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Heritage Audio Tubesessor Optical Tube Compressor Demo

1-channel Optical Tube Compressor with transformer-balanced I/O, Tube Saturation Section, and Multiple Sidechain Filter Settings

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Creative Tube Optical Compression

What do you want from a compressor? There are a plethora of comps in both the hardware and software realms, all of which control dynamics effectively. But many astute, golden-eared engineers want something more — that elusive euphonic warmth and musicality imparted by certain vintage tube units. Specifically, we’re talking about those coveted opto-compressors of yesteryear that have played a huge part in shaping the sound of modern music. The Heritage Audio Tubesessor optical tube compressor brings those desirable sonic qualities to the table, efficiently and transparently controlling your levels and adding a hint of enhancement while maintaining the original sonic character of any signal you send through it. But with its amazing Tube Saturation section, the Heritage Audio Tubesessor goes way beyond the capabilities of even the most revered tube opto units.

Works wonders on mission-critical tracks

Sure, you can expect any high-quality FET or VCA compressor to deliver competent level control. But to achieve effective dynamics control and a warm, natural, and highly musical sound, we tend to favor classic tube levelers, especially those based on optical designs. The Heritage Audio Tubesessor employs a specially designed opto cell that, in addition to keeping your levels in check, offers the smooth, sweetly musical feel and “sag” that works wonders on vocals, bass, and other mission-critical tracks that can make or break your mix.

Tube Saturation: compressor as musical instrument

Need more texture and bite? No problem! The Tubesessor incorporates Heritage Audio’s Tube Saturation circuitry, which leverages a creamy-sounding new-old-stock Raytheon double triode tube to punch up signals with everything from a subtle edge to a full-on fusillade of take-no-prisoners tubular aggression. Critically, the Tube Saturation section works in concert with the custom output transformer to produce the optimal harmonic content for each of the circuit’s four modes, which range from Classic (no saturation) to Hot (extreme). It’s a blast being able to instantly switch and A/B between these settings. This innovative feature transforms the Tubesessor into much more than a compressor. Let’s just say that you haven’t lived until you hear what the Tubesessor can do with drums, guitars, and other instruments!

Multiple sidechain filter settings for enhanced processing

The Tubesessor provides a selection of five internal sidechain filter settings. Two of them ensure that compression action is not being unduly influenced by low-frequency content in the source material, while the other three are frequency-specific options for enhanced creative signal processing. Spec’d with continuously adjustable Attack and Release controls in addition to a Fixed mode, the Tubesessor provides all possible settings for shaping your signals precisely how you want them. Its large custom VU meter — selectable for Input, Output, or Gain Reduction — guarantees you’ll always be operationally status-savvy. In short: the Tubesessor gives you everything you need to achieve world-class professional recordings.

A masterful design delivers outstanding results

The Tubesessor features an all-tube amplification stage, with a vintage-spec replica input transformer by AMI and a custom all-silicon steel output transformer. The use of an audiophile-grade dual-output triode in a totem pole arrangement provides a solid output stage, while allowing much higher headroom than typical vintage or modern tube compressors. Heritage Audio also designed the Tubesessor with a higher internal operating voltage to heat up your signals, while retaining their natural character and vibe. Even with heavy amounts of gain reduction, tracks processed through the Tubesessor maintain their clarity and depth. As with Heritage Audio’s other tube offerings, the company has sourced a plentiful supply of top-drawer NOS tubes to protect your investment, ensuring many years of reliable service. The Tubesessor’s 3U front panel accommodates large knobs for easy, precise tweaking and settings recall. From the technicalities to the ergonomics, the Tubesessor is a masterful design. But then, that’s exactly what we expect from Heritage Audio.

Heritage Audio: legendary performance and epic value

Founded in 2011 by engineer/producer Peter Rodriguez, Heritage Audio immediately set about designing and manufacturing equipment inspired by legendary vintage British console modules, leveraging the same handwired, transformer-coupled Class A circuitry, with functionality aimed at today’s studio workflows. The company then turned its attention across the Atlantic with the acclaimed MotorCity EQ and the Herchild 670 and 660. Now, Heritage presents its take on another American classic with the with the Tubesessor. Designed to stringent tolerances and meticulously crafted in the company’s factory in Spain, Heritage Audio gear delivers clean, problem-free audio with generous headroom and the vintage-flavored sonics we all crave. Sweetwater is proud to offer you this distinguished line of high-performance pro audio equipment.

