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CLOUD CV2500 POWER AMPLIFIER 70/100V, 2x 500W, Class D, onboard DSP, network controllable, 2U
CLOUD CV2500 POWER AMPLIFIER 70/100V, 2x 500W, Class D, onboard DSP, network controllable, 2UCLOUD CV2500 POWER AMPLIFIER 70/100V, 2x 500W, Class D, onboard DSP, network controllable, 2UCLOUD CV8125 POWER AMPLIFIER 70/100V, 8x 125W, Class D, onboard DSP, network controllable, 2UCLOUD CV8125 POWER AMPLIFIER 70/100V, 8x 125W, Class D, onboard DSP, network controllable, 2UCLOUD CXV225 POWER AMPLIFIER 100V, 2x 250W, transformer-less topology, 2UCLOUD CXV225 POWER AMPLIFIER 100V, 2x 250W, transformer-less topology, 2UCLOUD CXV425 POWER AMPLIFIER 100V, 4x 250W, transformer-less topology, 3UCLOUD CXV425 POWER AMPLIFIER 100V, 4x 250W, transformer-less topology, 3U

Cloud 70V or 100V line amplifiers have been designed for sound reinforcement application within retail, leisure, commercial, hospitality or industrial sectors, giving the user access to multiple channels of amplification within a single 19-inch rackmount unit.

VA Series


VA2120

A cost-effective 2-channel solution for commercial premises where a choice of low impedance or 25/70/100V line output is required. Each output channel provides a continuous output of 120watts, 1kHz continuous sine wave, with a frequency response of 20Hz to 20kHz.

The front facing panel of the 2U rack-mountable amplifier hosts only a rocking power switch to the right side, and LEDs to provide illustration of power as well as protection, clip, and signal for each of the two channels. A slotted panel allows for ventilation and forced air cooling within the amplifier carcass.

The rear facing panel hosts all input and output connectivity and switching, including input level attenuators via a small slotted dials, a 65Hz high pass filter on/off switch per channel, and AC mains input via IEC connection. All audio connections are via Phoenix style terminal connectors.

Input impedance: 47kohms. Headroom: 16dB. Noise: Less than -85dB, 22kHz bandwidth. Power consumption: 14W, 20.8Va, idle; 206W, 260VA, 1/8th power; 230W, 280Va, 1/3rd power. Dimensions: 482.6 x 88 x 310mm (WxHxD). Weight: 10.9kg.


VA4120

This amplifier has all the attributes of the VA2120 however it has four input channels and four output channels. With the exception of the duplicate channels and a second cooling fan, all switching and functionality is the same.

Input impedance: 47kohms. Headroom: 16dB. Noise: Less than -85dB, 22kHz bandwidth. Power consumption: 27.5W, 20.8Va, idle; 418W, 260VA, 1/8th power; 562W, 280Va, 1/3rd power. Dimensions: 482.6 x 88 x 408mm (WxHxD). Weight: 18.2kg.

CV Series


CV2500

This Class-D, 70/100V line amplifier has two channels, each with an output of 500W. It has been designed so that an engineer can set the primary configuration settings, such as input routing via DIP switches located on the rear facing panel. It has also been designed with options to allow the user to control remotely via RS-232 or with a computer via Ethernet. This includes the user-configurable DSP settings such as 5-band parametric EQ, routing, delay - a total delay of 1428ms can be applied across the output channels; 65Hz high-pass filtering, delay, and limiting for all channels. Output DC detection, over-current protection and thermal monitoring are incorporated for safety, whilst an automatic power-down (APD) function switches the amplifier into standby mode, consuming around 2.5W if no input signal has been detected for 30 minutes. The user can also use an external contact closure switch to put the amplifier into standby mode. ‘Wake-up’ time is typically 200ms.

The front facing panel houses slot air vents for the internal cooling system, along with channel specific LEDs to signify signal present (green), that illuminates when the output level is 30dB below the rated output power; peak (yellow), protect (red), and ‘powered’ (green) that is illuminated when the associated channel is active and hasn’t been powered down via APD. A ‘soft’ power switch is located in the centre section of the front panel, with an LED to indicate when on.

The rear facing panel has all I/O connectivity including 85-264V IEC AC power input. Electronically balanced input is via 3-pole 3.5mm-pitch, removable screw-type connection, with similar connections for RS232 connection and auxiliary outputs. GPIO, remote level, remote power down, and 70/100V line outputs are via 5mm-pitch plug in screw-type connection. There is a rotary control to set the remote level from 0-10. Ethernet connectivity is via RJ45 connection with yellow and green LED to indicate data transportation. Dip switches allows the on/off switching of 70/100V, 65Hz high pass filter, and input channel routing.

