The Gigahearts Trés Bull is a tone enhancer that combines a 3-way RangeMaster-style treble booster with a lower-mids beefy boost, a pickup simulator and a ± impedance adjustment1. It is a boost pedal in the sense of the Boost Pedals family, but it does more than one job: the two boosts can run on their own or together, sharpening attack, adding beef, or creating low-to-mid gain overdrive that edges toward the Overdrive Pedals territory1.
Controls
| Control | What it does |
|---|---|
| Lower Mids Boost | Beefy / phat boost on the left of the pedal1 |
| Treble Boost | Horns / extra bite boost on the right1 |
| Pickup Simulator | On/Off switch, works with the impedance trimmer1 |
| Impedance ± | Adjust sharpness or dampen1 |
| Range (EQ Focus + Gain) | Three positions: left is fattest and loudest, middle is thinnest and quietest, third is middling and moderate1 |
Two footswitches sit under those controls: the left one for the mids boost and the right one for the treble boost, so each side can be switched on its own1.
The two boosts
The right-hand side is essentially a 3-way RangeMaster / Treble Booster, the classic treble boost format, with the Range switch setting its EQ focus and gain1. The left-hand side is a lower-mids beefy boost covering a circa 150Hz to 800Hz range, with an emphasis or peak around 250 to 400Hz1.
Run together, the two sides make what the review calls a Full-Range Boost, and the combination can also push into low-to-mid gain overdrive1.
Pickup simulator and impedance
The pickup simulator works in conjunction with a ± impedance refinement trimmer. Guitar Pedal X's review explains its purpose: "The Pickup Simulator is there so you can deploy the Trés Bull in a variety of positions on your board"1. In practice that means the pedal is not tied to sitting straight after the guitar; the impedance control lets you adjust sharpness or dampen the input to suit where it sits in the chain1.
What reviewers said
Guitar Pedal X's Stefan Karlsson reviewed the Trés Bull in April 2026 and came away calling it "a supremely handy tone-enhancer - which can sit in a variety of positions on your board - and massively" enhance gain pedals, describing it overall as "a fantastic versatile Tone Component combining EQ and Boost smartly"1.
The price given for the Trés Bull is £135 GBP as of the April 2026 review1. It is quoted in pounds sterling as stated by the reviewer.
Videos
GIGAHEARTS FX
Questions
Can the Gigahearts Trés Bull run both boosts at the same time?
Yes. The two footswitches control the lower-mids boost and the treble boost independently, and Guitar Pedal X's review notes that the boosts work independently or together for a full-range boost, sharpening attack, adding beef, or creating low-to-mid gain overdrive.
What does the pickup simulator on the Trés Bull do?
The pickup simulator works in conjunction with a ± impedance refinement trimmer. According to Guitar Pedal X's review, it is there so the Trés Bull can be deployed in a variety of positions on a pedalboard, depending on what comes before it in the signal chain.
How much current does the Gigahearts Trés Bull draw?
Guitar Pedal X's review gives the current draw as just 6mA, which is low enough to sit comfortably on most pedalboard power supplies.
What does the Range switch do on the Trés Bull?
The Range switch sets the EQ focus and gain of the treble boost side across three positions: the left is described as the fattest and loudest, the middle as the thinnest and quietest, and the third as middling and moderate.
Sources (1)
- Guitar Pedal X, Guitar Pedal X, 2026-04-24