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Klark Teknik

Klark Teknik DN504 Quad Compressor/Limiter

$289.99

The Klark Teknik ON 504 Quad Compressor/Limiter has been designed to give the studio or PA engineer comprehensive and convenient automatic control over gain and level. Four channels of compression are available in one unit of nineteen inch rack space. Even at this high packing density, the degree of control over each channel of audio is greater than that found on many conventional two channel compressor/limiters. As a Compressor, the DN504 can achieve almost undetectable dynamic range reduction by the use of sophisticated automatic attack and release circuitry. Or compression can be used as an effect in its own right with full manual control over Threshold, Ratio, Attack, Release and Gain. There is also a switchable ‘Knee’ control which provides the option of Hard or Soft compression styles.

View Product Features
  • Stereo linking: Adjacent channels can be linked together in pairs (1/2 and 3/4) to process stereo signals and prevent image shifting.
  • Sidechain inputs: Each channel features its own sidechain input, allowing an external signal to trigger the compressor. This is useful for advanced techniques like ducking.
  • Limiter function: With the ratio set to its maximum (50:1), the DN504 can act as a high-quality, fast-acting limiter.
  • VCA design: The unit uses an advanced VCA (Voltage Controlled Amplifier) design, which contributes to its low-noise and low-distortion performance.
  • Metering: Each channel has separate LED bar graph meters to display gain reduction and output levels.
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About the Klark Teknik DN504 Quad Compressor/Limiter

The Klark Teknik DN504 Quad Compressor/Limiter is a professional, single-rack-space unit that provides four independent channels of high-quality audio compression and limiting, ideal for live sound, recording, and broadcast applications. It is highly regarded for its versatility, offering both subtle, inaudible gain control using sophisticated automatic circuitry and dramatic effects with full manual control over key parameters. Its advanced VCA design ensures extremely low noise and distortion.

Engineers find the Klark Teknik DN504 particularly useful for in-ear monitoring systems, as channels can be easily linked in pairs for stereo operation to prevent image shifting. Each channel is fully functional, featuring controls for Threshold, Ratio, Attack, Release, and Gain, along with switchable hard or soft knee compression styles. The unit provides comprehensive visual feedback with separate LED bar graph meters for gain reduction and output level on each channel, as well as dedicated side chain inputs for advanced techniques like ducking.

Key Features

  • Stereo linking: Adjacent channels can be linked together in pairs (1/2 and 3/4) to process stereo signals and prevent image shifting.
  • Sidechain inputs: Each channel features its own sidechain input, allowing an external signal to trigger the compressor. This is useful for advanced techniques like ducking.
  • Limiter function: With the ratio set to its maximum (50:1), the DN504 can act as a high-quality, fast-acting limiter.
  • VCA design: The unit uses an advanced VCA (Voltage Controlled Amplifier) design, which contributes to its low-noise and low-distortion performance.
  • Metering: Each channel has separate LED bar graph meters to display gain reduction and output levels.

Klark Teknik DN504 Quad Compressor/Limiter Specs

Channels
4 channels of full-function compression/limiting
Rack Space
1U standard 19" rack mountable chassis
Frequency Response
20 Hz – 20 kHz, ±0.5 dB
Distortion (THD+N)
<0.03% @ 1 kHz, +4 dBu
Equivalent Input Noise
< -94 dBu
Channel Separation
>90 dB @ 1 kHz
Threshold
-30 dBu to +20 dBu
Ratio
1:1 to 50:1
Knee
Switchable Hard or Soft compression styles
Attack Time
50 µs to 20 ms (manual)
Release Time
60 ms to 2 seconds (manual)
Output Gain
-10 dB to +30 dB
Side Chain Inputs
1/4" TRS jack for each channel
Audio Inputs/Outputs
XLR connectors
Dimensions
482mm W x 292mm D x 44.5mm H
Weight
5 kg (8.82 lbs for the Plus model)
Power Source
Switchable power supply (100V, 115V, 220-240V 50/60Hz AC)

Key Features

  • Stereo linking: Adjacent channels can be linked together in pairs (1/2 and 3/4) to process stereo signals and prevent image shifting.
  • Sidechain inputs: Each channel features its own sidechain input, allowing an external signal to trigger the compressor. This is useful for advanced techniques like ducking.
  • Limiter function: With the ratio set to its maximum (50:1), the DN504 can act as a high-quality, fast-acting limiter.
  • VCA design: The unit uses an advanced VCA (Voltage Controlled Amplifier) design, which contributes to its low-noise and low-distortion performance.
  • Metering: Each channel has separate LED bar graph meters to display gain reduction and output levels.
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