Maximum output power: 1kW, all channels driven. Output voltage: 70V or 100V. Frequency response: 20Hz – 20kHz, +/-0.5dB. Distortion: 0.03% THD, at 1kHz, 1dB below rated output. Crosstalk: Less than -90dB at 1kHz, -82dB at 10kHz, adjacent channels; less than -107dB at 1kHz, -93dB at 10kHz, non-adjacent channels. Input sensitivity: 0dBu, 0.775Vrms. Power input: 85-264V AC, 40-60Hz. Mains protection: 3T 250V fuse, 20 x 5mm, rating T8A. Dimensions: 482.6 x 88 x 381.8mm (WxHxD). Weight: 6.86kg.


CV4250

The CV4250 has four channels capable of driving a maximum of 250W per channel, and weighs 7.26kg. All other functional properties and audio specifications are the same as the CV2500.


CV8125

The CV8125 has eight channels capable of driving a maximum of 125W per channel, and weighs 8.05kg. All other functional properties and audio specifications are the same as the CV2500.

Dante option cards

CDI-CV2, CDI-CV4, and CDI-CV8 are optional Dante network cards for CV2500, CV4250, and CV8125 amps respectively. These retrofit option cards allow the amplifier to be directly fed from a Dante audio network, providing 2, 4, or 8 input channels. The cards support 16/24/32bit PCM sample sizes, whilst also supporting 44.1/48/88.2/96kHz sample rates. The inputs can be controlled bu Dante Controller and Dante Domain Manger software.

CA Series


CA2250

CA2250 is a Class-D amplifier that offers two channels of output into low impedance (4 or 8ohm systems), or 70/100V line systems. Each output of the CA2250 gives a maximum of 250W, and it is capable of analogue audio input via balanced/unbalanced 3-pin plug-in screw-terminal connectors, or Dante audio network input when the optional CDI-CA2 Dante board is retrofit.

When using the amplifier as part of a 70/100V line system, the maximum output of odd and even channels can be shared. This means, on the larger amplifiers like CA4250, CA6160, and CA8125, all of the even channels can together produce a maximum of 500W, and the odd channels can do the same. This is particularly useful when installing into a venue where multiple rooms with 70/100V line have differing numbers of speakers.

CA2250 has energy efficient properties including channel mute function that operates when no input signal has been detected for 15 minutes. The amplifier immediately ‘wakes up’ the channel or group when an input signal is detected. If no input signal is detected for 25 minutes, the automatic power down (APD) feature moves the channel or group into a low-power standby mode to consume less than 2.5W when all channels are switched. The user can alternatively use the remote standby/wake up function which uses external contact closure to operate.

The front facing panel features vents for forced-air cooling, along with LEDs to signify signal, peak, protection, and powered. The number of LEDs depends on the number of channels on the amplifier – in the case of CA2250 there are two of each LED. A power button allows the on/off switching of the amplifier. The rear facing panel again houses vents for cooling, mains IEC connection, and input connection via 3-pole, 3.5mm-pitch plug-in screw-terminal connectors. There is also a 2-pin connector for remote power down functionality when using external closure switching, connector for speaker output channels one and two, and a host of dip switches to switch channel Hi-Z/Lo-Z output, 4ohm/70V or 8ohm/100V, input routing, APD (auto power down) on/off, and channels one/two high pass filter – which is set at 65Hz.

Maximum output power: 500W, all channels driven. Outputs: 4/8ohms/70/100V. Frequency response: 20Hz – 20kHz, +/-1dB. Distortion: 0.0019% THD, at 1kHz, 1dB below rated output. Crosstalk: Less than -98dB at 1kHz, -79dB at 10kHz. Input sensitivity: 0dBu, 0.775Vrms. Input impedance: 10kohms, balanced; 5kohms, unbalanced. Power input: 85-265V AC, 50-60Hz. Dimensions: 482.6 x 88 x 231.3mm (WxHxD). Weight: 4.5kg.


CA2500

This amplifier has two channels capable of driving a maximum of 500W per channel. Dimensions (WxHxD): 482.6 x 88 x 381.8mm. Weight: 6.75kg. All other functional properties and audio specifications are the same as CA2250.


CA4250

This amplifier has four channels capable of driving a maximum of 250W per channel. Dimensions (WxHxD): 482.6 x 88 x 381.8mm. Weight: 7.10kg. All other functional properties and audio specifications are the same as CA2250.


CA6160

This amplifier has six channels capable of driving a maximum of 160W per channel. Dimensions (WxHxD): 482.6 x 88 x 381.8mm. Weight: 7.55kg. All other functional properties and audio specifications are the same as CA2250.


CA8125

This amplifier has eight channels capable of driving a maximum of 125W per channel. Dimensions (WxHxD): 482.6 x 88 x 381.8mm. Weight: 7.95kg. All other functional properties and audio specifications are the same as CA2250.

Dante option cards

CDI-CA2, CDI-CA4, and CDI-CA8 are optional Dante network cards for CA series amplifiers. These retrofit option cards allow the amplifier to be directly fed from a Dante audio network. Any card will retrofit any CA series amplifier however it will be limited by the maximum number of channels in the given amplifier. The cards support 16/24/32bit PCM sample sizes, whilst also supporting 44.1/48/88.2/96kHz sample rates. The inputs can be controlled bu Dante Controller and Dante Domain Manger software.

