Silvertone Twin Trem

The Silvertone Twin Trem is a dual analog tremolo pedal that puts two complete tremolo circuits in one enclosure: a fully functioning optical tremolo circuit on the left side and a fully functional harmonic tremolo on the right¹. It is made by Jackson Audio in collaboration with Silvertone, and it is the second pedal the two companies have built together, after the 1484 Twin Twelve, a pedal preamp version of the legendary Silvertone 1484 amp¹². These are not digital recreations; the circuits are all-analog¹.

The appeal for a player is flexibility. Each tremolo has its own controls, its own footswitch and its own input and output jacks, so the two effects can be used separately, together in series, or even split into different parts of a signal chain¹³.

Optical and harmonic tremolo in one analog pedal

The two circuits work differently, and that difference is the point of the pedal¹³⁵.

• Optical tremolo (BLUE, left side): the classic approach, changing the overall volume of the guitar in a repeating pulse. At its slowest speed setting, the optical side cycles through minimum and maximum volume in just a little under a full second, which Premier Guitar's reviewer noted is slower than the equivalent speeds on amplifier tremolos⁵⁶.
• Harmonic tremolo (RED, right side): a different kind of tremolo, initially developed in Fender "brown face" amps, that alternately changes the volume of bass and treble frequencies rather than the whole signal⁷. In the Twin Trem's circuit, high and low frequency bands are split and volume-attenuated out of phase from each other⁶. Jackson Audio describes the result as "Warm, dimensional movement that shifts between frequency bands and moves around your playing."⁴

Because each circuit has its own jacks, the two tremolos can be separated, or another effect can be placed between them. Jackson Audio's own example is putting a reverb between the harmonic and optical sides⁴. Delicious Audio describes the pedal as a dual tremolo stompbox with two parallel Optical and Harmonic circuits, with independent inputs and outputs allowing a variety of routing, including stereo configurations or split chains³.

The pedal sits in the same robust metal chassis as the Twin Twelve¹.

The controls, footswitches and jacks

Each side of the pedal is operated by its own three-knob array: speed, depth, and a smaller volume knob that boosts or cuts the output of that individual circuit⁶. Guitar.com's review describes the same layout, with separate speed and depth controls for each effect plus a mini-knob for the volume of each¹.

Two details make the pedal easy to read on a dark stage. The volume knobs are illuminated, blue on one side and red on the other, and they fade in and out to visually indicate the speed of each circuit³. And a single status LED uses three colors: red for harmonic, blue for optical, and purple when both are on¹.

The independent input and output jacks for each circuit sit on the top of the pedal, so you can fit the two tremolos into your chain independently if you want to¹.

What reviewers said

Guitar.com's Eric Dahl reviewed the Twin Trem in March 2025 and gave it a 10/10 rating, writing¹:

Premier Guitar's reviewer, in a January 2025 review, described the pedal as just short of 300 bucks and walked through how each circuit operates⁶. Guitar Pedal X, reporting on the November 2024 announcement, found the $299 pricing about right, while noting the writer would have felt it better justified at $249 or $279².

Who makes it, and what it costs

The Twin Trem is made by Jackson Audio and designed in collaboration with Silvertone⁴². It follows the pair's earlier 1484 Twin Twelve tremolo/amp combo pedal, a pedal preamp version of the 1484 amp¹³. Jackson Audio lists a shipping lead time of 3 to 4 weeks on its product page⁴.

The list price is $299 in the US, announced in November 2024¹ and still quoted at $299 in the March 2025 guitar.com review, which also listed it at £249 in the UK¹.

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