TC Electronic Spark

The TC Electronic Spark Booster is a boost pedal from TC Electronic, released April 1, 2012 at $129¹. It offers up to 26 dB of boost, which TC positioned as a tool for enhancing your existing sound and highlighting solo or rhythm parts². Beyond simple volume, it carries an active EQ and a three-way voicing toggle, so it can shape tone as well as lift it. TC's launch material described it as a pedal that injects punch, body and warmth into pickups, drives amps to peak performance and adds life, grit and tone to guitar set-ups².

The pedal sits in TC's compact pedal series, and Performer Mag's reviewer noted it shares the same overall design as TC's TonePrint pedals³. It is true bypass, which TC said ensures maximum tonal integrity when the pedal is off².

What the Spark Booster does

At its core the Spark Booster is a volume and tone lifter. The Level knob alone offers up to 26 dB of clean boost⁸, enough to push an amp harder or cut through for a solo. But the Gain knob gives it a second character: a technical analysis of the circuit found that the gain control creates soft clipping, with diodes placed in the op-amp feedback network the same way a Tube Screamer does, rather than diodes to ground⁹. That means the pedal can move from clean lift into light overdrive territory, which is why Guitar.com's boost pedal guide lists it among overdrive and distortion pedals².

MusicRadar's review found that at high gain settings it starts to add a soulful character similar to TC's MojoMojo drive⁸. The circuit is built around a dual op-amp, and the DIY community that has traced it suggests substitutes such as a 4558 or TL072 work in the circuit⁹.

The controls

The control set is four knobs and a toggle. Performer Mag's review summed it up: "Controls are simple, GAIN, LEVEL, BASS & TREBLE."³

The Bass and Treble knobs form an active EQ that TC says provides precise tonal shaping for an extended range of lows and top-end shimmer⁵. Both knobs cut as well as boost their frequencies².

The three-way mini-toggle changes the pedal's voicing. Guitar World's review described it as "a mini-toggle switch offering three settings for Fat, Clean and Mid-Boost"⁵. A circuit analysis pinned down the frequencies: the center position is flat, and the other two are a low mid boost at 185 Hz and another at 408 Hz⁹. In practical terms, TC described the Fat setting as one that fattens up sounds and adds life and punch, while the Mid-boost section provides a bump in the mids that is both musical and pronounced². Guitar World's reviewer found the Fat setting adds noticeable heft to the sound⁵.

Power: battery or 9V adaptor

The Spark Booster runs on a 9V battery or a 9V barrel adaptor⁴⁷. The battery compartment sits under a single screw in the rugged, low-profile enclosure, and Premier Guitar's reviewer noted that accessing it simply requires a coin, with a flathead screwdriver or a beercan tab doing the job too⁴.

History: from the Booster + Line Driver to the Spark Mini

The Spark Booster is not a reissue. TC's product manager Tore Mogensen described it as a modern take on the TC Electronic Booster + Line Driver & Distortion, one of the company's most popular items for guitarists in its earlier days²³. Performer Mag's review made the same point, calling the Spark Booster a pedal that revisits the Booster + Line Driver distortion in a new way³. At launch, Mogensen said the Spark Booster stood for everything TC Electronic had set out to contribute to the guitar community with drive sounds⁶.

Tore Mogensen, TC Electronic's product manager for guitar, said in the launch announcement that the Spark Booster represented the epitome of what TC Electronic had aimed to contribute to the guitar community with drive sounds⁶.

A year after the full-sized original, TC introduced the Spark Mini Booster, available August 2013¹¹¹². Guitar World's buying guide on boost pedals noted that "overstuffed pedalboards everywhere were relieved when the Mini was introduced"¹¹. The Mini combines the qualities of the original in a miniature footprint¹², but the two pedals differ in more than size:

MusicRadar's review of the Mini noted that players may miss the bass and treble controls of the full-size Spark¹⁴, but also that with PrimeTime switching, TC has provided easy versatility to give the Mini the edge over its rivals¹⁵. The Mini's circuit is described as a completely clean boost with tone enhancement under the hood once you start cranking it¹³.

A related pedal worth knowing: the Tone City All Spark, which runs on a DC 9V adapter¹⁷.

What reviewers said

Premier Guitar's review concluded that the pedal is "Transparent but versatile, with great EQ options and plenty of boost power."⁴ MusicRadar's review highlighted the same combination, noting the Level knob's 26 dB of clean boost and the soulful high-gain character reminiscent of the MojoMojo⁸. Delicious Audio's review described the toggle as adjusting the nature of the EQ from fat, clean and mid boost¹⁰.

Guitar.com's boost pedal guide grouped the Spark and Spark Mini together as some of TC Electronic's most well-regarded pedals, up there with the Ditto as long-standing standard parts of the range, and great for guitarists on a budget: "they're just reliable, loud and clean."¹⁸ That budget point shows in the pricing: the pedal launched at $129 in 2012¹, while Gearnews' 2026 boost pedal roundup listed it at $52.00¹⁹.

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