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Heritage Audio 609A Dual Channel Compressor

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The Heritage Audio HA-609A is a modern take on the classic tracking/mixing diode bridge compressor with several improvements brought in to accommodat...Click To Read More About This Product

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Classic analog compression designed for modern workflows.

The Heritage Audio HA-609A is a modern take on the classic tracking/mixing diode bridge compressor with several improvements brought in to accommodate faster workflows. While some classic iterations of this design utilized some IC chips and a class A/B amplifier stage, the HA-609A features an entirely discrete, class A design and a total of three Carnhill/St Ives transformers per channel. The addition of a fast attack mode for both the compressor and limiter section allow the HA-609A the flexibility to handle individual tracks as well as groups and 2-bus program material. Thanks to a proprietary system of diode bridge gain reduction cells introduced with the highly regarded Successor, the HA-609A has better channel matching than any earlier incarnations, while the use of rotary switches and high quality, stepped pots allow for easy recall and maintain a perfect stereo image.

  • Limit release and attack adjustment
  • Compression release and attack adjustment
  • Variable threshold from -20 to +20 dBu
  • True bypass
  • Gain Makeup restores gain lost in compression as needed

Order the 609A dual-channel compressor today.

  • Maximum input level: Over +22 dBu
  • Maximum output level: Over +26.5 dBu into 600 ohms
  • Self-Noise: Less than -75dBu 20Hz-20Khz. -80dBu A-weighted
  • THD+N (50Hz- 20Khz): not engaged, less than 0.07% at +20dBu
  • Frequency response, COMPRESS and LIMIT OUT, +- 0.5dB, 15Hz- 30Khz
  • Input impedance: 10Kohms, transformer balanced and floating
  • Output impedance: Less than 75 ohms, transformer balanced and floating, Class A driven

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