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Keeley 4-Knob Compressor Guitar Effects Pedal 

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Keeley's most popular pedal, the Keeley compressor has become an industry standard for stomp box compression. The sound will inspire, and your music ...Click To Read More About This Product

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See All Keeley Compressor Effects Pedals
OVERVIEW

Voted 2004 Guitar Player Magazine's Editor's Pick Award.

Keeley's most popular pedal, the Keeley compressor has become an industry standard for stomp box compression. The sound will inspire, and your music will flow freely-just plug the compressor pedal in and let your head, heart, and fingers fly. The sound quality of the Keeley compressor is rarely heard in the stompbox arena and is only seen in very expensive rackmount or tube equipment.

It is a true audiophile and studio-grade compressor, with exotic rackmount-quality in a stomp box. The Keeley compressor pedal ships with the 9V DC jack at the top end of the guitar pedal and use the same type of power supply used by nearly all guitar effect manufacturers.

Internal Attack Control
The compressor pedal has an Internal Attack control, designed for bass players with high-output active pickups or active pedal boards with buffers.

Sensitivity Control
The Keeley compressor pedal also has an Input Sensitivity Control, meaning you can use this in your studio to run keyboards, drum machines, drum mics, even master recordings and other line-level uses. You'll raise your signal to a new level of sonic awesomeness.

True bypass switching circuit
True bypass means that when the effect is off your guitar tone will not be affected at all. The true bypass circuit makes sure you have absolutely no tone loss or signal reduction through the compressor pedal in the off/bypass mode.

Triple-pole double-throw switch
This switch makes sure you have absolutely no tone loss or signal reduction through the Keeley 4-knob compressor even in the off mode. Other compressors use a cheap switch and design that runs down your signal even when off or if the battery goes weak.

The Sustain Control
The 9 O'clock position should be barely noticeable. It will just take out really loud sudden peaks, this is great for protecting your speakers and the like. The 12 O'clock position provides the right presence for using the Keeley compressor pedal continuously while performing. The 3 O'clock position is great for solos. It really adds some cool effects to your playing dynamics. Only when really cranked do you get the pluck sound of your pick emphasized.

Tone-tested components
The Keeley compressor effect has nothing but tone-tested components and has true bypass switching. Effect switching incorporates a triple pole-double throw switch. You will have clean unaffected sound when in the bypass mode, with an LED for effect indication. Metal film resistors and capacitors ensure the cleanest compressor on the market. Hand matched transistors to less than 1% tolerance ensure you get a perfectly compressed signal, no chance for unwanted distortions. For those wanting a better tone than that of Trey Anastasio from Phish or David Gilmore of Pink Floyd or the Edge of U2 this is it.

Power supply
The DC jack is the standard type fitting just about every power supply out there. The Voodoo Labs Pedal Power, MXR DC Brick, Boss, Ibanez, etc. power supplies work perfectly with the compressor

Keeley's compressors are completely hand built and tested to ensure that there are no failures. The guitar pedal is "semi-abused" to make sure there is nothing but bliss when you install your new compressor. Since each compressor pedal is hand made there might be small differences as improvements are made. Every attempt is made to make sure your Keeley pedal looks perfect and sounds better than you imagined.

FEATURES
  • Internal attack control
  • Sensitivity control
  • Tone-tested components
  • True bypass switching circuit
  • Triple-pole double-throw switch
  • The sustain control

Try it. You and your guitar tone will be taken to new heights.

Reviews
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Review Snapshot

by PowerReviews
Keeley4-Knob Compressor Guitar Effects Pedal
 
4.7

(based on 25 reviews)

Ratings Distribution

  • 5 Stars

     

    (21)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (3)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

92%

of respondents would recommend this to a friend.

Pros

  • Compact (10)
  • Excellent sound quality (10)
  • Responsive (8)
  • Versatile (6)
  • Good selection of effects (4)

Cons

  • Pricey / poor value (3)

Best Uses

  • Home studio (9)
  • Performances (8)
  • Amateur recording (7)
  • Professional recording (5)
  • Outdoor events / games (4)
    • Reviewer Profile:
    • Experienced (9), Professional musician (5)

Most Liked Positive Review

 

Keeley Is The Real Deal...

