The JPTR FX Silvermachine is a dual-gain-stage fuzz pedal from German builder JPTR FX. Its two gain stages run in a parallel circuit, each with its own gain control, feeding a shared master volume. The maker positions it as a pedal that "pays homage to the classic fuzz circuits of the past while offering a modern take on the sound"1.
Where a classic Fuzz Face or Tone Bender stacks its gain in series, the Silvermachine splits the job across two parallel stages. Delicious Audio's Paolo De Gregorio described the result as carrying "tones between Benders and Faces, but infinitely less compressed and deliberately open in character"2.
Two gain stages, one fuzz
The core of the pedal is its pair of interactive gain filters. JPTR FX says they allow "everything from low-gain sizzle to beefy 'Bender' tones and screaming 'Octafuzz' sounds"1. In practice, the two smaller knobs each control one gain stage, and they interact rather than working independently: the gain controls also act as filters, so the pedal's character shifts depending on how the two stages are balanced against each other2.
The shared master volume sits after the two stages. JPTR FX describes it as a way to "fine-tune the output volume to perfectly match your amp's front-end"1.
| Control | What it does |
|---|---|
| Gain 1 and Gain 2 | Interactive gain filters for the two parallel gain stages; each also acts as a tone filter, from sizzling drives to rich, dynamic fuzz2 |
| Master volume | Shared output control for both stages, matched to the amp's front-end1 |
| Internal filter switches | Reduce high-frequency output in three steps1 |
How it compares with a Fuzz Face or Tone Bender
The Silvermachine's lineage is audible but not literal. De Gregorio called it "a solo-style fuzz that only works well with single notes, and that, at different settings, can deliver tones reminiscent of both the Fuzz Face and the Tone Bender, but more extreme, more open and less compressed, with a hint of upper octave"2. Pushing the gain stages further brings out that upper octave, which is where the "Octafuzz" end of the maker's range comes from2.
A useful comparison is the ThorpyFX Veteran V2 [Si], which takes a more literal approach to the same territory: a silicon Fuzz Face-style fuzz paired with a Rangemaster-style treble booster in one box3. The Veteran follows the classic circuits closely, while the Silvermachine reworks the idea into a parallel, more open design.
"Its versatility carries tones between Benders and Faces, but infinitely less compressed and deliberately open in character."
Chords, and the internal filter switches
The pedal's open, extreme character comes with a trade-off: it is built for single-note soloing rather than chord work2. For players who want to tame the top end, the inside of the pedal holds filter switches that reduce high-frequency output in three steps, which JPTR FX presents as a way to dial the fuzz in further1.
V1 and V2: from a large case to a compact one
The Silvermachine has been through one redesign. The original V1 lived in what De Gregorio described as "a (huge) vintage-looking silvery case," a fitting home for a pedal named after the Hawkwind album. In 2022 the V2 arrived with the same circuit embedded in a compact case matching the rest of the JPTR FX line2. JPTR FX frames the current version as a response to demand: "we've taken one of our most in-demand pedals and meticulously redesigned it"1.
The move from a large enclosure to a compact one is a common path for boutique fuzzes. The JHS Unicorn V2, the ThorpyFX Veteran V2 [Si] and Champion Leccy's Kilter V2 all made the same shrink from their first versions, so the Silvermachine V2 follows a familiar pattern in the boutique pedal world435.
Who makes it, and how to get one
JPTR FX describes the Silvermachine as a pedal that pays homage to the classic fuzz circuits of the past while offering a modern take on the sound1. Its interactive gain filters allow for everything from low-gain sizzle to beefy "Bender" tones and screaming "Octafuzz" sounds1, and a master volume control lets you fine-tune the output volume to match your amp's front-end1.
Videos
JPTR FX
EytschPi42
Leigh Fuge
News
Questions
Is the JPTR FX Silvermachine buffered?
No. The Silvermachine is an unbuffered fuzz, part of what gives it its vintage, unrefined character. Like other unbuffered vintage-style fuzzes, it is sensitive to what comes before it in the signal chain, so placing it early on the pedalboard, before buffers, tends to work best.
Where is the JPTR FX Silvermachine made?
It is built in Germany by JPTR FX, a pedal company founded by Chris Jupiter (Christian Lessenich) in 2016. The company produces every model in batches and sells directly to players rather than through retailers.
Does the Silvermachine work well with chords?
Not particularly. Reviewers describe it as a solo-style fuzz that works best with single notes. At different settings it can deliver tones reminiscent of the Fuzz Face and Tone Bender, but more extreme, more open and less compressed, with a hint of upper octave when the gain stages are pushed.
How much does the JPTR FX Silvermachine cost?
The maker lists it at £100.00 GBP, taxes included, sold directly through the JPTR FX website. Because the company builds in batches, delivery can take some time after ordering.
Sources (5)
- JPTR FX Silvermachine, JPTR FX
- JPTR FX Silvermachine Fuzz V2, Delicious Audio, 2022-10-05
- Veteran V2 Si by ThorpyFX, RockBoard PedalPedia, 2026
- [UNICORN V2
- the Kilter V2, Champion Leccy, Champion Leccy, 2020-11-24
