Detail 01
Top Boost
A separate high-end lift. Lets you add presence and bite without turning up overall treble and thinning the body.
Product detailSKU #1274034486372
Electro-HarmonixXO Metal Muff With Top Boost Distortion Guitar Effects Pedal
Saleaggressivehigh outputwarmmetalrockhard rock
Independent shopping perspective
The Korena take
A high-gain distortion pedal with a Top Boost control, aimed at players who want aggressive, cutting metal tones from a clean amp.
Strong match
Who this is for
- Getting heavy rhythm tone out of a clean-channel amp
- Players who want a dedicated high-gain sound on a board
- Cutting through a loud band mix with a mid-forward voice
Consider the trade-offs
When to look elsewhere
- Players after light crunch or edge-of-breakup overdrive
- Anyone wanting a transparent boost that keeps their amp's character
- Small boards where a 4.7 x 5.7 inch footprint won't fit
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
Distortion, not overdrive
Clipping is generated in the pedal, so it gives you the same heavy voice regardless of how loud the amp is.
Detail 03
High output
Enough level on tap to push a clean amp hard. Watch the output control so you don't slam the front end unintentionally.
Detail 04
4.72 x 5.71 inch footprint
This is a large-format enclosure. Measure your pedalboard, especially in the back row next to power supplies.
Detail 05
2.52 inch height
Tall enough that under-board mounting and some flight-case lids can be tight. Check clearance before you mount it.
Detail 06
Around $109
Entry-to-mid price for a dedicated high-gain pedal, which means less tweakability than boutique units but a straightforward core sound.
Final check
Know before you order
- 01Budget for a power supply and a patch cable if your board lacks a spare
- 02Large enclosures draw the same power but eat more board space
- 03High-gain pedals expose noisy single-coils and bad cables — check your signal chain
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will this work through a solid-state or modeling amp?
Yes, into a clean channel. Distortion pedals like this generate their own clipping, so they don't rely on the amp breaking up.
02What does the Top Boost do?
It adds high-end on top of the distorted signal, so you can sharpen attack and cut through a mix without raising overall treble.
03Can I use it with a bass or a seven-string?
It's a guitar distortion. Low tunings and extended range work, but expect the low end to get looser as gain goes up.
04How much room does it need on a pedalboard?
About 4.7 inches wide by 5.7 inches deep, and 2.5 inches tall. Plan the space before you order.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSize & weight
- Dimensions Wxhxd
- 4.72 inch x 2.52 inch x 5.71 inch
