The JAM Pedals Harmonious Monk MK1 is a Jam Pedals tremolo pedal, currently around $277.78. Close alternatives include the Audiocade 1974 Colorsound Tremolo Clone and the JHS 3 Series Harmonic Tremolo. It pairs well with the Marshall Plexi 1959SLP and the Dumble Overdrive Special Amp Head.
JAM Pedals Harmonious Monk MK1
Jam Pedals · pedal
The JAM Pedals Harmonious Monk MK1 is a harmonic tremolo pedal, the original version in the line, offering two selectable LFO waveshapes and three internal EQ trimmers for tonal adjustment. As the first-generation circuit, it predates the MK2's added Tap Tempo, Ramp function, third waveshape option, and dedicated input-gain trimmer, delivering the foundational harmonic tremolo character the series is built on, though some players noted it could subtly color the guitar's base tone by boosting certain frequencies.
What stands out
“Primary use case is swirling, dimensional harmonic tremolo for surf, psychedelic, and atmospheric tones”
— from the community notes
“As the first-generation circuit, it predates the MK2's added Tap Tempo, Ramp function, third waveshape option, and dedicated input-gain trimmer, delivering the foundational harmonic tremolo character the series is built on, though some play…”
— from the listing
“The JAM Pedals Harmonious Monk MK1 is a harmonic tremolo pedal, the original version in the line, offering two selectable LFO waveshapes and three internal EQ trimmers for tonal adjustment”
— from the listing
“Valued as the original version of a highly regarded harmonic tremolo circuit, appealing to players who want the foundational Harmonious Monk voicing or find the MK1's feature set sufficient”
— from the community notes
“Two LFO waveshape options give solid tremolo variety, though one fewer than the MK2's three-waveshape selection”
— from the reviews
- harmonic
- tremolo
- atmospheric tones
- bypass
- psychedelic
- surf
- mk2
- three internal eq trimmers
Price updated Oct 23, 2026
Genres the JAM Pedals Harmonious Monk MK1 is commonly used in
- Classic Rock
Amps that pair well with the JAM Pedals Harmonious Monk MK1
Marshall Plexi 1959SLP
amplifier
18% matchInto the 1959SLP's aggressive plexi saturation, the Harmonious Monk's atmospheric tremolo adds pulsing motion on top of the amp's own drive.
Comes later in the signal chain
Dumble Overdrive Special Amp Head
Dumble
16% matchThe Harmonious Monk's atmospheric, harmonic tremolo pulse finds a genuinely legendary home in the Dumble's responsive, transformer-driven blues breakup.
Comes later in the signal chain
Gallien-Krueger MB108
Gallien Krueger
7% matchKeep JAM Pedals Harmonious Monk MK1 after Gallien-Krueger MB108 in the signal chain, clear of Gallien-Krueger MB108's own gain stage
Comes later in the signal chain
Pedals that stack with the JAM Pedals Harmonious Monk MK1
Klon Centaur
Klon
17% matchThe Harmonious Monk's harmonic tremolo pulse doesn't stack gain with the Klon Centaur — run it after the Centaur's midrange breakup for atmospheric chop instead.
Comes earlier in the signal chain
Dallas Rangemaster Treble Booster
Dallas
14% matchThe Harmonious Monk's atmospheric, harmonic tremolo pulse doesn't stack gain with the Rangemaster's treble boost — it just rides on top of the brighter signal.
Comes earlier in the signal chain
Fender Full Moon
Fender
12% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → lush)
Keep JAM Pedals Harmonious Monk MK1 after Fender Full Moon in the signal chain, clear of Fender Full Moon's own gain stage
Comes earlier in the signal chain
Electro-Harmonix XO Deluxe Memory Man
Electro-Harmonix
10% matchThe Harmonious Monk's atmospheric, harmonic tremolo pulse feeds the Memory Man's lush analog echo a rhythmic signal to trail off. — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Empress Echosystem
Empress
9% matchPut Empress Echosystem after JAM Pedals Harmonious Monk MK1 in the signal chain, where it won't crowd JAM Pedals Harmonious Monk MK1 — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Cheaper alternatives
EarthQuaker Devices Night Wire
EarthQuaker Devices
64% similarityShared character: tremolo
Universal Audio Flow Tremolo
Universal Audio
59% similarityShared character: true bypass, tremolo
Spaceman Delta II Cadet: Harmonic Tremolo
Spaceman
55% similarityShared character: tremolo
T-Rex Sweeper 2
T Rex
52% similaritySimilar voicing: lush, harmonically rich
Subdecay Vagabond Harmonic
Subdecay
52% similarityShared character: tremolo
Fulltone Supa-Trem ST-1
pedal
50% similarityShared character: tremolo
Similar charactersee all similar tone character →
Audiocade 1974 Colorsound Tremolo Clone
Audiocade
62% similarityShared character: original circuit, tremolo
JHS 3 Series Harmonic Tremolo
JHS Pedals
58% similarityShared character: true bypass, tremolo
Artec RSV-3 Resovibe
Artec
58% similarityShared character: true bypass, tremolo
Entrekin Pedals Abysm
Entrekin Pedals
57% similarityShared character: tremolo
Strymon Flint Tremolo & Reverb
Strymon
55% similarityShared character: tremolo
JHS Pedals JHS Tidewater Mini
JHS Pedals
53% similarityShared character: tremolo
See all alternatives to the JAM Pedals Harmonious Monk MK1 (cheaper + boutique) →
Questions people ask
What are good alternatives to the JAM Pedals Harmonious Monk MK1?+
The closest matches in character are the Audiocade 1974 Colorsound Tremolo Clone, the JHS 3 Series Harmonic Tremolo, the Artec RSV-3 Resovibe. Budget picks: EarthQuaker Devices Night Wire, Universal Audio Flow Tremolo, Spaceman Delta II Cadet: Harmonic Tremolo.
What pairs well with the JAM Pedals Harmonious Monk MK1?+
Strong matches from rig and tone-complementarity evidence: Marshall Plexi 1959SLP, Dumble Overdrive Special Amp Head, Gallien-Krueger MB108 — Into the 1959SLP's aggressive plexi saturation, the Harmonious Monk's atmospheric tremolo adds pulsing motion on top of the amp's own drive..
How much does the JAM Pedals Harmonious Monk MK1 cost?+
Around $277.78 (live listing price, updated Oct 23, 2026).