The Swart STR Tremolo is a Swart amplifier, currently around $2379. Close alternatives include the Swart Antares Master and the Strymon Iridium. It pairs well with the JHS Angry Charlie and the Electro-Harmonix Micro Metal Muff TOP Boost.
Swart STR Tremolo
Swart · amplifier
The Swart STR Tremolo is a 5-watt Class A single-ended combo with a 12-inch speaker and 6V6 or 6L6 output, and its distinguishing feature is a tremolo that can be shaped by a three-way EQ switch rather than offering only speed and depth. That switch lets the modulation be tailored tonally, which is unusual — most amp tremolos are fixed in character. It carries the tube reverb the Swart range is known for alongside it. The 12-inch speaker gives far more body than the 1x8 Atomic Jr at the same wattage. It suits roots, surf and blues players for whom tremolo is structural rather than decorative.
What stands out
“That switch lets the modulation be tailored tonally, which is unusual — most amp tremolos are fixed in character”
— from the listing
“it carries the tube reverb the swart range is known for alongside it”
— from the listing
“its strengths are the lush effects”
— from the community notes
“three-dimensional voice and gorgeous onboard reverb and tremolo”
— from the community notes
“The Swart STR Tremolo is a 5-watt Class A single-ended combo with a 12-inch speaker and 6V6 or 6L6 output, and its distinguishing feature is a tremolo that can be shaped by a three-way EQ switch”
— from the listing
- tremolo
- reverb
- tube
- lush
- three dimensional
- dynamic
- studio
- modulation
Good for
- Practice
- Studio
- Worship
Price updated Oct 24, 2026
Genres the Swart STR Tremolo is commonly used in
- Blues
- Indie
cited
Inferred from shared tonal signals, not a stated genre tag. - Country
cited
Inferred from shared tonal signals, not a stated genre tag. - Ambient
cited
Inferred from shared tonal signals, not a stated genre tag. - Americana
cited
Inferred from shared tonal signals, not a stated genre tag. - Classic Rock
cited
Inferred from shared tonal signals, not a stated genre tag.
Pedals that stack with the Swart STR Tremolo
JHS Angry Charlie
JHS Pedals
26% matchJHS Angry Charlie is voiced for Vox-style amps — Swart STR Tremolo gives it exactly that
Goes in front of the amp
Electro-Harmonix Micro Metal Muff TOP Boost
Electro-Harmonix
25% matchInto Swart STR Tremolo, Electro-Harmonix Micro Metal Muff TOP Boost is right at home: it's built around Vox-style amps
Goes in front of the amp
Vox Valvenergy Copperhead Drive
Vox
25% matchVox Valvenergy Copperhead Drive is voiced for Vox-style amps — Swart STR Tremolo gives it exactly that
Goes in front of the amp
W-LM Compression Fracture
W-LM
21% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)
What W-LM Compression Fracture brings here leans toward compressed — that's worth building a pairing around
Goes in front of the amp
Audiocade 1974 Colorsound Tremolo Clone
Audiocade
20% matchInto Swart STR Tremolo, Audiocade 1974 Colorsound Tremolo Clone is right at home: it's built around Vox-style amps
Goes in front of the amp
Keeley Halo
Keeley
9% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Keep Keeley Halo in Swart STR Tremolo's effects loop, clear of Swart STR Tremolo's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Sits in the amp's effects loop
Echoplex EP-3
Echoplex
8% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Put Echoplex EP-3 in Swart STR Tremolo's effects loop, clear of Swart STR Tremolo's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Sits in the amp's effects loop
AmpRx BrownBox
Amprx
tonal matchGoes in front of the amp
Swart STR Tremolo leans into Vox-style amps, precisely the platform AmpRx BrownBox wants
Cheaper alternatives
Swart STR Tweed
Swart
82% similarityShared character: single channel simplicity, lower volumes, 100 watts
Audiocade Royal British Velvet AC30 Overdrive/Preamp Clone
Audiocade
72% similarityAudiocade Royal British Velvet AC30 Overdrive/Preamp Clone recreates this amp's tone in pedal form
Mooer Micro Preamp 004 Day Tripper
Mooer
72% similarityMooer Micro Preamp 004 Day Tripper recreates this amp's tone in pedal form
Vox Valvenergy Mystic Edge
Vox
72% similarityVox Valvenergy Mystic Edge recreates this amp's tone in pedal form
Fender '68 Custom Princeton Reverb 12W 1x10 Tube Guitar
Fender
47% similarityShared character: lower volumes, tremolo, reverb
Framus Ruby Riot
Framus
93% similaritysimilar tone character
Boutique & premium upgrades
Milkman Sound Half Pint 5W 1x12 Combo
Milkman Sound
52% similarityShared character: 100 watts, sweet, tremolo
Milkman Sound Creamer 20W Combo
Milkman Sound
52% similarityShared character: sweet, tremolo, touch
Matchless DC-30
Matchless
93% similaritysimilar tone character
Similar charactersee all similar tone character →
Swart Antares Master
Swart
82% similarityShared character: single channel simplicity, lower volumes, 100 watts
Strymon Iridium
Strymon
72% similarityStrymon Iridium recreates this amp's tone in pedal form
Milkman Sound Pint 10W
Milkman Sound
53% similarityShared character: reverb, sweet, tremolo
Matchless At 40 watts, the Laurel Canyon Reverb
Matchless
50% similarityShared character: sweet, touch, reverb
Carr rambler
Carr
50% similarityShared character: tremolo, reverb, studio
Matchless Lightning Reverb
Matchless
50% similarityShared character: single channel simplicity, sweet, touch
See all alternatives to the Swart STR Tremolo (cheaper + boutique) →
Questions people ask
What are good alternatives to the Swart STR Tremolo?+
The closest matches in character are the Swart Antares Master, the Strymon Iridium, the Milkman Sound Pint 10W. Budget picks: Swart STR Tweed, Audiocade Royal British Velvet AC30 Overdrive/Preamp Clone, Mooer Micro Preamp 004 Day Tripper. Boutique upgrades: Milkman Sound Half Pint 5W 1x12 Combo, Milkman Sound Creamer 20W Combo, Matchless DC-30.
What pairs well with the Swart STR Tremolo?+
Strong matches from rig and tone-complementarity evidence: JHS Angry Charlie, Electro-Harmonix Micro Metal Muff TOP Boost, Vox Valvenergy Copperhead Drive — JHS Angry Charlie is voiced for Vox-style amps — Swart STR Tremolo gives it exactly that.
How much does the Swart STR Tremolo cost?+
Around $2379 (live listing price, updated Oct 24, 2026).