Universal Audio Ruby

About the Universal Audio Ruby

The Universal Audio UAFX Ruby is an amp-and-cab emulator pedal modeling a 1963 Vox AC30 Top Boost, with a built-in tremolo. It is meant to be used in place of an amp, running into a PA, an interface or a monitor, and it has no internal power amp so it cannot drive a cab on its own. Its onboard cab IRs can be switched off to run it as a preamp into a real amp's effects return.

In one paragraph

The page's figures as one paragraph, assembled for quoting; not written by hand.

Listings of the Universal Audio Ruby we watched from listing to sale typically went in 17 days (31 watched), a steady; it sells for a median of €180 over the last 90 days across 64 recorded sales, with most examples landing between €170 and €190. There are 146 listings live right now across Reverb, from €168 asking, a median ask 97% over the sale median. Figures computed 18 October 2026 by Doirado from cross-platform listing data.

What owners have said elsewhere

Paraphrased from 52 discussion threads among 8 owners, 2024-2025. No names, nothing quoted.

Owners are enthusiastic about the Ruby, calling it seriously good and a highly recommended dedicated Vox sim, with one saying it beats a Kemper for that AC30 chime and others noting it has no perceptible latency alongside a real amp. It behaves like an amp: it takes pedals well and cleans up beautifully off the guitar volume, going from chimey clean to fuzz just by rolling the pot. It is built to replace an amp into a PA or interface, but owners also turn the cab sim off and four-cable-method it as a preamp into a real amp. It is part of the UAFX amp pedal line alongside the Marshall-style Lion and the tweed Woodrow, and the built-in tremolo gets singled out as a keeper.