Keeley 4 Knob Compressor Pedal

Compact Guitar Compression Pedal with Sustain (Compression), Output Level, Attack Speed and Input Gain Controls, and True Bypass Switching
Keeley 4 Knob Compressor Pedal image 1
Keeley 4 Knob Compressor Pedal image 1
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Keeley 4 Knob Compressor Pedal
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Studio-grade Compression in a Stompbox

The Keeley Electronics 4 Knob Compressor rocks. Compression has long been a studio and stage essential for pro guitarists, and Robert Keeley is making some of the best-sounding compressors on the market. What's his secret? Robert uses only the highest-quality components, resulting in a stompbox that preserves your guitar's natural tone, while juicing clarity and balancing out the strings. With the 4 Knob, you're getting studio-grade compression in a stompbox form factor. If you like your guitar sound up front and transparent, you need the Keeley 4 Knob Compressor in your rig.

Keeley Electronics 4 Knob Compressor Guitar Compression Pedal at a Glance:
  • Great-sounding compression - without the noise
  • Weapons-grade build quality
  • Four knobs = iron-fisted control
Great-sounding compression - without the noise

The Keeley 4 Knob Compressor makes your guitar sound great, without introducing noise into the signal. You also get the controls to shape your sound exactly the way you want it. The 4 Knob Compressor is a pedal you'll never want to be caught without. Whether onstage or in the studio, you'll come to rely on the Keeley 4 Knob Compressor as an essential component of your guitar sound.

Weapons-grade build quality

Keeley's 4 Knob Compressor may be small, but it's packed with ultra-high-grade components. Guitar pedal guru Robert Keeley wouldn't have it any other way. You see, Robert knows that metal film resistors and capacitors translate into ultra-clean operaton. In his quest for the absolute sound, he even hand matches transistors to less than one percent tolerance. With its weapons-grade build quality, you can also rest assured that your Keeley 4 Knob Compressor will stand up to road abuse and give you many years of great sound and trouble-free operation.

Four knobs = iron-fisted control

The Keeley 4 Knob Compressor gives you iron-fisted control over you guitar sound. The Sustain knob lets you dial in the exact amount of compression you want. The Level knob is your output control. With minimal sustain and lots of level, you essentially have a clean boost. The "4 Knob" is a deluxe model featuring two additional knobs not found on the standard (and otherwise identical) Keeley Compressor. Attack lets you shape the front of your notes - the ictus. Turning this clockwise will preserve and emphasize your pick attack by starting to squeeze the signal later. Combining different settings of the 4 Knob's controls gives you a near-infinite amount of dynamics control over your guitar sound.

Keeley Electronics 4 Knob Compressor Guitar Compression Pedal Features:
  • Get a perfectly compressed guitar signal with no unwanted distortions!
  • High quality components used throughout
  • Preserves your guitar's natural tone
  • Adds clarity and balances out the strings
  • Attack knob retains the full impact of your pick attack
  • Input sensitivity lets you tailor the gain for various line-level sources
  • Back off on the sustain knob and jack up the level knob to use as a clean boost
  • Metal film resistors and capacitors ensure ultra-clean operaton
  • Hand-matched transistors to less than one percent tolerance
The Keeley 4 Knob Compressor: studio-grade compression in a stompbox!

Tech Specs

Pedal Type Compression
Inputs 1 x 1/4"
Outputs 1 x 1/4"
Power Source 9V DC power supply required (sold separately)
Batteries 1 x 9V
Manufacturer Part Number K4COMP

Customer Reviews

Based on 15 reviews
Write your review

Amazing Compressor that won't let you down!

This compressor blew me away because of various features that this neat pedal contains. I originally bought this pedal to add sustain to my American Telecaster, yet not only did it add the sustain it also added color to my signal. I highly recommend this pedal.

Keely Rocks

Wow, the ability to fine tune the clipping and sustain to maximize compression while eliminating that "pop" he you have a heavy attack. This is the best I've used, amazing for fingerpicking as it make all your notes "equal" in volume and sustain and great for lead playing makings solos effortless because you don't have to overwork for tone and sustain.
Music background: Player/Teacher

My secret weapon

This pedal is absolutely essential to the shape of my tone. I hope I am never on stage or in studio with out one of these. My main amp is a voxac30. Vox amps are well known for the chime on the tail of notes. This pedal's sustain on that chime is incredibly pleasing to the ear. The Keeley 4 knob Compressor is truly one of easiest ways to bring your tonal shape to the next level. If you take your sound serious, this is a must have.

Keeley Compressor

This is the one pedal that never leaves my board - EVER !!!
Music background: Guitar Player

It's True

Every good thing you've heard about this pedal is true. I was using a medium size pedalboard that already sounded good. Really good - but something was missing. I put this on the front end and it took it to total "pro" immediately. I also put this and a buffer in front of my TC G-System and the dreaded "tone-suck" was gone. Seriously. Straight into the amp sounds the same as through the rig. Amazing.
Music background: Engineer, guitarist
See also: EQ Pedals, Keeley, Keeley Compressors and EQ