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Heritage Audio OST-6 v2.0 6-slot 500 Series Enclosure

6-slot, Rackmountable 500 Series Chassis with On-slot Technology
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Item ID: OST6MK2
Heritage Audio OST-6 v2.0 6-slot 500 Series Enclosure
Price:$599 and 00 cents
Special Financing - Ends Jun 30, 2026. $13/month with 48 month financing*

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Heritage Audio OST-6 v2.0 6-slot 500 Series Enclosure
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Price:$599 and 00 cents
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A Feature-laden 500 Series Chassis

The Heritage Audio OST-6 v2.0 is a 6-slot, rackmountable 500 Series enclosure. This chassis accommodates 500 Series modules of all shapes and sizes, including double-wide modules and power-starved Class A and vacuum-tube-fueled designs. The OST-6 v2.0 boasts Heritage Audio’s On Slot Technology, which individually regulates, filters, and protects each channel for maximum performance, low noise, and steadfast reliability. This enclosure delivers up to 400mA per slot, or a total of 1.8A per rail, with up to 140mA of phantom power. You can also link each channel to the next with a push of a button — no patch cables required. The OST-6 v2.0 features a heavy-gauge steel housing with a durable finish and a convenient metal handle for easy transport.

Features Heritage Audio’s On Slot Technology

The OST-6 v2.0 includes Heritage Audio’s On Slot Technology, which facilitates maximum protection, filtering, and isolation for each channel. Each of this 500 Series enclosure’s six slots boasts its own independent power supply, which is individually regulated and isolated. Thanks to this revolutionary design, every 500 Series module installed in the OST-6 v2.0 will deliver peak performance. Beyond that, power-hungry — and even faulty — modules won’t compromise the performance of the rest. Here at Sweetwater, we’ve found that many of our 500 Series modules exhibit lower self-noise with the OST-6 v2.0, especially microphone preamps.

Heritage Audio OST-6 v2.0 500 Series Enclosure Features:

  • 6-slot, rackmountable 500 Series enclosure
  • Accommodates double-wide modules, plus power-starved Class A and vacuum-tube-fueled designs
  • On Slot Technology individually regulates, filters, and protects each channel for maximum performance, low noise, and steadfast reliability
  • Delivers up to 400mA per slot, or a total of 1.8A per rail, whichever is reached first
  • Provides up to 140mA of phantom power
  • Links each channel to the next with a push of a button — no patch cables required
  • Rugged, heavy-gauge steel housing with a durable finish
  • Detachable rack ears and all-metal handle for easy transport

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Tech Specs

  • Number of Slots: 6
  • Inputs: 6 x XLR
  • Outputs: 6 x XLR
  • Module Power: 1.8A per rail, 400mA per rail per slot
  • Power Supply: External HA-PSU02 power supply (included)
  • Manufacturer Part Number: HAOST6V2

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Reviews

Great!
You'd have to be a real dummy to not love this thing. Better than 99% or racks , more power and better design than neve and nearly everything else. This and Wesaudio and black lion racks (same tech) are the only racks a pro should use.
disappointing
The day I got the chassis I plugged everything up for quick test which I do with every new piece of gear I get and immediately noticed a high-pitched hum coming from the machine, not thinking much of it I go to record and hear the hum seeping into the monitoring, now me thinking maybe the chassis is just loud I run a gate to get rid of the background noise but no luck. Now at this point I'm just trouble suiting the issue trying to figure out what's wrong, I plugged into many different outlets on my conditioners and still, got to the point where I put my mic stand in an empty closet to test the ground level noise and that's when I realized the hum of the chassis and its power supply was leaking into the pre's, at this point it's definitely getting returned and I'm for sure going with a neve due to high customer reviews and advice from someone at Sweetwater. luckily this company has great return service and has already helped me out, but I thought I'd give this review for the ones willing to try something new and test different brands, stick to what people know is good. Out of all the things I've tested and returned or sold out of just trying something out this has got to be the most disappointing, not even one song from this piece, again stick to the gear people rave about, there's a reason for it

on another note, this chassis has the best design I've seen in most brands and the fact that it's so barebones is why I got it, the OST4 and 6 are beautiful in size and the ability to link slots with a button in the back is supreme. In the end, that's just looks and cable management. I need performance.