Heritage Audio Tubesessor Optical Tube Compressor

The optical tube compressor for when you absolutely need the sweetest, warmest most natural dynamic control possible, but also want the ability to spice it up on occasion.



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SKU: HERTUBESESSOR Categories: , Tag Brand:


Always excited to see just how they can improve on and expand the functions of a classic, Heritage Audio has decided to produce an optical tube compressor. It is well known that tube compression, especially that based on an optical design, is generally considered to be warmer than VCA and FET designs, and it tends to provide a very pleasant, more natural, smoother result. This has made it the preferred choice for seasoned engineers and producers that want to provide a very transparent control over a signal while offering a hint of enhancement but keeping true to the original tone. For this very reason, optical tube compressors are usually the first thing one reaches for when dealing with critical vocals and bass signals. The TUBESESSOR is the perfect option for this.

Analog excellence is achieved by combining an all tube-based amplification stage with an outstanding UTC A10 input transformer replica by AMI, as well as a custom all-silicon steel output transformer. With an elevated internal operating voltage, you can be sure the TUBESESSOR will heat up any signal while also maintaining its character and vibe. No starved plate circuits here!  Never has dynamics control been so easily obtainable while at the same time so invisible. Even with generous amounts of gain reduction being applied anything processed with the TUBESESSOR still maintains its clarity and depth.  

Thanks to the TUBESESSOR´S three-unit high front panel, you´ll find plenty of room to adjust the large Herchild-style knobs, making it a breeze to achieve the desired sound. No cramped spaces here, just plenty of space to easily and quickly adjust the settings to taste.  The only bad thing about this is that you´ll dread returning to a confined one-space unit much less a tiny 500 series module. In this case, size does matter…

Now, we all know it would not be a Heritage Audio product without our expertise and passion channeled into a couple key features that take the TUBESESSOR to another dimension.

First of all, for those times when a bit more texture and bite is called for, there’s nothing better than a little saturation…or maybe a lot. The innovative TUBE SATURATION section takes full advantage of a creamy-sounding NOS Raytheon double triode tube to add in just a pinch of aggression or fully transform the signal into something ready for war. It, importantly, works in tandem with the custom output transformer to produce the right harmonic content. There are 4 available settings that vary from CLASSIC, no saturation, all the way to HOT, a heavily treated signal. This feature alone opens up a ton of possibilities for drums and other instruments vastly expanding the TUBESESSOR´S uses. And thanks to Heritage Audio´s use of an audiophile-grade Psvane dual output triode in a totem pole configuration, a solid output stage is guaranteed all while allowing much higher headroom than other tube compressors, whether vintage or modern. 

Secondly, there are also five internal sidechain filter settings to choose from. This is the exact same filter section that helped the SUCCESSOR obtain its legendary status. Two of the options make sure the compressor is not being unfairly overpowered by lower frequencies and the other three are frequency-specific options for extra creativity.

Continuously adjustable ATTACK & RELEASE controls in addition to a FIXED mode and a combination of the two will provide all the necessary settings possible, allowing you to mold your signal exactly as you´d like. A huge, attractive custom VU meter for monitoring either Input, Output or Gain Reduction guarantees you´ll always be informed with a clear reading of exactly what is happening. Everything you could possibly require to achieve a top-notch professional recording.

As is the case with other tube offerings from Heritage Audio, the company has sourced NOS tubes for a lifetime, making sure your investment is safe and sound.


  • Optical Compression Detection
  • All Tube-Based Amplification Stage
  • Fully Transformer Balanced Input & Output
  • Tube Saturation Section
  • Large Friendly Interface
  • Extensive Attack & Release Control
  • 5 Built-In Sidechain Filtering Options
  • Huge Informative VU Meter
  • Built Like A Tank

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On qualifying purchases made with your Westlake Pro credit card. Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 12 Months. Minimum monthly payments required.

**No interest will be charged on the promo purchase if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo purchase from the purchase date. The required minimum monthly payments may or may not pay off the promo purchase by the end of the promo period. Regular account terms apply to non-promo purchases and, after the promo period ends, to the remaining promo balance. For new accounts: Purchase APR is 29.99%. Minimum interest charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

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