Pricing and availability
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Average Price: $107
Standard/Professional
$50
$201+
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Price History
Based on price data from 7 merchants for "Boss CS-3 Compression Sustainer". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
The Boss CS-3 Compression Sustainer is a pedal designed with the musician in mind. It enhances sustain, balances string response, and delivers a punchy tone at any volume. With this pedal, you gain control over your dynamics like never before. It compresses louder signals while boosting softer ones, creating a balanced and full sound across all volume levels.
The pedal offers smooth sustain without degrading the original sound thanks to its advanced circuitry. It compresses the dynamic range of your playing in a musical way, producing notes that sustain evenly without distortion. Whether you're looking for subtle compression or an extreme squash, the CS-3 delivers.
One of the standout features of the CS-3 is its EQ knob. This allows you to shape your tone by cutting or boosting midrange frequencies. You can adjust it to achieve an open, airy tone with added punch or a neutral tone with a balanced frequency range.
The CS-3 is also designed for low noise and reliability. It has advanced circuitry that provides smooth compression with very low noise, even at extreme settings. This pedal is versatile and intuitive, making it a must-have addition to your gear for recording or live performances.
Key Features:
- Enhanced sustain without degradation of the original sound
- Compresses louder signals and boosts softer ones for a balanced sound
- EQ knob for precise tonal control
- Low noise and high reliability due to advanced circuitry
- Versatile and easy to use in any musical situation
- Operates on a 9V battery or optional power supply
- Controls: Level, Tone, Attack & Sustain
- Power consumption: 11 mA
Owner's manual
Boss CS-3 Compression Sustainer User ManualProduct specs
| Pedal Type | Compressor |
| Inputs | 1 x Instrument |
| Outputs | 1 x 1/4" |
| Power Source | 9V DC power supply (sold separately) |
| Batteries | 1 x 9V |
| Height | 2.4" |
| Width | 2.9" |
| Depth | 5.1" |
| Weight | 1 lb. |
FAQs
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What does the Boss CS-3 Compression Sustainer pedal do?
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The Boss CS-3 Compression Sustainer pedal compresses louder signals while boosting quieter ones, providing smooth sustain and articulation without altering your original tone. It helps create a more balanced and polished sound, ideal for both live performances and studio recordings.
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Is the Boss CS-3 suitable for use with single-coil pickups?
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Yes, the Boss CS-3 can be used with single-coil pickups, but it may introduce some noise or hum at higher sustain settings. Adjusting the pedal's settings can help minimize any unwanted noise while maintaining the desired compression effect.
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What power supply does the Boss CS-3 require?
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The Boss CS-3 Compression Sustainer pedal requires a 9V DC power supply, which is sold separately. It can also be powered by a 9V battery for convenience during performances or practice sessions.
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How does the Boss CS-3 compare to other compressor pedals?
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The Boss CS-3 is known for its affordability, durability, and effective compression capabilities. It offers a good balance of features for both beginners and experienced players, making it a popular choice among guitarists who need reliable compression and sustain.
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Can the Boss CS-3 be used for bass guitar?
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Yes, the Boss CS-3 can be used with a bass guitar to enhance sustain and even out dynamics. It helps bass players achieve a consistent tone, especially in live settings or when recording.
Videos
BOSSchannel
BOSS CS-3 Compression Sustainer [BOSS Sound Check]
Reviews
PROS
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Enhances true tone from AMP without processed sound
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Versatile with adjustable attack for customized sound
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Solid build quality and durability
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Works well with both electric and bass guitars
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Affordable with good value for performance
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Subtle to heavy compression range available
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Improves clean tone presence and sustain
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Compatible with other pedals for expanded effects
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Easy to use with immediate knob response
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Can be used for a variety of musical styles
CONS
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Can be noisy, especially at high sustain levels
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Consumes batteries quickly; adapter recommended
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Some users find it too heavy-handed or aggressive
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May muddy tone when used with certain setups
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Lacks a blend control for dry/compressed signal mixing
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Boss CS-3 Compression Sustainer.
Features and functionality
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The "Attack" knob on the CS-3 controls both attack and release: fast attack/slow release counterclockwise, slow attack/fast release clockwise.
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The CS-3's sustain knob is highly sensitive, moving from minimal effect to full compression within a quarter turn.
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The sustain knob functions as a ratio control, operating in reverse: more limiting counterclockwise and lighter compression clockwise, with a fixed threshold.
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Mods and upgrades
Comparisons
Value and pricing
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Owners suggest purchasing the CS-3 used for around $60-70 as a cost-effective way to explore compressor effects.
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Use cases and applications
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The CS-3 excels in creating tight overdrive tones, making it particularly suitable for rock and power ballad clean sounds.
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The CS-3 is recommended for ambient or soft melodic styles like Explosions in the Sky, using settings with level at noon, tone at 1-2 PM, attack and sustain at 1 PM.
