Heritage Audio / HA-609A Elite

The HA-609A is a classic transformer-coupled diode bridge compressor/limiter. It can be used in 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. It incorporates a modern design to adapt the classic transformer-coupled diode bridge compressor/limiter to today's workflows.

The HA-609A features a fully discrete Class A design with three Carnhill/St. Ives transformers per channel. The compressor and limiter sections offer a fast attack mode, ""FAST,"" providing flexibility for individual tracks, groups, and even two buses. Benefiting from the highly acclaimed diode bridge gain reduction cell used in the SUCCESSOR series, the HA-609A also offers excellent channel matching. Combined with rotary switches and stepped potentiometers, recall is easy and doesn't compromise the stereo image.

Like other Elite series products, the HA-609A delivers unprecedented value without compromising quality. Of course, all manufacturing takes place 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: Approximately 500 ms under normal conditions, equivalent to 50 ms when peak is detected

* A2: Approximately 1500 ms under normal conditions, equivalent to 50 ms when peak is detected

* 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: Approximately 800 ms under normal conditions ms, equivalent to 50 ms when peak is detected

*A2: Approximately 1500 ms normally, equivalent to 50 ms when peak is detected

? Attack: SLOW / FAST *2 stages

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

? Maximum input level: +22 dBu or higher

? Maximum output level: +26.5 dBu or higher, with 600Ω load

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

? Total harmonic distortion (50 Hz - 20 kHz): 0.07% @ +20 dBu

? Frequency response: 15 Hz - 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 Terminal (each channel): XLR Balanced

* Output Terminal (each channel): XLR Balanced

* Dedicated power supply (PSE certified) included