If you want the cleanest, sweetest, fullest, roundest sounding compressor out there, but don't want to get some rack-mpunted monstrosisty, this is your pedal. You won't be disappointed, and I think...Read complete review

If you want the cleanest, sweetest, fullest, roundest sounding compressor out there, but don't want to get some rack-mpunted monstrosisty, this is your pedal. You won't be disappointed, and I think the high price is warranted by the results you get. Buy one!
The Keeley 4-knob Compressor is truly great, almost noiseless unless you turn all the controls on full, and even then it's fairly quiet. The true bypass is excellent, and with the level control you can match the volume of the pedal to your own volume very easily. With the 'Sustain' dialed all the way off (left), it sustains plenty, with it all the way up (right), your notes will last indefinitely... without any distortion. It sounds like a clean note that's about to feedback at any time, basically... wonderful sweet tone, and a big improvement over anything else I've used.
Extremely well-made, but small enough to fit almost anywhere. I'm a sucker for metallic silver, anyway. lol The knobs are extremly tough and don't move after you've set them, without being stiff. Even though the footswitch is mechanical instead of electronic, it turns on and off noiselessly as well.
Well worth the bucks. With stomp boxes, you almost always get what you pay for. I was using the bottom-of-the-line Danelectro 'Suf 'n' Turf' compressor before this, which I think cost all of 20 clams. And it was incredibly noisy and there was little you could do with the controls. So, rather than just get the next-cheapest one, I took a friend's advice and went to the top-of-the-line Compressor, and this is it. This is no overpriced boutique pedal that looks flashy but basically does no more than a Boss pedal would. This is the Real McKeeley. If it can make me sound like Chet Atkins, think of what it might do for you....

VS

Most Liked Negative Review

 

What's all the excitement?

I bought this several years ago. I have always found it to be so subtle that I was not sure what was the point. I have another compressor on my board that I find...Read complete review

I bought this several years ago. I have always found it to be so subtle that I was not sure what was the point. I have another compressor on my board that I find to be quieter and more robust (visual sound Comp 66). The time may be coming to get rid of this, it does work OK, but for a gigging player it is a pain to adjust and it just lacks any real effect...maybe for recording it works?? The real problems with this unit are:
1. The pots have gotten very noisy (also true with pots on a moded BD-2 from keeley i have but that might be the Boss pots; and BTW I am not knocked over by the mod on the BD-2...pretty minimal change/improvement in a live environment)
2. It died after 2 yrs and I had to get it repaired at my cost
3. The pedal switch is pretty stiff and can be hard to hit when you are doing that one foot dance at a show!
4. It is way too pricey for the durability and the utility.
5. I hate the blue light as it is so bright I cannot see the knobs to adjust them on a dark stage floor.
So I know everyone loves this thing...I don't hate it, I just do not see what is so great about it. My choice would be a Visual Sound compressor, or just go with the Boss, in a noisy place it's all the same, and you got 180 extra in your pocket!! So I know lots disagree…..flame away…I can take it!

Reviewed by 25 customers

Displaying reviews 1-10

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(6 of 7 customers found this review helpful)

 
3.0

What's all the excitement?

By BCY123

from NYC, NY

About Me Experienced

See all my reviews

Ask me a question

Pros

  • Compact Design
  • Nice look

Cons

  • Died
  • Limited Selection Of Effects
  • Pots Are Noisy

Best Uses

    Comments about Keeley 4-Knob Compressor Guitar Effects Pedal:

    I bought this several years ago. I have always found it to be so subtle that I was not sure what was the point. I have another compressor on my board that I find to be quieter and more robust (visual sound Comp 66). The time may be coming to get rid of this, it does work OK, but for a gigging player it is a pain to adjust and it just lacks any real effect...maybe for recording it works?? The real problems with this unit are:
    1. The pots have gotten very noisy (also true with pots on a moded BD-2 from keeley i have but that might be the Boss pots; and BTW I am not knocked over by the mod on the BD-2...pretty minimal change/improvement in a live environment)
    2. It died after 2 yrs and I had to get it repaired at my cost
    3. The pedal switch is pretty stiff and can be hard to hit when you are doing that one foot dance at a show!
    4. It is way too pricey for the durability and the utility.
    5. I hate the blue light as it is so bright I cannot see the knobs to adjust them on a dark stage floor.
    So I know everyone loves this thing...I don't hate it, I just do not see what is so great about it. My choice would be a Visual Sound compressor, or just go with the Boss, in a noisy place it's all the same, and you got 180 extra in your pocket!! So I know lots disagree…..flame away…I can take it!

    (4 of 6 customers found this review helpful)

     
    3.0

    4 knob keeley compressor, too noisy.

    By duke

    from nor cal

    About Me Experienced

    Comments about Keeley 4-Knob Compressor Guitar Effects Pedal:

    we average about three shows a month for the last 10 years. usually in small bars and restaurants. this pedal makes a loud hisssing noise. i sent it back to keekey and they said that the noise was normal. i run it as the first pedal in my string. as you dial up the level or the compression you also dial up hiss. i seldom have more than 4 effects on the stage. mostly blues, no super high gain. usually playing through small 10 to 15 watt amps. wish it was more quiet.

