Heritage Audio HERCHILD Next Gen Model 670N - True Vari-MU for Modern Studios
The Heritage Audio HERCHILD Next Gen Model 670N is a 5U dual-channel Vari-MU compressor that delivers the legendary Fairchild 670 sound at a fraction of the cost. Powered by four NOS military-grade 6BA6 tubes and six custom transformers, it preserves the rich, warm tone of the original while adding modern features like independent bypass, advanced side-chain filtering, LAT/VERT Mid-Side mode, and an ultra-clean transformer-coupled output stage. Hand-built in Madrid, the Next Gen 670N brings authentic tube compression to every studio with stepped controls for instant recall and unmatched flexibility.
Classic Fairchild Soul
Four NOS 6BA6 pentodes and meticulously designed transformers recreate the unmistakable glue, warmth, and harmonic richness of the Fairchild 670. The progressive DC Threshold combines ratio and knee control for everything from transparent levelling to hard limiting, while six carefully chosen attack/release times adapt the classic sound to contemporary production demands.
Modern Production Features
Independent bypass per channel, advanced side-chain high-pass filtering, and LAT/VERT Mid-Side processing expand creative possibilities. The transformer-coupled output stage, based on Heritage Audio’s revered HA-880 op-amp, provides clean gain make-up without altering the Vari-MU character. Dual-mono or true stereo operation, plus stepped controls throughout, ensure precise settings and easy recall.
Key Features of the HERCHILD Next Gen Model 670N
- True Vari-MU compression with 4 NOS 6BA6 tubes and 6 custom transformers
- 6 attack/release times optimized for modern music
- Progressive DC Threshold for variable ratio and knee
- Advanced side-chain high-pass filtering
- LAT/VERT mode for Mid-Side processing
- Dual-mono or stereo-linked operation
- Independent bypass and output gain make-up per channel
- Stepped controls for precise recall
- Clean transformer-coupled output stage
- Hand-built in Madrid, Spain
Technical Specifications
- Type: Dual-channel tube Vari-MU compressor
- Tubes: 4 × NOS 6BA6 pentodes
- Transformers: 6 custom (input, interstage, output)
- Attack Times: 6 settings (optimized)
- Release Times: 6 settings (optimized)
- Threshold: Progressive DC control (ratio + knee)
- Sidechain Filter: High-pass (variable)
- Mid-Side: LAT/VERT mode
- Output Gain: Clean transformer-coupled make-up
- Dimensions: 5U rackmount
- Construction: Hand-wired in Spain
