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Keeley

Keeley Compressor Plus Pedal, Black (KCompPlus)

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, May 1
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Style: Pedal


Features

  • The first true advancement in our 2 and 4 knob compressor line. The new features are simple and straight forward
  • There is a simple Release Switch that is tuned for single coils or humbuckers. No more wondering if you have the attack or release set right
  • Gorgeous sounding Tone Control which emphasizes the most sensitive harmonics that can be lost in compression
  • Offers the same gorgeous push of frequencies and sweetening of tone that the old comps gave you, now with the flexibility to easily handle any instrument

Description

The Keeley Compressor is the most popular boutique compressor in the world. With well over 95,000 compressors built in our shop we have an expert understanding of compression, limiting, and sustain. We know what it takes to make an instrument sound like it's been professionally recorded. We know how to make your guitar jump from the mix. We know how to make it fun and easy to play. Keeley Compression is how. The Keeley Compressor Plus is the first true advancement in our 2 and 4 knob compressor line. The new features are simple and straight forward. Now there is a simple Release Switch that is tuned for single coils or humbuckers. No more wondering if you have the attack or release set right. Your humbuckers will have all the attack and punch that they should. Our team designed a gorgeous sounding Tone Control which emphasizes the most sensitive harmonics that can be lost in compression. The Compressor Plus now sports a Blend Control that retains the peaks in your playing and, more importantly, the proper phasing of your guitar signal. The Keeley Compressor Plus offers the same gorgeous push of frequencies and sweetening of tone that the old comps gave you, now with the flexibility to easily handle any instrument.

Brand: Keeley


Style: Pedal


Color: Black


Product Dimensions: 6.75"L x 4.25"W x 3.25"H


Item Weight: 0.3 Kilograms


Voltage: 9 Volts


Amperage: 100 Milliamps


Audio Output Effects: Compression


Controls Type: Knob, Switch


Power Source: Corded Electric


Hardware Interface: 1/4-inch Audio


Signal Format: Analog


Style: Pedal


Color: Black


Finish Type: Painted


Item Dimensions L x W x H: 6.75"L x 4.25"W x 3.25"H


Item Weight: 0.3 Kilograms


Item Dimensions: 6.75 x 4.25 x 3.25 inches


Brand Name: Keeley


UPC: 854295005703


Global Trade Identification Number: 03


Manufacturer Part Number: KCOMP+


Item Type Name: Compressor Plus Pedal


Warranty Description: Two year parts and labor warranty.


Manufacturer: Keeley


Model Name: Keeley Compressor Plus


Model Number: KCompPlus


Connector Type: 1/4 inch audio


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Compressor pedal
Style: Pedal
Works quite well. Broad range of adjustability. In particular mixing wet and dry signal.
Reviewed in the United States on February 9, 2026 by LD
    • Beyond excellent!
Style: Pedal
Incredible performance and sound. No tone colouring is perceived, despite how flexible it is. It's a safe option for any type of rig/sound.
Reviewed in the United States on September 28, 2025 by Juan Camilo Ramirez
    • 'Very Nice'
Style: Pedal
Yeah this compressor is nice, if ya like compressors ?, then look no further.
Reviewed in the United States on March 3, 2026 by "RICO"
    • Covers the full range of "subtle" to "squished" compression
Style: Pedal
Keeley's compressor pedals have been an industry favorite for many years, and the Compressor Plus is a compact and relatively affordable example of why. Keeley certainly didn't "invent" the compressor, and I've used pedals like the BOSS CS-3, MXR Dyna Comp, and Ross Compressor that have done the job well for several decades. However, this particular pedal from Keeley merges the best attributes of all of those pedals into a single, easy-to-use box. I find that the BLEND control is a important addition that you see in more and more compressors nowadays. (Wampler's excellent Ego Compressor also features this control). Basically, it's a "mix" control so that you blend in and amount of dry signal along with the compressed signal. This is important because in many cases, you want the note sustain and volume limiting qualities of a compressor, but don't want to lose that initial "punch" of the note. The BLEND knob allows you to adjust for both, and there's a toggle switch that further adjusts for the difference in attack between single-coil and humbucker pickups. (Coincidentally, my Reverend guitar features P-90's and I found that those worked better on the humbucker setting, despite them being technically a variant of a single coil pickup). The Compressor Plus is capable of adding tons of rich sustain, similar to that first time I plugged into a BOSS CS-3 and was amazed that an electric guitar could sound like that! It also can do the "chicken picking", "squished" type of compression prevalent in country or other music with quick, clean note passes. Thanks to the interplay between BLEND, LEVEL, and SUSTAIN, it's possible to also make it quite transparent for a more subtle effect. A few notes/caveats... The TONE knob works well, but it is not really meant to be an "EQ shaper" for your overall tone. It is more subtle than that, and basically just enhances or subdues the upper end dynamics through compression. Also, this pedal (as with many compressors) is susceptible to noise issues if you have problems with your power supply. I initially plugged it in with a separate power supply than my pedalboard. I must have been getting some type of ground loop or something because it resulted in terrible noise to the point of being virtually unusable. However, when I attached it to my board and used the same isolated power supply as the other pedals (Voodoo Labs Pedal Power Mini x4), the noise was almost completely gone. Just something to be aware of if you encounter that issue. ... show more
Reviewed in the United States on February 15, 2024 by StormJH1
    • Keely has it all!
Style: Pedal
This is a good compressor, that's it. It does what it says it can do. The plus is for the blending knob I guess, that's one of the few things you don't get on most compressors. I put it right at the front of the chain and it gives me the EQ and slight boost I need. I play classic hard rock in my current band and it tightens up the sound and adds a bit of bottom end so I use the tone to equalize that. It is a solid, well built product and fits great on my board. Great price too. Thank you Robert Keeley! ... show more
Reviewed in the United States on September 12, 2022 by Rob H
    • Best Mid-Priced Compressor Pedal
Style: Pedal
Yes, you could pay double the price for a high end boutique compressor pedal, but out of all the big pedal brand's compression offerings out there, I found this one to be the most versatile and transparent. It it based on a modified vintage Ross compressor circuit. I replaced an MXR Dyna-Comp with this. The Dyna-Comp, while it has a long vintage history, is *very* noisy, and squashes and colors your tone with a very specific sound that you can't dial out. The Keeley Compressor Plus lets your natural tone shine through while still providing great dynamics control. You can also dial in that squishy squashed tone if you need to, but with way less noise! The Sustain and Blend controls allow you to dial in as pronounced or subtle an amount of compression you want, while the tone knob allows you to do any EQ compensation if needed. This is definitely the best bang for your buck in a compressor pedal, just buy it, you won't regret it! ... show more
Reviewed in the United States on July 31, 2019 by Sam Connelly
    • It works very well as clean compressor
Style: Pedal
Review Image by William
I'm using before my old Line 6 POD just to add an analog compressor feeling and deep sound what i can't reach with the digital effect.. Be aware because it can increase the noise level if you config higher sustain or higher level...
Reviewed in the United States on March 12, 2026 by William
    • I wanted my notes to sustain longer
Style: Pedal
Very happy with my Keeley compressor. Was looking for that sweet sustain, and this gives it to me nicely. It also increased the noice floor from my pickups and tube amp on the hot side, so I put a Rowen noise gate in front of it, and together they’re amazing. The sustain I was looking for and noise just disappeared like magic. ... show more
Reviewed in the United States on July 20, 2025 by Philip L.

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