
Keeley Compressor Plus 4-Knob Compressor Pedal
Keeley Compressor Plus Compressor Pedal for Electric Guitar and Bass
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The World's Most Popular Boutique Compressor
Keeley Electronics - 'Compressor Plus'

Keeley 'Compressor Plus'
with Added Tone And Blend Control
The classic Keeley Compressor is the world’s most popular boutique compressor, and with well over 80,000 compressor units built by the company, it’s safe to say they know a thing or two about compression, limiting and sustain.
Keeley’s Compressor Plus is their first true advancement in their hugely successful 2/4 knob compressor range. The pedals new enhancements are much simpler and more straight forward then previous models, now there’s a simple ‘Release Switch’ which has been tuned specifically for either single coils or humbuckers. No more worrying if you’ve set the attack or release right, your humbucker equipped guitar will have buckets of attack and punch!
Keeley also designed a superb sounding ‘Tone’ control, which accentuates the most sensitive harmonics which can often get lost in compression, alongside a ‘Blend’ control which retains the peaks from your playing, and perhaps more importantly, the correct phasing of your guitars signal.
Keeley’s classic ‘Compressor Plus’ delivers the same push of frequencies and ripening of tone that the old compressors gave you, but now with much more versatility to handle any instrument with ease.
at a glance
• High-grade components used throughout
• Carefully preserves your guitar's natural tone
• Blend knob for combining your dry signal with the compressed signal
• Hand-matched transistors to less than 1% tolerance
A Truly Versatile Workhorse

designed for guitarists spanning all genresThe Compressor Plus is actually a compressor, with the addition of an expander/sustainer too. It doesn’t just act as a regular compressor limiting the peaks found in your playing, it also adds more gain as notes begin to fade out. When it comes to sustain, we can all agree there’s nothing worse than a bend that fades out before you’d like it too. Fortunately the Keeley Compressor Plus can add the ideal amount of sustain to make sure your guitar sings!
The Compressor Pro can do a job for all styles, it’s not not just funk or chicken pickin! The new Compressor Plus is made for guitarists across all genres who long for a smooth, subtle wash across their guitar tone. Remove just the right number of peaks to discover an ambient layer and then blend in the desired amount of treble to layer a lovely shimmer on your guitars signal.
Utilise with your fuzz of choice to bask in a wall of thick tone you’ve previously only heard on your favourite records! Looping is a treat now too with the Compressor Pro, your loops will now be blissfully balanced and smooth! Or, just use it as a boost, nothing gets the best out of your valve amp like Keeley’s Compressor Pro!
Navigating the 'Compressor Plus'

Keeley Compression, the Industry Standard The new Keeley Compressor Plus is the result of the company specializing in compressors for over 15 years. Chief Engineer and founder Robert Keeley said, “Compression was the first effect I found that was hard to make sound good off the shelf, so I set out to create the best sounding compression effect possible.”
1. SustainAdjusts compression ratio and increases sustain. Note: Higher compression settings will create noise when not playing.
2. Blend Adjusts mix of compressed and uncompressed signal. Full left for clean, full right for max compression.
3. Attack Adjusts the attack and release for single coils or humbuckers.
4. Level Adjusts for gain lost to compression or blend. Set to unity or turn it up for a boost.
5. Tone Adjusts brightness of output. Turn right for brighter tone.
6. Footswitch Turns the effect on/off.
Keeley Electronics - 'Compressor Plus' Pickup Demo
the world's most popular boutique compressorClick below for an informative and interesting look as to how the Compressor Plus behaves with guitars with varying pickups, and also different effects combinations!

The Tech Spec
Features | Specification | Pedal Type | Compressor |
---|---|
Analogue/Digital | Analogue |
Inputs | 1 x 1/4" |
Outputs | 1 x 1/4" |
True Bypass | Yes |
Power Source | 9V DC power supply required (sold separately) |
Power Usage | 5mA |
Height | 2" |
Width | 2.35" |
Depth | 4.1" |
Weight | 0.58 lbs |