Heritage Audio Herchild 670N NEXT GEN

The Heritage Audio HERCHILD Next Gen Model 670N is a five-unit rack Vari-Mu compressor from Heritage Audio that combines authentic Fairchild 670 circuitry with modern studio refinements, using NOS 6BA6 tubes, six custom transformers and advanced control flexibility.

A Next-Generation Fairchild for Modern Studios

Heritage Audio designed the HERCHILD Next Gen Model 670N to capture the unmistakable Fairchild 670 sound while adding powerful new features that suit contemporary workflows. The brand distilled years of research from the HERCHILD 660 and 670 recreations, as well as the GRANDCHILD 670/500, into a unit that delivers the tone of the revered original without the limitations of vintage hardware or the constraints of the 500-series format. Engineers gain instant access to stepped controls for every parameter, a refined output gain stage based on the HA-880 transformer-coupled op amp and a continuity of Vari-Mu behaviour that stays consistent across both channels.

Vintage Soul with Modern Control

The Model 670N uses four NOS military-grade 6BA6 tubes and six newly designed custom transformers to generate the rich, saturated warmth expected from a true Fairchild-type compressor. Heritage Audio rethought the attack and release timings to suit today’s productions, providing six carefully chosen options for each that allow tight control, subtle musical movement or fast, authoritative dynamics shaping. The progressive DC Threshold control links ratio and knee into one continuous operation, shifting seamlessly from hard limiting to transparent compression without compromising tone.

Built for Real-World Production Needs

Heritage Audio paid particular attention to real-world workflows by integrating independent bypass switches for each channel, comprehensive side-chain filtering for frequency-conscious compression and a transformer-balanced output make-up gain stage that adds level without altering the underlying sonic character. LAT/VERT mode enables authentic mid/side processing, and the unit runs in stereo or dual mono to suit tracking, mix bus work and mastering chains. The robust construction guarantees longevity and gives the unit a visual presence that stands out in any professional rack.

Accessible Power for Professionals

The HERCHILD Next Gen Model 670N provides the sonic authority of the HERCHILD 670 while offering 150 percent more functionality at a fraction of the price. Heritage Audio designed it for engineers who demand character, precision and reliability but who also work within real-world budgets. The 670N gives studios of all sizes an opportunity to harness the sound that has shaped generations of top-charting records with the dependability and flexibility required in modern production environments.

Why Choose the HERCHILD Next Gen Model 670N

• Enjoy the unmistakable Fairchild tone without the high cost or maintenance of the original

• Shape mixes with modern controls that give more precision, flexibility and speed

• Add analogue weight and musicality to buses, stems and masters

• Work confidently with stepped controls ideal for repeatable professional workflows

• Integrate into any setup thanks to stereo, dual mono and true mid/side processing

• Keep creative control with independent bypass, advanced side-chain filtering and output make-up gain

• Rely on a hand-built, transformer-rich design engineered for long-term studio use

• 5U Vari-Mu compressor using four NOS 6BA6 tubes
• Six custom-designed transformers for authentic analogue tone
• Stepped controls for every parameter
• Progressive DC Threshold with continuously variable slope
• Six attack and six release settings tailored for modern production
• HA-880 transformer-coupled output gain make-up stage
• Independent bypass for each channel
• Advanced side-chain filtering
• LAT/VERT mode for true mid/side processing
• Dual mono and stereo operation
• Clean, robust design hand-built in Madrid, Spain

This item, like everything we supply, comes with the complete support of our expert team. Our excellent technicians have been specifying, building and supporting studios for over twenty years. If you have any problems with installation, setup or everyday use, they’re never more than a click away, and always happy to help.

You can contact them here.