The Ernie Ball PO6188 Expression Tremolo is an Ernie Ball tremolo pedal, currently around $199.99. Close alternatives include the Strymon Flint Tremolo & Reverb and the Alexander Pedals Equilibrium DLX Vintage Modulation. It pairs well with the Soldano SLO 100 100-Watt Tube Guitar Amplifier and the Fender Twin Reverb Head.
Ernie Ball PO6188 Expression Tremolo
Ernie Ball · pedal
The Ernie Ball PO6188 Expression Tremolo is a tremolo pedal from Ernie Ball's effects lineup, delivering classic amplitude-modulation tremolo effects with expression-pedal-style control for real-time adjustment during performance. It offers the pulsing, rhythmic volume modulation that defines tremolo, built with Ernie Ball's reputation for road-ready, reliable hardware.
- tremolo
- modulation
- surf
- vintage
- indie
- roots rock
- roots
- expressive
Price updated Aug 27, 2026
Genres the Ernie Ball PO6188 Expression Tremolo is commonly used in
- Indie
- Surf Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Swing
cited
Inferred from shared tonal signals, not a stated genre tag. - Country
cited
Inferred from shared tonal signals, not a stated genre tag. - Punk Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Lo Fi
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Ernie Ball PO6188 Expression Tremolo
Soldano SLO 100 100-Watt Tube Guitar Amplifier
Soldano
10% matchSoldano SLO 100 100-Watt Tube Guitar Amplifier's own saturated character is the real reason this is worth trying
Fender Twin Reverb Head
amplifier
10% matchFender Twin Reverb Head's own dynamic character is the real reason this is worth trying
Pedals that stack with the Ernie Ball PO6188 Expression Tremolo
Univox Super-Fuzz
Univox
8% matchUnivox Super-Fuzz leans toward octave, and that's a real, usable character to pair with
ZVEX Fuzz Factory
Zvex
8% matchZVEX Fuzz Factory leans toward fuzzy, and that's a real, usable character to pair with
Electro-Harmonix Holy Grail Max
Electro-Harmonix
6% matchKeep Ernie Ball PO6188 Expression Tremolo's modulated voice out front: Electro-Harmonix Holy Grail Max goes after Ernie Ball PO6188 Expression Tremolo in the signal chain so its spring voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)
Eventide Space
Eventide
6% matchKeep Ernie Ball PO6188 Expression Tremolo's modulated voice out front: Eventide Space goes after Ernie Ball PO6188 Expression Tremolo in the signal chain so its spring voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)
Cheaper alternatives
Boss TR-2 Tremolo
Boss
68% similarityShared character: boss_pedals, tremolo, modulation
MXR M305 Tremolo
MXR
67% similarityShared character: tremolo, modulation, live
JHS Tidewater Tremolo
JHS Pedals
65% similarityShared character: live_performances, tremolo, modulation
Black Rabbit Little Earthquakes
Black Rabbit
65% similarityShared character: tremolo, live, vintage_charm
Caline G007 Red Belly Tremolo
Caline
99% similaritysimilar tone character
MXR Tremolo M305
MXR
95% similaritysimilar tone character
Similar charactersee all similar tone character →
Strymon Flint Tremolo & Reverb
Strymon
68% similarityShared character: tremolo, vintage_charm
Alexander Pedals Equilibrium DLX Vintage Modulation
Alexander Pedals
66% similarityShared character: tremolo, modulation, vintage_charm
Singletone Malibu
Singletone
66% similarityShared character: tremolo, modulation, live
Bookworm Effects Laughing Man Optical Tremolo V3
Bookworm Effects
66% similarityShared character: tremolo, modulation, vintage_charm
Ernie Ball Expression Tremolo
Ernie Ball
65% similarityShared character: ernie_ball, expression_pedal, tremolo
Rowin LEF-327 Trelicopter Tremolo
Rowin
99% similaritysimilar tone character
See all alternatives to the Ernie Ball PO6188 Expression Tremolo (cheaper + boutique) →
Questions people ask
What are good alternatives to the Ernie Ball PO6188 Expression Tremolo?+
The closest matches in character are the Strymon Flint Tremolo & Reverb, the Alexander Pedals Equilibrium DLX Vintage Modulation, the Singletone Malibu. Budget picks: Boss TR-2 Tremolo, MXR M305 Tremolo, JHS Tidewater Tremolo.
What pairs well with the Ernie Ball PO6188 Expression Tremolo?+
Strong matches from rig and tone-complementarity evidence: Soldano SLO 100 100-Watt Tube Guitar Amplifier, Fender Twin Reverb Head, Univox Super-Fuzz — Soldano SLO 100 100-Watt Tube Guitar Amplifier's own saturated character is the real reason this is worth trying.
How much does the Ernie Ball PO6188 Expression Tremolo cost?+
Around $199.99 (live listing price, updated Aug 27, 2026).