Heritage Audio OT-4 V2.0 500-frame

General

Not everyone needs ten 500-slot units straight away. The Heritage Audio OST-4 V2.0 brings exactly the same philosophy as its big brother (the OST-10) to a more compact, affordable 4-slot format. This is ideal if you’re just starting out with 500-series modules or simply don’t need any more space than this. Each of the four slots has its own individually regulated and isolated power supply, rather than the shared, parallel power supply used by most racks in this price range. This means no more brown-outs as soon as you plug in a power-hungry Class A or valve module, no crosstalk between channels, and – specifically for mic preamps – often even lower self-noise and better performance than the same module in a standard rack. For anyone looking for a compact, reliable home for their first (or next) handful of 500-series modules, without the power supply itself becoming the weak link. Just enough space to get started, or to bring together a carefully selected range of preamps, EQs and compressors without having to fill ten slots straight away.