This powerful Lea Professional Connect 354 amplifier is perfect for musicians and sound engineers alike. With four channels and four inputs, this rack-mountable amplifier is designed for professional audio equipment and musical instruments. The 350 W power output ensures a clear, powerful sound that will bring your music to life. The Lea 354 amplifier also features four outputs and is ideal for use in large venues and outdoor performances. Whether you're a professional musician or just starting out, this amplifier is a must-have for any serious audio setup. Get ready to experience high-quality, distortion-free sound with the Lea Professional Connect 354.
The CONNECT 354 is a 4-channel amplifier with 350 watts per channel. As part of the Network CONNECTSERIES, the world’s first Internet of Things- (IoT) enabled professional-grade amplifiers, it is perfectly suited for small to medium-scale installations. The 354 features direct HiZ (70V or 100V) or LoZ selectable by channel. With three ways to connect, you can engage the built-in Wi-Fi access point, connect to the venue’s Wi-Fi, or use the FAST Ethernet to connect to any local area network via Cat5 or Cat6 cable.
Then there’s the Cloud…Network CONNECTSERIES is the first professional amplifier family to feature Cloud connectivity. Harness the power of the Cloud for remote control, monitoring, notifications, and more from any of your personal devices. Just connect your amp to a network and start commanding your systems. Register for your free LEA Cloud account at leaprofessional.cloud
The Network CONNECTSERIES also features analog inputs and external I/O control for remote on/off and fault monitoring.
U.S. Customers can register your product to extend your warranty to 6 years:
Power ratings are stated on a per-channel basis. Ex: 80 Watts at 8 ohms = 80 Watts on each individual channel of the amplifier.
MODEL |
# of CH's |
2Ω |
4Ω |
8Ω |
25V |
70V / 100V |
CONNECT 354 |
4 |
175W |
350W |
350W |
230W |
350W |
CONNECT 354 Features
- Web Browser-based UI works on any device with no software to download
- Direct LoZ and HiZ (70V or 100V) selectable per channel
- Proprietary Smart Power Bridge allows user to bridge a channel to achieve double the power of that channel without sacrificing an amplifier channel
- 3 Ways to Connect 1.) Built in WiFi Access Point 2.) Connects to existing WiFi network 3.) Local Area Network Ethernet connection
- 96kHz Analog Devices DSP with Input Routing, multiple 48dB/Oct crossover filters, 8 Parametric EQ filters, user configurable speaker limiters, and real time load monitoring
- Universal Switch Mode Power Supply with PFC. Operation from 100VAC – 240VAC +/-15%
- Analog fully routable inputs
- External I/O Port for Remote On/Off and fault monitoring
- Highly Efficient Class D Output Stage for low AC Current draw
CONNECT 354 Specifications
Audio Spec |
Inputs |
Analog: Balanced Inputs with user selectable 26 dB and 34 dB input sensitivity (4CH = 4 input) |
THD+N |
0.1% (20Hz to 20kHz) |
Frequency Response |
20Hz to 20kHz, +/- 0.5 dB @ 4Ω, 8Ω, 70V, 100V, -2.5dB @ 20kHz at 2Ω |
Signal to Noise Level |
105dB (20Hz to 20kHz referenced to 8Ω) |
Crosstalk |
70dB (20Hz to 20kHz) |
Amplifier Output Classification |
Class D with Proprietary Smart Power Bridge Technology allowing bridged output functionality without sacrificing an amplifier channel |
DSP |
DSP Architecture |
Analog Devices Sigma 96kHz DSP Processor with 32-bit Core with Sample Rate Converters |
Input Matrix |
Routable matrix; any input to any output with primary and secondary input priority |
Crossovers |
Up to 48 dB/Octave IIR Filters (Linkwitz Riley and Butterworth) |
Parametric EQ |
8 Band Parametric EQ per channel |
Output Delay |
100ms per channel |
Output Protection |
DC, VHF, and AC Mains Protection, Overtemp and Current Limiter, fan fault detection |
User Adjustable Limiting |
Peak Voltage and RMS Voltage |
Load Monitoring |
Realtime Load Monitoring and Pilot Tone Detection from Internal or External Sources |
Control, Monitoring, Network |
User Interface |
Web Browser User Interface, 3rd Party API control, or CLOUD control |
External I/O |
External I/O In: Toggles Remote On/Off
External I/O Out: Indicates Amplifier Health |
Operation |
AC Mains |
100VAC - 240VAC +/- 15% 50Hz or 60Hz |
Power Supply |
Universal Switch Mode Power Supply with Power Factor Correction |
Physical Spec |
Dimensions (L x W x H) |
Product: 14.25” x 19” x 1U (362mm x 482mm x 1U) x 1U (362mm x 482mm x 1U)
Shipping: 20” x 22.75” x 3.75” (508mm x 578mm x 95.25mm) |
Weight |
354: 14lbs / 4kg | Shipping: 18.7lbs / 8.5kg |
Cooling |
Front to Rear Variable Fan Speed Cooling
Fan Noise at idle is 50dB @ 1m
Fan Noise at 50% is 57dB @1m
Fan Noise at full speed is 63dB @ 1m |