HERITAGE AUDIO HA670N
HERITAGE AUDIO HA670N
Heritage Audio HA670N corresponds to the HERCHILD Next Gen Model 670N stereo tube compressor/limiter.
Specifications
Format
| Product type | Stereo tube compressor/limiter |
|---|---|
| Compression type | Vari-Mu |
| Operation modes | Dual mono/stereo plus LAT/VERT mid/side operation |
| Controls | Stepped controls, independent bypass per channel, side-chain filtering, output gain make-up and Progressive DC Threshold |
Circuit
| Tubes | 4 NOS military-grade 6BA6 tubes |
|---|---|
| Transformers | 6 custom-made transformers |
| Output stage | Transformer-coupled HA-880 op-amp output stage per channel |
| Time constants | 6 attack and release times matching original units |
Electrical
| Input impedance | 15 kOhms |
|---|---|
| Output impedance | 50 Ohms |
| Max output level | +29 dBu |
| Frequency response | 20 Hz-20 kHz +/-0.5 dB |
| Self noise | Less than -78 dBu |
| Harmonic distortion | Less than 0.5% up to +24 dBu output, no compression |
Fit and constraints
Intended use
Constraints
To use it
Questions
Which connections, drivers, operating systems, and sample rates are supported by this exact revision?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
What cables, mounts, power supplies, or licenses are included?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Is the current retailer listing new stock, demo stock, open box, or special order?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Description
Heritage Audio HA670N corresponds to the HERCHILD Next Gen Model 670N stereo tube compressor/limiter. Heritage describes it as a modern Fairchild/Vari-Mu-style compressor with independent bypass per channel, side-chain filtering, output gain make-up stages, HA-880 transformer-coupled op-amp output stages, six attack/release time constants, Progressive DC Threshold control, LAT/VERT mid/side operation and dual-mono/stereo operation. Manufacturer-published specifications list 15 kOhm input impedance, 50 ohm output impedance, +29 dBu output level, 20 Hz-20 kHz +/-0.5 dB frequency response, self noise less than -78 dBu and harmonic distortion below 0.5% up to +24 dBu output with no compression.