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Rack-mounted, High Definition Amplifier

The ESP1000 is a four channel rack mountable power amplifier specifically designed for optimised performance with KV2 Audio's ESD Cube / ESD1.10 subwoofer system. The unit contains four separate 250 watt amplifiers, two independent power supplies (two channels running off each power supply), four signal paths, inputs and outputs as well as limiting and equalization for given passive loudspeaker / subwoofers. Six independent configurations are selectable and it can be used to power any ESD units and other ranges of passive loudspeakers.


The ESP1000 will mount in a standard 19" rack system. Integral rear mounting rack ears are also provided for additional support. It is important that you do not rely on fixing and mounting the ESP1000 using just the front panel as the support. Use eight screws and washers to mount the amplifier to the equipment rack rails, (four for the fronts and four for the rear).


Primarily designed to drive and control the ESD Cube loudspeaker system and ESD range speakers with superior sound quality.

  • Fixed installations

  • Portable PA

System Acoustic Performance

-1dB Response: 3Hz to 50kHz / Flat Setup

Channel Crosstalk: >70dB

Signal to Noise: Ratio >115dB

Total Harmonic Distortion: <0.005% (1W) / <0.01% (clip -1dB)

Output Channels

Amplifier Type: High Efficiency, Emitter coupled

Number of Channels: 4

Total Output Power: 1000W

Minimum load impedance per channel: 4Ω

Out. Power 8Ω - 1 channel / 2 channels loaded 150W / 140W (RMS)

Out. Power 4Ω - 1 channel / 2 channels loaded 250W (RMS)

Out. Power 16Ω - bridged 300W (RMS)

Out. Power 8Ω - bridged 500W (RMS)

Signal Input

Input Channels: XLR

Input Sensitivity: 1.55V

Input Impedance: 20kΩ (balanced)

Signal Output: XLR Through

Speaker Output

Speaker Output: Neutrik Speakon®


Input Level Control: -∞ to 0dB

Equalization Flat or according to the setup

RMS Limiter: YES

Indicators: Power ON/Thermal, RMS Limiter, Signal

Power Requirements

Power Connector: Neutrik PowerCon®

Operating Voltage: 115V / 230V / 250V

Operating Voltage Range: 100 to 120V@60Hz | 205 to 240V@50Hz | 225 to 260V@50Hz

Recommended Amperage: 10A 115V | 5A 230V | 5A 250V

Soft Start: YES

Protection: Thermal breaker

Cooling: 2 x temperature-controlled fans

Physical Dimensions

Height 88 mm (3.5"), 2RU

Width 483 mm (18.95")

Depth 496 mm (19.5")

Weight 17,8 kg (32,24 lbs)

Product code

KVV 987 394 - ESP1000 (250V)
KVV 987 393 - ESP1000 (230V)
KVV 987 392 - ESP1000 (115V)

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