    (4 of 4 customers found this review helpful)

     
    5.0

    If you could only buy 1 pedal in your life, buy this one!

    By Don Dee

    from Pasadena, CA

    See all my reviews

    Ask me a question

    Comments about Keeley 4-Knob Compressor Guitar Effects Pedal:

    Before you buy anything, always try it out first. Go to your music store that carries this pedal, and try it out. Don't buy anything based on our opinions. You need to be happy with what you hear. I personally will always have this pedal in the "ON" position. This is the best pedal I have ever had. I purshased the Boss Compressor pedal several times over the years, and always wound up taking it back, because it would take away from your playing dynamics.....like how hard you strike the string. It would even everything out, (monotone) and take the dynamic away. That is where this pedal shines. You get the sustain, and all the other options, and keeps your dynamics.
    This Keeley is increadable. You have 4 knobs, as you can read about in the previous reviews, and see in the picture. They allow you to control and fine tune your sustain, attack, clipping and level. What you dial in, is what will control your sound, and sustain.
    Quality all the way. Solid, nice knobs that are plainly labeled. All metal, and made here in the U.S. of A. Solid box (metal), and beautiful. All hand wired. I love the bright blue "on" light. I called Keeley to ask a few questions, and the reps. know their product, and are very patient, polite, and treat you with that feeling of appreciateing your business.
    The reason I gave it a very high rating, is because the pedal is worth it! When you purchase a product, and pay a chunk of change, you expect your moneys worth. You will get your moneys worth from this pedal. It is worth every penny. I have been playing for 47 yrs. This pedal enhanses your sound, and gives you full control.

    (4 of 4 customers found this review helpful)

     
    5.0

    Keeley Is The Real Deal...

    By Johnny Switchblade

    from Oakland, CA.

    See all my reviews

    Comments about Keeley 4-Knob Compressor Guitar Effects Pedal:

    If you want the cleanest, sweetest, fullest, roundest sounding compressor out there, but don't want to get some rack-mpunted monstrosisty, this is your pedal. You won't be disappointed, and I think the high price is warranted by the results you get. Buy one!
    The Keeley 4-knob Compressor is truly great, almost noiseless unless you turn all the controls on full, and even then it's fairly quiet. The true bypass is excellent, and with the level control you can match the volume of the pedal to your own volume very easily. With the 'Sustain' dialed all the way off (left), it sustains plenty, with it all the way up (right), your notes will last indefinitely... without any distortion. It sounds like a clean note that's about to feedback at any time, basically... wonderful sweet tone, and a big improvement over anything else I've used.
    Extremely well-made, but small enough to fit almost anywhere. I'm a sucker for metallic silver, anyway. lol The knobs are extremly tough and don't move after you've set them, without being stiff. Even though the footswitch is mechanical instead of electronic, it turns on and off noiselessly as well.
    Well worth the bucks. With stomp boxes, you almost always get what you pay for. I was using the bottom-of-the-line Danelectro 'Suf 'n' Turf' compressor before this, which I think cost all of 20 clams. And it was incredibly noisy and there was little you could do with the controls. So, rather than just get the next-cheapest one, I took a friend's advice and went to the top-of-the-line Compressor, and this is it. This is no overpriced boutique pedal that looks flashy but basically does no more than a Boss pedal would. This is the Real McKeeley. If it can make me sound like Chet Atkins, think of what it might do for you....

    (4 of 5 customers found this review helpful)

     
    5.0

    Best Compressor Pedal

    By Rene Diaz

    from Undisclosed

    See all my reviews

    Comments about Keeley 4-Knob Compressor Guitar Effects Pedal:

    This is the best Compressor pedal I've owned. If you are searching for a compressor pedal, don't look further, this is the one. You could buy a lot of compressor pedals for half or less than half the price of this one, but none will be as good as this one, it's worth it. I've learned that in guitar pedals, most of the times, you get what you paid for, is better to save a little and buy good-quality pedals. And Keeley's customer service is the best!

    (3 of 3 customers found this review helpful)

     
    5.0

    Oh my Lord!

