Heritage Audio / HA-609A Elite

The HA-609A is a classic transformer-coupled diode bridge compressor/limiter that can be used for a wide range of applications including recording and mixing.

■Dual mono/stereo compressor/limiter
The HA-609A is a professional diode bridge-based dynamics processor. A modern design is introduced to adapt the classic transformer-coupled diode bridge compressor/limiter to today's workflow.

The HA-609A features a fully discrete class A design and three Carnhill/St.Ives transformers per channel. The compressor and limiter sections feature a fast attack mode ""FAST"", allowing flexibility for individual tracks as well as groups and two buses. Benefiting from the diode bridge gain reduction cell used in the highly acclaimed SUCCESSOR, the HA-609A also offers excellent channel matching. Coupled with a rotary switch and stepped potentiometer, recall is easy and the stereo image is not compromised.

As with the rest of the Elite series, the HA-609A offers unprecedented value without compromising quality. Of course, all manufacturing is done at Heritage Audio's factory in Spain. ■Specifications
[Compressor section]
-Threshold: -20 dBu to +20 dBu *41 steps (high-precision potentiometer)
-Ratio: 1.5:1 to 6:1 *5 steps
-Release: 100 ms to 1500 ms, A1, A2 *6 steps
*A1: Usually approx. 500 ms, equivalent to 50 ms when peak detection
*A2: Usually approx. 1500 ms, equivalent to 50 ms when peak detection
-Attack: SLOW / FAST *2 steps

[Limiter section]
-Limiter level: 0 dBu to +20 dBu *41 steps (high-precision potentiometer)
-Release: 50 ms to 800 ms, A1, A2 *6 steps
*A1: Usually approx. 800 ms, equivalent to 50 ms when peak detection
*A2: Usually about 1500 ms, equivalent to 50ms when peak detection

・Attack: SLOW / FAST *2 stages

・Gain: 0 dB to +20 dB *41 stages (high precision potentiometer)

・Maximum input level: +22 dBu or more

・Maximum output level: +26.5 dBu or more, 600Ω load

・Self-noise: -75 dBu or less, @ 20 Hz to 20 kHz, -80 dBu A-weighted

・Total harmonic distortion (50 Hz to 20 kHz): 0.07% @+20 dBu

・Frequency response: 15 Hz to 30 kHz (±0.5 dB) *When compressor and limiter are off

・Input impedance: 10 kΩ, transformer balanced, floating

・Output impedance: 75 Ω or less, transformer balanced, floating, class A drive

-Input terminals (each channel): XLR balanced

-Output terminals (each channel): XLR balanced

*Dedicated power supply (PSE certified) included