LEA Professional CS354 – 4-Channel 1400W Networked Amplifier with DSP
LEA Professional CS354 – 4-Channel 1400W Networked Amplifier with DSP is backordered and will ship as soon as it is back in stock.
Shipping Availability*
Shipping Availability*
Free Ground Shipping on Most Orders Over $250.00
Looking for the best price or expert advice? Give us a call at 1-888-230-3661 or use the Live Chat below. Buying 1 or 100, you may qualify for greater savings beyond the advertised price.
LEA Professional CS354 – 4-Channel 1400W Networked Amplifier with DSP
Product Overview
The LEA Professional CS354 is a 4-channel, 1400W Class-D commercial-grade rack-mount amplifier with onboard DSP and IoT-enabled network management, connecting via 100 Mbps Ethernet or built-in Wi-Fi. Delivering 350W per channel, the CS354 supports both Low-Z (2, 4, and 8 ohm) and Hi-Z (70V or 100V) distributed audio operation independently per channel, making it effective for commercial AV installations that require multi-zone amplification without the added cost of Dante licensing. Part of LEA Professional's ConnectSeries, the CS354 is managed through the LEA Cloud platform using any standard web browser.
Product Description
The CS354 uses LEA's proprietary Smart Power Bridge Technology to provide bridged mono capability without permanently removing a channel from service. Each of the four channels independently selects between Low-Z (2, 4, or 8 ohm) and Hi-Z (70V or 100V) operation, so a single unit can simultaneously drive direct-impedance loudspeakers alongside distributed ceiling speaker circuits at 70V or 100V.
Signal processing is handled by an Analog Devices Sigma 96kHz DSP with a 32-bit core and onboard sample rate converters. Analog audio enters via balanced Amphenol Anytek connectors on all four channels. Network connectivity for control and monitoring uses either the 100 Mbps Ethernet port or the built-in Wi-Fi, which operates in both access-point mode and local network client mode. The LEA Cloud platform enables remote configuration, monitoring, and firmware updates from any internet-connected browser without requiring on-site access. Power comes from a universal SMPS rated 100–240 VAC, and cooling is front-to-rear variable-speed fan. The CS354 occupies 1U in a standard 19-inch equipment rack.
| Specification | Value |
|---|---|
| Channels | 4 |
| Power Output per Channel | 350W |
| Total Output Power | 1400W |
| 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
- 350W per channel, 4 channels — 1400W total Class-D output in a 1U rack unit.
- Per-channel Lo-Z / Hi-Z switching — Each channel independently configurable for 2/4/8 ohm or 70/100V operation.
- Smart Power Bridge Technology — Bridged mono output without permanently removing channels from service.
- Analog Devices Sigma DSP, 96kHz/32-bit — Onboard EQ, delay, limiting, crossovers, and signal routing.
- Dual connectivity — 100 Mbps Ethernet and built-in Wi-Fi (AP + client modes) for flexible network integration.
- LEA Cloud IoT management — Remote monitoring, configuration, and firmware updates via web browser.
- Universal AC input — 100–240 VAC SMPS power supply for global compatibility.
- 1U rack-mount form factor — Space-efficient for multi-amplifier rack 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 (distributed zone)
Technical Specifications
| Parameter | Specification |
|---|---|
| Output Power (4 ohm) | 350W per channel |
| Output Power (8 ohm) | 350W per channel |
| Output Power (70V) | 350W per channel |
| Output Power (100V) | 350W 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 CS354 and the CS354D?
The CS354 connects to networks via 100 Mbps Ethernet and built-in Wi-Fi, and accepts analog audio inputs only. The CS354D adds dual Dante ports (primary and secondary) for networked digital audio transport over a standard IP network, which is necessary for Dante-based AV system architectures. If your installation uses analog signal sources and does not require Dante, the CS354 provides the same power output and DSP at a lower cost.
Q: Can the CS354 drive both 70V distributed speakers and direct-impedance loudspeakers at the same time?
Yes. Each of the four channels independently selects between Hi-Z (70V or 100V) and Low-Z (2, 4, or 8 ohm) operation. A single CS354 can therefore run a 70V ceiling speaker zone on channels 1 and 2 while simultaneously driving 8 ohm loudspeakers on channels 3 and 4, all from one rack unit.
Q: Does the CS354 require an AV control system for remote management?
No. Remote management is handled through the LEA Cloud platform, which is browser-based and requires no proprietary control hardware. The CS354 connects to the LEA Cloud over any internet connection via its Ethernet port or Wi-Fi. Local network control is also available without cloud access if required by the installation environment.
Q: What analog input connectors does the CS354 use?
The CS354 uses Amphenol Anytek balanced 3-pin connectors for all four analog inputs. To connect standard balanced XLR sources, use the LEA Professional XLRF adapter. For unbalanced RCA sources, use the RCAF-2 two-pack adapter, both available separately.
Q: How does the CS354 handle cooling in rack environments?
The CS354 uses front-to-rear variable-speed fan cooling, drawing air in from the front of the rack and exhausting it from the rear. Fan speed is automatically adjusted by the amplifier based on thermal load. Ensure the rack has adequate rear ventilation and at least 1U of clearance above or below the unit for proper airflow.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- 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.
Nationwide Audiovisual Services, Design, Installation & Support
Creation Networks is a trusted nationwide partner for complete audiovisual solutions — delivering expert AV system sales, professional design, programming, installation, and ongoing support to organizations across the United States.
From Microsoft Teams Rooms and enterprise video conferencing to LED video walls, live streaming production, and hybrid collaboration systems, we provide end-to-end AV integration using premium, certified technology from industry leaders including Crestron, Q-SYS, Shure, Extron, and Absen.
Whether you operate a single location or manage facilities nationwide, Creation Networks ensures your AV systems are designed for reliability, scalability, security, and long-term performance — helping your organization communicate more effectively and operate at peak efficiency.
CREATION NETWORKS — A PARTNER YOU CAN TRUST SINCE 2006