    By Chileanbacker

    from Santiago Chile

    About Me Experienced

    See all my reviews

    Pros

    • Compact Design
    • Excellent Sound Quality
    • Good Selection Of Effects
    • Responsive
    • Versatile

    Cons

      Best Uses

      • Amateur Recording
      • Home Studio

      Comments about Keeley 4-Knob Compressor Guitar Effects Pedal:

      I use it with my Jetglo Rickenbacker 330 6 through my 1978 silverface Deluxe Reverb and nothing else in between... Listen to me every body, this is the first compressor I use that is dead quiet!... (Please sorry my english Im from South america).... And the sound is so pure, I can hear the best of my beloved Rickenbacker voice without weird coloration . After that I conect in chain first the compressor, distortion Boss ce2, ehx deluxe memory man (very old like me) and oh my lord Satan!..this thing sound even better!!...and no noise at all. I really think the people who said this is noisy dont have any idea of have to use a compressor correctly. Mine is the 2 knob version and with my old Ibanez Cp9 are my pride and joy in the Compressor pedals kingdom... Run to Buy one
      Cheers from Chile

      (3 of 5 customers found this review helpful)

       
      5.0

      Excellent compressor

      By ART DOYLE

      from Overland Park, Kansas

      About Me Professional Musician

      See all my reviews

      Ask me a question

      Pros

      • Compact Design
      • Excellent Sound Quality
      • Responsive

      Cons

        Best Uses

        • Amateur Recording
        • Home Studio
        • Performances

        Comments about Keeley 4-Knob Compressor Guitar Effects Pedal:

        I've owned numerous compressors, this unit sounds good and is built with quality, easy to change batteries.

        I recently bought a Demeter Compressor, it broke within 2 weeks with little use, even when it worked, didn't compare to the Keeley, it was also poorly built compared to the Keeley, not user friendly changing batteries, the plate with the screw holes didn't line up properly.

        Another compressor to avoid, the overrated and overpriced Carl Martin Compress.....

        I've own both the 2 & 4 Knob Keeleys, both are worth the price.

        (3 of 3 customers found this review helpful)

         
        5.0

        Best of Show

        By Zabubabobby

        from TX

        About Me Professional Musician

        See all my reviews

        Ask me a question

        Pros

        • Excellent Sound Quality

        Cons

          Best Uses

          • Amateur Recording
          • Events
          • Home Studio
          • Performances
          • Professional Recording

          Comments about Keeley 4-Knob Compressor Guitar Effects Pedal:

          This should be no surprise, but Keeley is the Cadillac of compressors. Just adds to and enhances your tone - doesn't get in the way. I never turn it off. This replaced an MXR Custom Comp. MXR is nice, but the Keeley just sounded better to me. I recommend the four knob version (over the two knob one) for the ease of adjustment, without having to take the back off of the unit, as required on the two knob version. Yes, it is expensive, but highly recommended if you are serious about great tone.

          (3 of 3 customers found this review helpful)

           
          5.0

          Best I've ever played through.

          By J Stringfield

          from San Diego

          See all my reviews

          Ask me a question

          Comments about Keeley 4-Knob Compressor Guitar Effects Pedal:

          Adds great sustain for those distortion/high gain leads and also fantastic punch for the funky cleans (think Red Hot Chili Peppers). I leave this pedal on more than it is off. I would say that it is vital for my set up.
          Without a doubt, this the best compressor pedal I've used. The four knobs provide the necessary options for your guitar compression. I love how the signal breaks into a sweet warm sounding distortion with the Level knob turned past the 1 o'clock range. This is an incredible buy.
          Extroardinarily well-built, sturdy, and it is also smaller than a Boss pedal.
          This is more expensive than other compressor pedals on the market but the sound quality is worth the buy. I did a comparison with my Boss CS-3 compressor and there is a conspicuous difference in sound quality.

          (2 of 2 customers found this review helpful)

           
          5.0

          Didn't know what I was missing

          By PraiseRising

          from Marlboro, NY

          About Me Professional Musician

          Verified Buyer

          Pros

          • Compact Design
          • Excellent Sound Quality

          Cons

            Best Uses

            • Amateur Recording
            • Events
            • Home Studio
            • Performances
            • Professional Recording

            Comments about Keeley 4-Knob Compressor Guitar Effects Pedal:

            I play a Telecaster American Deluxe through a Vox AC15 in a live setting every other week for about 400 people at our church. I have been pretty happy with the sound of the tube amp and a few pedals. I've just been stacking a custom Drive/Fuzz with a second Drive/Boost pedal, into a Line 6 Delay, using the modded spring 'verb and tremolo of the amp. Very basic. But when I would try to go clean the sound was thin and didn't have much push or sustain.
            A friend of mine recommended compression so I started shopping and researching. I always try to go high-end, because you get what you pay for in gear. After reading all the reviews and watching tons of videos it was a toss-up between this and the Electro-Harmonix tube Black Finger compressor. I flipped a coin and went with the Keeley. I put it in line after my rhythm Drive, just before my Lead Drive pedal and Delay and couldn't be happier. The sound stays big when I cut the drives and the clean leads and chords are just as thick as I need them to be with excellent sustain. I found a setting that works beautifully with my single coils and now I just leave it on all the time.
            Well worth the money to get the sound I wanted.

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