Detail 01
Envelope filter, not a wah
The filter sweep is triggered by how hard you play, not by a treadle. Dynamics are the control.
Product detailSKU #1274228081966
MXRM82 Bass Envelope Filter Bass Effects Pedal
bluespopfunk rockalternativefunk
1/2
Independent shopping perspective
The Korena take
A bass-voiced envelope filter from MXR. For players who want dynamic funk and synth-like sweeps that track picking strength rather than a fixed wah setting.
Strong match
Who this is for
- Funk and funk-rock bass lines built on percussive right-hand attack
- Players chasing the Flea or Claypool auto-wah sound
- Adding movement to a repetitive groove without changing notes
Consider the trade-offs
When to look elsewhere
- Players wanting a foot-swept wah they control manually
- Guitarists — the voicing is tuned to bass frequencies
- Anyone needing subtle always-on tone shaping; this is an 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
Bass-specific voicing
The sweep sits low enough to keep bottom end intact instead of thinning the note like a guitar filter would.
Detail 03
Pedal format
Goes on a board in your signal chain. Needs a spot, a patch cable, and power.
Detail 04
$179.99
Mid-tier pricing for a boutique-adjacent effect. Cheaper than multi-effects units that bury the filter in menus.
Detail 05
Single-effect box
One job, done well, with knobs you can reach mid-song. No presets or scrolling.
Final check
Know before you order
- 01Budget for a 9V supply and a patch cable if your board is full
- 02Envelope filters need consistent picking — light touch means the filter barely opens
- 03Check your pedalboard real estate before ordering
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I use this on guitar?
It is voiced for bass, so on guitar the sweep sits low and the effect feels muddier and less pronounced. It will function, but it is not what it was built for.
02Do I need to control it with my foot like a wah?
No. The footswitch turns it on and off. The sweep itself responds to how hard you attack the strings.
03Will it work with a passive bass?
Yes. You may need to play with more attack, since a passive bass sends a weaker signal to trigger the filter.
04Is this good for slap bass?
Yes. Slap gives a sharp transient, which is exactly the kind of attack an envelope filter opens on.
