LEA CS704 Connect Series Amp 700W x 4, 70V/100V/lowZ


The CONNECTSERIES 704 is a 4-channel amplifier with 700 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 704 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. 

The Network CONNECTSERIES also features analog inputs and external I/O control for remote on/off and fault monitoring.


  • CONNECT 704: 4 x 700 WRMS @ 4Ω, 8Ω, 70V, 100V (350W at 2Ω, 330W at 25V)


  • Inputs: 4 Analog: Balanced Inputs with user selectable 26 dB and 34 dB input sensitivity
  • THD+N: 0.1% (20Hz to 20kHz)
  • Frequency Response: +/- 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)
  • I/O Latency: 1 ms DSP latency under any condition
  • Load Impedance: LowZ down to 2 ohms, 70V direct, and 100V Direct per channel
  • Output Classification: Class D with Proprietary Smart Power Bridge Technology allowing bridged output functionality without sacrificing an amplifier channel
  • DC Offset: +/- 3mV


  • 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) and Bessel
  • Parametric EQ: 8 Band Parametric EQ per channel
  • Output Delay: 100ms per channel
  • Output Protection: DC, VHF, and AC Mains Protection, Over-temp and Current Limiter, fan fault detection
  • Limiting: Peak Voltage and RMS Voltage
  • Load Monitoring: Realtime Load Monitoring and Pilot Tone Detection from Internal or External Sources


  • Network Connectivity: Wi-Fi or 100MB Ethernet with PoE or Built in Wi-Fi Access Point (IEEE 802.11 b/g/n WPA, WPA2,
  • WEP)
  • User Interface: Web Browser User Interface or 3rd Party API control Q-Sys
  • Operating Systems: MAC, iOS, PC, Android
  • Event Reporting: User Downloadable and Viewable Event and Fault log - POE allows for enhanced error monitoring
  • External I/O: External I/O In: Toggles Remote On/Off | External I/O Out: Indicates Amplifier Health
  • Cloud IoT: Cloud based IoT functionality


  • AC Mains: 100VAC - 240VAC +/- 15% 50Hz or 60Hz
  • Temperature: Storage: -20°C to 90° C - Operating: 0°C to 60° C
  • Power Supply: Universal Switch Mode Power Supply
  • Safety Approvals: UL, CSA,CE, ETL, FCC, CCC, KETI, NOM , ROHS, PSE


  • 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:
    • Connect Series 354 & Connect Series 704: 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
  • Connectors: Analog Input: 3 pin Amphenol Anytek, Output: 2 pin Amphenol Anytek, External IO: 3 pin Amphenol Anytek, Power in: IEC, Ethernet RJ45 In for Control, Primary and Secondary RJ45 in for Dante ***Note: 84, 164, 88, 168 do not have potentiometers on the rear panel

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