Heritage Audio Tubesessor Optical Tube Compressor Features:

  • Optical compression detection
  • All tube-based amplification stage
  • Fully transformer-balanced input and output
  • Tube Saturation section
  • Large, user-friendly control set
  • Extensive Attack and Release control
  • 5 Sidechain Filter settings
  • Big, informative VU meter
  • Premium NOS tubes
  • Mil-spec build quality

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Tech Specs

  • Type: Optical Tube Compressor
  • Number of Channels: Single channel
  • Controls: Gain, Threshold, Ratio, Attack, Release, Tube Saturation, SC Filter
  • Threshold: -40dB to 0dB
  • Ratio: 2:1 to 10:1
  • Frequency Response: 20Hz-20kHz (±0.15dB)
  • Inputs: 1 x XLR
  • Outputs: 1 x XLR
  • Other I/O: 1 x 1/4" (stereo link)
  • Tubes: 1 x CK5755, 1 x 12BH7A
  • Rack Spaces: 3U
  • Power Source: Standard IEC AC cable
  • Height: 5.27"
  • Depth: 6.02"
  • Width: 19"
  • Weight: 8.03 lbs.
  • Manufacturer Part Number: TUBESESSOR

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Customer Reviews

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Rated 4.5/5
I've been waiting for almost a year to get a CL1B, I wouldn't even find it used for $5K. So I made my own research and found two Engineers on Instagram that own CL1B & the Tubesessor. they sent me comparison Videos and told me don't hesitate just get the Tubesessor it's Sounding Amazing & got more Features than than CL1B. I literately sold all my Warm Audio Compressors & Preamp to get the Tubesessor.

I will put pictures down below.

I just ordered a Neve 1073SPX, next I'm getting the SSL Bus+ to put with my SSL Fusion then the Neve 5057 Orbit Summing Mixer.

In the 500 Series PowerSupply, I will add the DBX 920 DeEsser.
Music background: DJ, Producer & Engineer
Rated 4.5/5

Vocal Chain is Complete

I seriously had my eyeball on the Cl1B. This unit seems to be the better purchase for a couple of reasons:
1. Cost - self explanatory when you look up the cost of the Tubesessor vs. the CL1B. Now, that doesn't mean quality is lesser or bad. This thing outperforms its price point.
2. Features - the fact that we get to choose how to warm up the sound of signal right on the unit is incredibly handy. Paired with the flexibility of my LCT 1040, I couldn't ask for a more versatile recording chain
3. Sound - It sounds just as you'd expect a CL1B to sound - incredibly smooth, superior top end. Again, the added saturation feature sets it apart so I can get as gritty or as clean as I'd like.
4. Build Quality - Solid unit, lighter than expected, nonetheless it's still a beast.

Reactions from clients - the look of this thing is nice and attractive. New customers have booked sessions just to hear what they would sound like. Some have said that I've accomplished the best quality in the area which is tremendous as I am yet a small studio owner. Others have openly said that I'll be their new go-to for recording which I attribute to the absolute monster that is the Tubesessor.

It's really opened up new waves of possibilities in my studio and I am very happy. I've gotten a bit of feedback from other owners and they say that the Tubesessor is very sibilant, I have found that since it's such a clean sounding compressor, that would occur if someone paired a brighter mic with the unit (e.g. C-800g - or a clone, AKG414, TLM103). Since the Tubesessor has the saturation options, this issue can easily be compensated for to soften the increased top end of certain mics.

CONS - I don't have a second one haha

P.S. Sweetwater please sponsor me :p
Music background: Small Studio Owner
Rated 5/5

Great addition to my rack!

I only received the Tubesessor today, so I'll want more time and space with it. That said, I've curated my rack gear over the past few years to create a bit of a vintage sound, and I already hear that the a Tubesessor is a great addition to my Chandler Limited, API, Heritage Audio, SPL, and other gear. After getting it in the rack, I ran a few female vocal and bass recordings through it with the Heritage Audio Motorcity EQ (vox) and Lang PEQ (bass). I'm really impressed. Yes, it's a compressor and serves that function well…the sculpting the compressor does is truly nice. The side chain filter was really effective in dialing in the sound I wanted. The choices for tube saturation can be pushed a bit to far in combination with the gain control lol, but I imagine it would work nicely adding harmonics and saturation when needed. It's a beautiful unit and does what it should, while imparting a subtle (when wanted) sound. I'm already thinking this could be a desert island compressor.
Music background: Recording engineer, studio owner, musician.
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