Networked Amplifier with DSP is backordered and will ship as soon as it is back in stock.
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LEA Professional CS164 – 4-Channel 640W Networked Amplifier with DSP
Product Overview
The LEA Professional CS164 is a 4-channel, 640W Class-D rack-mount amplifier with onboard DSP and IoT-enabled management over Ethernet or built-in Wi-Fi, designed for commercial AV installations that require multi-zone amplification without Dante. Delivering 160W per channel, the CS164 supports both Low-Z (2, 4, and 8 ohm) and Hi-Z (70V or 100V) operation independently per channel, providing practical flexibility for installations mixing ceiling speaker distributed audio with direct-drive loudspeaker feeds in a single 1U unit. As part of LEA Professional's ConnectSeries, it is managed remotely via the LEA Cloud platform through any standard web browser.
Product Description
The CS164 is built on LEA's proprietary Smart Power Bridge Technology, which allows bridged mono operation without permanently reassigning channels. Each of the four channels independently selects Low-Z (2, 4, or 8 ohm) or Hi-Z (70V or 100V) output to accommodate mixed system designs within a single rack unit. Signal processing is handled by an Analog Devices Sigma 96kHz DSP with a 32-bit core, providing EQ, crossovers, signal delay, limiting, and audio routing — all configurable via the LEA web interface or the LEA Cloud platform.
Balanced analog audio inputs connect via Amphenol Anytek 3-pin connectors on all four channels. Network connectivity for control uses either the 100 Mbps Ethernet port or the built-in Wi-Fi, which operates in both access-point mode and client mode for connection to an existing venue network. The LEA Cloud allows remote firmware updates, real-time monitoring, and parameter adjustments from any internet-connected device. Power is supplied by a universal SMPS (100–240 VAC), and the unit cools via front-to-rear variable-speed fans. At 1U and 19 inches wide, it fits standard equipment racks and pairs cleanly with other ConnectSeries amplifiers.
| Specification | Value |
|---|---|
| Channels | 4 |
| Power Output per Channel | 160W |
| Total Output Power | 640W |
| Load Impedance (Low-Z) | 2, 4, or 8 ohm (per channel) |
| Load Impedance (Hi-Z) | 70V or 100V (per channel) |
| Network Audio | Analog inputs only (no Dante) |
| Ethernet Control | 100 Mbps Ethernet |
| Wi-Fi | Built-in (AP + Client mode) |
| DSP | Analog Devices Sigma, 96kHz, 32-bit |
| Amplifier Class | Class D |
| Rack Format | 1U, 19-inch |
| Dimensions | 14.25" x 19" x 1U (362 x 482 mm) |
| Weight | 12.25 lbs / 5.56 kg |
| AC Input | 100–240 VAC, 50/60 Hz |
Key Features
- 160W per channel, 4 channels — 640W total Class-D output in a compact 1U form factor.
- Per-channel Lo-Z / Hi-Z switching — Each channel independently set for 2/4/8 ohm or 70/100V operation.
- Smart Power Bridge Technology — Bridged mono output available without permanently sacrificing a channel.
- Analog Devices Sigma DSP, 96kHz/32-bit — Onboard processing: EQ, delay, crossovers, limiting, and routing.
- Dual network connectivity — 100 Mbps Ethernet and built-in Wi-Fi (AP + client) for control and monitoring.
- LEA Cloud IoT management — Remote browser-based configuration, monitoring, and firmware updates.
- Universal AC input — 100–240 VAC SMPS for global deployment compatibility.
- 1U rack-mount — Efficient rack density for multi-zone commercial AV builds.
Typical Applications
- Boardroom and conference room
- Commercial meeting space
- Training room and all-hands room
- House of worship (zone amplification)
- Government and institutional space
- Multi-purpose room
- Auditorium (background / distributed zones)
Technical Specifications
| Parameter | Specification |
|---|---|
| Output Power (4 ohm) | 160W per channel |
| Output Power (8 ohm) | 160W per channel |
| Output Power (70V) | 160W per channel |
| Output Power (100V) | 160W per channel |
| Frequency Response | 20Hz – 20kHz, +/-0.5dB @ 4/8 ohm, 70V, 100V; -2.5dB @ 20kHz @ 2 ohm |
| THD+N | <0.1% (20Hz – 20kHz) |
| Signal-to-Noise Ratio | >105dB (referenced to 8 ohm) |
| Analog Inputs | 4 x balanced (Amphenol Anytek) |
| Cooling | Front-to-rear variable-speed fan |
| Power Supply | Universal SMPS, 100–240 VAC, 50/60 Hz |
| Rack Units | 1U |
| Dimensions | 14.25" x 19" x 1U (362 x 482 mm) |
| Weight | 12.25 lbs / 5.56 kg |
Frequently Asked Questions
Q: What is the difference between the CS164 and the CS164D?
The CS164 connects via 100 Mbps Ethernet and built-in Wi-Fi and accepts analog audio inputs only. The CS164D adds dual Dante ports for networked digital audio transport over a standard IP network, supporting AES67 interoperability. If your installation uses analog sources and does not require Dante, the CS164 provides the same 160W-per-channel output, DSP, and network management at a lower price point.
Q: Can the CS164 power both 70V ceiling speakers and direct-impedance speakers simultaneously?
Yes. Each channel on the CS164 independently selects Hi-Z (70V or 100V) or Low-Z (2, 4, or 8 ohm) operation. A single CS164 can, for example, drive a 70V ceiling speaker zone on two channels while simultaneously powering 8 ohm loudspeakers on the other two channels from the same rack unit.
Q: Is any special software required to configure the CS164?
No dedicated software is required. Configuration is performed through the LEA web interface, which is accessible via any browser on the same network. For remote access and cloud-based management, the CS164 connects to the LEA Cloud platform over an internet connection without requiring additional hardware or proprietary control software.
Q: What input connectors does the CS164 use?
The CS164 uses Amphenol Anytek balanced 3-pin connectors for all four analog inputs. LEA Professional offers the XLRF adapter (female XLR to Amphenol Anytek) for standard balanced XLR sources and the RCAF-2 adapter (female RCA to Amphenol Anytek, 2-pack) for unbalanced RCA sources, both sold separately.
Q: How much rack space does the CS164 require?
The CS164 occupies 1U (1.75 inches) in a standard 19-inch equipment rack and is 14.25 inches deep. Ensure the rack has adequate rear ventilation to support the front-to-rear cooling airflow of the unit.
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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.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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