Loading... Please wait...

Cloud VTX4400


  • Image 1
  • Image 2

Product Overview

The Cloud VTX range of four-channel power amplifiers are intended for commercial and industrial public address and sound reinforcement applications where unquestionable long-term reliability is the primary consideration.

The VTX4400 offers 4 x 400W into 4 ohms. Designed with precision, the new Cloud range achieves long term high quality acoustic performance, built in accordance with Cloud's principle of reliability, the VTX series is the perfect choice for low maintenance and worry free installations.



  • 4 x 400W into 4 ohms
  • Extensive protection against short-circuit and reactive loads, clipping, DC and overheating
  • Optional VTX-WM1 card allows amplifier monitoring from any web browser
  • Per-channel, front panel LEDs for power status, signal presence, peak level and protection
  • Balanced line level inputs with gain trim
  • Input routing switches
  • Bridge mode switches
  • Per channel switched hi-pass filter (18dB/oct below 65Hz)
  • Forced-air cooling
  • Compatible with RL1 remote volume control
  • Optional BOSE EQ cards available
  • 2U 19" rackmounting unit


  • RL-1 & RL-1A Remote Music Level Control
  • XLRF1 Female XLR Input Module
  • BOSE Loudspeaker EQ Card
  • VTX-WM1 Web Monitor Card - VTX Amp Series
  • EQ Cards for Amina AIWX & LFiT Loudspeakers
  • CXL-400T 400W Toroidal Transformer
  • CXL-1600 Rack Mounting Housing
  • RL-1B Remote Volume Level Control Plate in Black
  • RL-1W Remote Volume Level Control Plate in White
  • RL-1MW Remote Volume Level Media Control Plate in White


Full specifications are available under the Downloads tab above


  • Output (Normal Mode): 400 W (4Ω)
  • Output (Bridged Mode): 800 W (8Ω)
  • Frequency Response: 20 kHz to 20 kHz, +0/-1 dB; (HPF bypassed)
  • High Pass Filter: -3 dB @ 65 Hz, slope 18 dB/octave (switchable)
  • Distortion:  THD + N <0.03% @ 1 kHz, 1 W output, 4 Ω load
  • Crosstalk: < -90 dB @ 1 kHz, -70 dB @ 10 kHz
  • Sensitivity: 0.775 Vrms (0 dBu)
  • Input Impedance: 10 kΩ, balanced
  • Noise (rms): <100 dB below full output power, 20 Hz to 20 kHz



  • Inputs: Electronically balanced;
                 3-pin 3.5 mm-pitch plug-in screw terminal connectors
  • Outputs: 2-pin 5 mm-pitch plug-in screw terminal connectors
  • Main Protection: By resettable rear-panel circuit breaker
  • Amplifier Protection: Clip Limiting, VI Limiting, DC Offset,
                                    Thermal & switch-on delay
  • Status Indicators: LED Indicators on each channel for Power Status,
                                Signal Presence, Peak Level & Protection
  • Cooling: Two mid-mounted variable speed DC fans
  • Dimensions (mm, W x H x D): 482.6 mm x 88.3 mm (2U) x 416 mm
                                                  (exc. connectors); 450 mm (inc. connectors)
  • Weight: 20.0 kg (net)

Product Downloads

  • VTX4400 Data Sheet PDF 0.6 MB
  • VTX4400 Manual PDF 1.8 MB


Take The Next Step

Enquire about this product

Product Categories

*Prices are in AUD, include GST and are subject to change. Please call National Audio for pricing and availability on the VTX4400.