Valeton Tube Engine

The Valeton Tube Engine is a compact analog overdrive pedal from the maker's Coral series, described by Valeton as a Vintage Overdrive built around a JRC 4558 chip for what the maker calls an "original tasty tube overdriven tone"¹. It is discontinued: Valeton's own product page now marks the Tube Engine as such¹.

A vintage overdrive on a JRC 4558

The Tube Engine sits in the long line of pedals that take their cue from the Ibanez Tube Screamer. MusicRadar's reviewer Trevor Curwen wrote that "the Tube Engine Vintage Overdrive colour and name, of course, allude to the fact that it takes its cue from the Tube Screamer", and noted that it uses the same chip as a TS². The JRC 4558 is the operational amplifier chip associated with that circuit family, and Valeton names it directly as the heart of the pedal¹.

Valeton describes the pedal's sound as a "warm, creamy, organic overdrive tone"¹. Curwen put it in more concrete terms: "In use, it delivers familiar TS-808-style mild overdrive that will add a natural increase in dirt to your amp"². In other words, it is a mild, amp-friendly dirt pedal rather than a high-gain device, in the mold covered on the Overdrive Pedals page.

The Tube Engine appeared in Guitar.com's coverage of Thomann's large Tube Screamer shootout video from 2018, which gathered a wide field of TS-style pedals for comparison³.

Curwen's one reservation was that cheaper TS clones are available². The field of Tube Screamer-derived pedals is crowded: among the numerous clones, Gearnews's Bob Malkowski names "the JHS Bonsai and the Harley Benton Vintage Overdrive"⁴. Within Valeton's own range, the Coral series included two overdrive pedals with Modern or Vintage prefixes², and the maker has also offered the Valeton Tube Refiner and the Valeton BD-10.

The controls

The Tube Engine keeps a small, familiar control set, with one departure from the Tube Screamer layout: instead of a single tone knob, it splits the EQ into two².

Curwen found that the two-band EQ mattered in practice: the treble and bass knobs offer "more variability than a single-knob design, particularly in getting away from a TS's natural bass roll-off by fattening up the bottom end"². That addresses one of the common complaints about the Tube Screamer formula, where the fixed mid-humped tone stage thins out the low end.

The pedal is built in an aluminum-alloy die cast case that Valeton says is made "to withstand wear and tear", and at 175g and roughly 93mm deep by 50mm wide it is a small board-friendly unit¹. The signal path is 100% analog, and the footswitch is true bypass, so the pedal drops out of the chain entirely when switched off¹. Current consumption is listed at 15mA, light enough for any standard pedalboard supply¹.

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