Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated .

Sweetwater
3.5 (1)
$419.00
Amazon
5.0 (3)
$419.00
Reverb
5.0 (1)
$419.00 New
$300.00 Used
Thomann
4.7 (37)
$358.00 $349.00 $9.00 · All time low
Vintage King
4.0 (3)
$419.00

Average Price: $398

Budget/Beginner

$599

$2000+

Price Tier

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Standard

High-end

Price History

Based on price data from 6 merchants for "Heritage Audio OST-4 V2.0 4-Slot 500 Series Frame". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

The Heritage Audio OST-4 V2.0 4-Slot 500 Series Frame is a powerhouse of innovation for your studio setup. Designed to house up to four 500 Series modules, this robust chassis doesn't just hold your gear—it optimizes it. Thanks to Heritage Audio’s On Slot Technology, each slot is equipped with its own linear power-supply regulation stage. This design ensures that all modules are isolated from one another, preventing power-hungry modules from compromising the performance of others. Say goodbye to the common issues of shared power systems, as this chassis provides the cleanest power delivery for peak performance.

One standout feature of the OST-4 V2.0 is the Link feature, which allows seamless channel linking at the touch of a button, eliminating the need for patch cables. Whether you're working with double-wide modules or demanding Class A and vacuum tube designs, this enclosure is built to handle it all with ease. Its rugged, heavy-gauge steel construction and aluminum front panel ensure durability without breaking the bank, making it an ideal choice for both professional and home studios.

Key Features:

  • Accommodates up to four 500 Series modules
  • On Slot Technology for per-slot power handling
  • Maximum current: 1.6A per rail, or 400mA per rail per slot
  • Link feature for channel linking without patch cables
  • 140mA maximum phantom power current
  • Heavy-gauge steel construction with an aluminum front panel
  • Universal operating voltage: 100–240VAC

Product specs

Number of Slots 4
Inputs 4 x XLR
Outputs 4 x XLR
Module Power 1.6A per rail, 400mA per rail per slot
Power Supply External HA-PSU02 power supply (included)

FAQs

How many modules can the Heritage Audio OST-4 V2.0 4-Slot 500 Series Frame accommodate?

The Heritage Audio OST-4 V2.0 can accommodate up to four 500 Series modules, making it a compact and efficient choice for smaller studio setups.

What type of power supply does the Heritage Audio OST-4 V2.0 require?

The Heritage Audio OST-4 V2.0 requires an external HA-PSU02 power supply, which is included with the unit, ensuring reliable performance and consistent power delivery.

What are the input and output connections for the Heritage Audio OST-4 V2.0?

The Heritage Audio OST-4 V2.0 features 4 XLR inputs and 4 XLR outputs, providing balanced connections for professional audio applications.

What is the power capacity per slot in the Heritage Audio OST-4 V2.0?

Each slot in the Heritage Audio OST-4 V2.0 can deliver up to 400mA per rail, offering sufficient power for a wide range of 500 Series modules.

Is the Heritage Audio OST-4 V2.0 suitable for mobile recording setups?

Yes, the compact design and external power supply of the Heritage Audio OST-4 V2.0 make it a convenient option for mobile recording rigs where space and portability are important.

Heritage Audio

Heritage Audio

Heritage Audio - OST-4 v2.0 500 Series Connections & Features

Video thumbnail for Heritage Audio - OST-4 v2.0 500 Series Connections & Features by Heritage Audio

Heritage Audio - OST-4 v2.0 500 Series Connections & Features

Heritage Audio

Heritage Audio

Video thumbnail for Heritage Audio - Unboxing the OST 4 v2.0 500 series by Heritage Audio

Heritage Audio - Unboxing the OST 4 v2.0 500 series

Heritage Audio

Heritage Audio

Video thumbnail for Heritage Audio - Introducing the OST 4 v2.0 500 series by Heritage Audio

Heritage Audio - Introducing the OST 4 v2.0 500 series

Heritage Audio

Heritage Audio

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Heritage Audio OST-4 V2.0 4-Slot 500 Series Frame.

Build quality

  • Owners note that the OST-4 V2.0 offers solid power distribution, ensuring all slots function reliably even when used portably.

    Source

Use cases and applications

  • The OST-4 V2.0 is favored for travel, allowing users to maintain consistent signal chains and bus processing when working in different studio environments.

    Source

Features and functionality

  • Despite its compact size, the OST-4 V2.0 is described as robust and suitable for both preamps and bus processing, meeting expectations for portable 500 series chassis.

    Source

Based on 0 Reviews and 0 Ratings

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