Detail 01
Single speed knob
Rate is the only control. Depth and intensity are fixed, so you dial a sound in seconds.
Product detailSKU #1274228082048
MXRM101 Phase 90 Guitar Effects Pedal
dynamicfunkrockpsychedelichard rock
1/5
Independent shopping perspective
The Korena take
Single-knob orange phaser. For guitarists who want the classic swirl without menu-diving, and are fine with one control.
Strong match
Who this is for
- Funk rhythm parts needing slow, watery movement under clean chords
- Hard rock leads wanting the familiar Van Halen phase swirl
- Players who want one knob and no setup decisions
Consider the trade-offs
When to look elsewhere
- Anyone needing depth, feedback, or stage-count control
- Players wanting stereo output or tap tempo
- Subtle chorus-style shimmer; this is a distinct, obvious effect
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Phase shifter, not chorus
Creates a sweeping notch through the midrange rather than pitch-detuned doubling. Thinner and more vocal.
Detail 03
Compact MXR enclosure
Standard small stompbox footprint. Fits between larger pedals on a crowded board.
Detail 04
Slow rate settings
Turned down, the sweep takes seconds per cycle — the classic sound under sustained chords and leads.
Detail 05
Fast rate settings
Turned up, it becomes a fluttering warble that works better on short, choppy rhythm playing.
Final check
Know before you order
- 01No power supply included; you supply a 9V adapter or battery
- 02One knob means no way to reduce the effect depth if it is too strong
- 03Placement matters: before distortion sounds tighter, after sounds wider
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What is the difference between a phaser and a chorus?
A phaser sweeps notches through the midrange for a hollow, vocal swirl. A chorus copies the signal and detunes it slightly for a thicker, shimmering doubled sound.
02Should I put it before or after my distortion?
Before distortion keeps the phase tight and focused. After distortion makes the sweep wider and more obvious. Both are common; try each with your rig.
03Can I control how deep the effect is?
No. Speed is the only control. The depth is fixed, so if you want a subtler swirl you would need a phaser with a depth or intensity knob.
04Does it work with bass or keys?
Yes. It processes any signal you send it. The sweep sits in the midrange, so on bass it colors the upper register more than the low fundamentals.
