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Heritage Audio HA-609A Dual-Channel Bus Compressor/Limiter

BH #HEHA609A • MFR #HA-609A
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Heritage Audio HA-609A Dual-Channel Bus Compressor/Limiter
Key Features
  • Selectable Stereo or Dual-Mono Operation
  • Three Carnhill Transformers per Channel
  • Standard and Fast Attack Times
  • True Bypass per Channel
Offering vintage character and flexible dynamic control that's well suited for individual instruments, submixes, and stereo mastering, the Heritage Audio HA-609A is an Elite Series boutique dual-channel bus compressor and limiter with a discrete, Class-A, diode bridge design and three Carnhill transformers per channel.
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Heritage Audio HA-609A Overview

Offering vintage character and flexible dynamic control that's well suited for individual instruments, submixes, and stereo mastering, the Heritage Audio HA-609A is an Elite Series boutique dual-channel bus compressor and limiter with a discrete, Class-A, diode bridge design and three Carnhill transformers per channel.

Whether stereo linked or used in dual mono, the HA-609A provides versatile configurability via per-channel rotary switches and stepped potentiometers for settings such as threshold, ratio, release, and make-up gain. Featured enhancements include an extended threshold range, standard/fast attack times, and true bypass.

Connectivity is accessible via balanced 3-pin XLR jacks on the rear panel. The HA-609A's front panel sports two large VU meters for clear display of each channel's gain reduction. The HA-609A occupies 2 RU of rack space.

A New Take on an Old Secret
Based on classic European designs, this boutique dual-channel compressor and limiter features a discrete Class-A signal path packed with three Carnhill / St. Ives transformers per channel to impart character and color along with punch and glue.
Versatile Compressor Section
The compressor section of the HA-609A presents per-channel controls for threshold, ratio, release, attack, make-up gain, and bypass. The standard attack time is optimized for program material, whereas the fast attack mode is advantageous for controlling transients on sources such as drums and percussion. Taking inspiration from the famed '73 preamp, the make-up gain is performed by a Class-A amplifier with a transformer-coupled output.
Adjustable Limiter
Equipped with selectable attack time (standard or fast), multiple release times, and an extended threshold, the HA-609A is designed to deliver limiting that's exactly what you need, whether it's taming peaks, preventing mixes from clipping, or drastically shaping stems.
Diode Bridge Design
The diode bridge design allows the compression curve/response to be precisely matched from channel to channel within hundredths of a dB.
Ideal for Tracks, Submixes, or Stereo Mixes
Though the HA-609A is a dual-channel unit, it can be operated in linked stereo or dual mono. Each channel has a true bypass function for proper A/B comparison listening. By incorporating rotary switches and stepped potentiometers, the HA-609A enables easy and accurate channel matching and recall. As with other models in Heritage Audio's Elite series, the HA-609A is handmade at the Heritage headquarters in Spain.
UPC: 750536937171

Heritage Audio HA-609ASpecs

Function
Compressor/Limiter
Number of Channels
2
Inputs
2 x XLR 3-Pin Female (Balanced)
Outputs
2 x XLR 3-Pin Male (Balanced)
Input Impedance
10 Kilohms (Transformer Balanced and Floating)
Output Impedance
<75 Ohms (Transformer Balanced and Floating, Class-A Driven)
Maximum Input Level
> +22 dBu
Maximum Output Level
> +26.5 dBu into 600 Ohms
Compression Threshold
-20 to +20 dBu
Compression Ratio
1.5:1, 2:1, 3:1, 4:1, 6:1
Attack Time
Standard or Fast
Release Time
Compressor: 100 ms, 400 ms, 800 ms, 1500 ms, Automatic 1 (50 ms on Peaks and Approximately 500 ms on Sustained Program), or Automatic 2 (50 ms on Peaks and 1500 ms on Sustained Program)
Limiter: 50 ms, 100 ms, 200 ms, 800 ms, Automatic 1 (50 ms on Peaks and Approximately 800 ms on Sustained Program), or Automatic 2 (50 ms on Peaks and 1500 ms on Sustained Program)
Make-up Gain
0 to +20 dB
Self Noise
< -75 dBu (20 Hz to 20 kHz)
-80 dBu (A-Weighted)
THD+N
<0.07% at +20 dBu (50 Hz to 20 kHz, Not Engaged)
Frequency Response
15 Hz to 30 kHz ±0.5 dB (Compress and Limit Out)
Country of Manufacture
Spain
Dimensions
Not Specified by Manufacturer
Weight
Not Specified by Manufacturer
Packaging Info
Package Weight
11.435 lb
Box Dimensions (LxWxH)
22.4 x 12.9 x 5.1"

Heritage Audio HA-609A Reviews

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