Catalinbread Dirty Little Secret MKIII

About the Catalinbread Dirty Little Secret MKIII

The Catalinbread Dirty Little Secret is a Marshall-in-a-box, an overdrive and preamp voiced to sound like a cranked Marshall plexi. A mode switch flips it between Super Bass and Super Lead voicings, and a presence control plus its EQ let you dial in the creamy high-mid crunch those amps are known for. It is happiest running on 18 volts, and there is a Deluxe version with more onboard tone-shaping.

In one paragraph

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

Listings of the Catalinbread Dirty Little Secret MKIII we watched from listing to sale typically went in 38 days (14 watched), a steady; it sells for a median of €70 over the last 90 days across 18 recorded sales, with most examples landing between €65 and €75. There are 164 listings live right now across Reverb, from €58 asking, a median ask 101% over the sale median. Figures computed 17 October 2026 by Doirado from cross-platform listing data.

What owners have said elsewhere

Paraphrased from 57 discussion threads among 7 owners, 2024. No names, nothing quoted.

For the classic plexi sound, the Dirty Little Secret has a devoted following here. One owner calls it his favorite pedal outright, the box that finally gave him the Marshall tone he always wanted but could not afford, another who owns a Friedman-style pedal says he likes the DLS better, and others simply call it pretty great and tell people they will not be disappointed. The keys to getting the most from it come up repeatedly: run it at 18 volts, where owners say it is awesome, and use the Super Bass and Super Lead modes with the presence control to find that creamy plexi crunch. Like a real Marshall, it loves a boost in front, owners push it with an SD-1, a TS or an Xotic spark boost for leads. Fair warning: it is not a cheap pedal, though used ones turn up.