CXV Series


CXV225

This 2-channel amplifier has been designed to offer 250W into 40ohms per channel into a 100V line system. The ‘transformer-less topology’ used in the design process has reduced the size and weight of the amplifier, along with other associated issues such as limited frequency response. The amplifier has DC, short-circuit, and thermal protection at the output stage whilst a forced-air, thermostatically-controlled fan controls the operating temperature. An adjustable 20Hz-200Hz high pass filter for each channel gives the engineer the option to limit the low frequencies entering the speaker system.

The front facing panel of the amplifier has vents for air intake, a latching rocker-style power switch, and LEDs to indicate signal present (green), peak (yellow), and protection mode (red) for each channel. A green LED illuminates when the amplifier is powered on. The rear facing panel houses all I/O connectivity and user control including high-pass filter adjustment, and channel input level adjustment. The electronically balanced inputs are by way of 3-pin, 3.5mm-pitch plug-in screw terminal. The outputs are by way of 2-pin, 5mm-pitch plug-in screw terminals. 230V AC power input is via IEC connection.

Output power: 100Vrms, 250W into 40ohm (min) load, per channel. Frequency response: 20Hz – 20kHz, +/-0.6dB. Distortion: 0.04% THD, at 1kHz, 1dB below limiting. Crosstalk: -80dB at 10kHz. Input sensitivity: 0dBu, 0.775Vrms. Input impedance: 10kohm, balanced; 5kohm, unbalanced. Power input: 230V AC. Mains protection: T5A 250V fuse, 20 x 5mm. Dimensions: 482.6 x 88 x 300mm (WxHxD). Weight: 8.8kg.


CXV425

This amplifier has the same principles as the CXV225, however has four channels, each capable of driving 250W, and is housed within a 19-inch rackmount 3U chassis. The two thermostatically-cooled fans are mounted within the rear facing panel.

Dimensions: 482.6 x 132.5 x 332mm (WxHxD). Weight: 21kg.

  Description Price £
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CLOUD VA2120 POWER AMPLIFIER 25/70/100V/4ohm, 2x 120W, 2U rackmount Stock code: 93-0796
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£393.70
CLOUD VA4120 POWER AMPLIFIER 25/70/100V/4ohm, 4x 120W, 2U rackmount Stock code: 93-0797
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£795.00
CLOUD CV2500 POWER AMPLIFIER 70/100V, 2x 500W, Class D, onboard DSP, network controllable, 2U Stock code: 93-0791
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£1,500.00
CLOUD CV4250 POWER AMPLIFIER 70/100V, 4x 250W, Class D, onboard DSP, network controllable, 2U Stock code: 93-0792
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£1,800.00
CLOUD CV8125 POWER AMPLIFIER 70/100V, 8x 125W, Class D, onboard DSP, network controllable, 2U Stock code: 93-0793
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£2,200.00
CLOUD CA2250 POWER AMPLIFIER 70/100V/4/8ohm, 2x 250W, Dante option, 2U rackmount Stock code: 93-0691
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£790.00
CLOUD CA2500 POWER AMPLIFIER 70/100V/4/8ohm, 2x 500W, Dante option, 2U rackmount Stock code: 93-0692
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£990.00
CLOUD CA4250 POWER AMPLIFIER 70/100V/4/8ohm, 4x 250W, Dante option, 2U rackmount Stock code: 93-0693
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£1,290.00
CLOUD CA6160 POWER AMPLIFIER 70/100V/4/8ohm, 6x 160W, Dante option, 2U rackmount Stock code: 93-0694
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£1,590.00
CLOUD CA8125 POWER AMPLIFIER 70/100V/4/8ohm, 8x 125W, Dante option, 2U rackmount Stock code: 93-0695
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£1,890.00
CLOUD CXV425 POWER AMPLIFIER 100V, 4x 250W, transformer-less topology, 3U Stock code: 93-0795
No longer manufactured. See the product page for suggested alternatives.
CLOUD CXV225 POWER AMPLIFIER 100V, 2x 250W, transformer-less topology, 2U Stock code: 93-0794
No longer manufactured. See the product page for suggested alternatives.
CLOUD CDI-CA2 DANTE OPTION CARD For CA2250/CA2500 Stock code: 93-0696
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£288.70
CLOUD CDI-CA4 DANTE OPTION CARD For CA4250 Stock code: 93-0697
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£341.20
CLOUD CDI-CA8 DANTE OPTION CARD For CA6160/CA8125 Stock code: 93-0698
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£572.00
CLOUD CDI-CV2 DANTE OPTION CARD For CV2500 Stock code: 93-0787
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£309.70
CLOUD CDI-CV4 DANTE OPTION CARD For CV4250 Stock code: 93-0788
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£362.20
CLOUD CDI-CV8 DANTE OPTION CARD For CV8125 Stock code: 93-0789
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£572.00