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Setting the attack knob to a slower position can preserve dynamics and maintain punch, beneficial for styles requiring strong presence.
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Setup and maintenance
User experience
Critic Reviews
4.0 out of 5
Based on 54 Reviews and 471 Ratings
474
Far better than my last compressor pedal!
This is the compressor pedal I should have bought instead of the NUX Komp Core.
It was a breeze to set up. I can get a gorgeous compressed tone to make my cleans more punchy and my overdriven tone closer to that beautiful singing tone I've always wanted.
A lot of people sleep on compression, as did I. But it's a great little tool to have! And if you can find one of these used like I did, you're well on your way! Of course, Boss stompbox form factor means it can survive any and all abuse one would be able to throw at it.
Preferred Settings + Usage:
Knobs from left to right:
2 o'clock / 11 o'clock / Noon / 3 o'clock
609
Perfect... for me!
I know it's not a very popular pedal ... well, it's used by many people including pros but it's also pretty much criticized by gear snobs who prefer the boutique stuff. The latter is arguably more transparent and most other compressor pedals offer a "blend" knob or the possibility to set the attack and release independently, which is probably a good thing. But I love this thing. I love how it colors the tone. It's an actual effect, not just an utility pedal like a proper pro compressor would be. By this I mean you can play with it. I like the chime it's adding to my tone and I know how to dial it. It's clearly not a transparent compressor but this is perfect to have chords and arpeggios that ring as well as a fatter sound generally. I'm not pushing the knobs to extreme settings, far from that. But it works for me and while I also have an Xotic SP Compressor (that I find fantastic), it's the Boss CS-3 that I keep on my main pedalboard these days.
Preferred Settings + Usage:
Level and Tone at 1 pm, Attack at 10 and Sustain at 11. This is subtle yet audible and it makes every chord chime.
266
does everything you'd need it to
honestly it just takes up space on my pedalboard, but every producer I work with usually wants me to use it at some point so it receives a moderate amount of attention in the studio and i've begun treating it as an always on pedal. I played on MXR's version of this pedal a long time ago and the only reason I prefer this one is because of the sustain feature; otherwise, I would just trade it in for the MXR Dyna Comp. this pedal is good but it just alters your tone in a weird way and it takes a lot of effort and time (more than usual) to make it work well with whatever your setup is. it's still good, and I actually get really cool sounds from this pedal when paired with a modulation; i like the way they react with each other.
Preferred Settings + Usage:
Genres: Punk Rock, Hard Rock, Blues Rock
3526
All you need.
This has a really good and is really useful when playing, this was the first pedal I used. It has a lot of This and that witch just makes it really practical and good sustainer and compression.
3670
Boss Reliability, but not the best in terms of sound.
This compressor definitely works, but subtle compression is out of the picture. Best setting is probably attack and level set to fully clockwise and sustain at minimum. Fine for casual use but get a better one if you're gonna record.
Bonus: it's go so much compression that you can get the Tony levin sledgehammer sound if you put attack at 0 and sustain at max. So it's fun for overcompressed, synthy stuff where you want some of the life taken out of your natural tone.
659
Not the best.
I had one of the older, Japanese models (it needed an ACA as opposed to a PSA adapter). Every now and then, I got a good sound out of it. It sounded fine when it was pushing some light overdrive, but on a clean sound, I found the sterile edge it gave to my sound that was too overwhelming to be enjoyable. It somehow sounded too bright without having any high end; something about it was super piercing, and I didn't find it enjoyable. Maybe newer models sound a little different, but I was expecting something close to the transparent brilliance of the CS-2, and I was quite disappointed. For their low-ish price point, you'd be better off with a CP-1X, and you can even find some great deals on the old CS-2s.
151
Last Compressor I'll Ever Need?
It certainly sustains the treble strings for crunchy leads, and keeps things crisp on the clean channel.
Preferred Settings + Usage:
9, 4, 9, 4
205
Boosts high signals, reduces low signals, great even tone
I use this with my bass guitars. It does what I want it to. It boosts the high signals and slightly reduces the low signals so that all are even. This pedal is almost always on when I play. I am sure there are other compression pedals out there (bass specific too); however, this one will certainly do the trick.
79
Great compressor with reasonable attack!
Boss CS-3 is a great compression pedal for your pedalboard. This pedal, of course, is suitable for all genres of music. I bought this pedal out of the need for this effect and decided to take the classic— Boss. For a reasonable price, you get not only the opportunity to change the output of your signal, but also to experiment with sound extraction without experiencing any inconvenience.
79
Going Strong With CS3 15+ Years
This BOSS CS-3 was one of the first pedals I ever bought & I still have it...! I'm not sure I had any idea what it would do for what was then an untested sound, but it has served me well & is an indispensable part of of tone.
People seem to have love/hate relationships w/ compression & I bought a lot of my current gear in Canada & attitudes do differ from one side of the pond to the other.
I keep my CS3 as the first pedal in my chain & follow it up w/ any number of pedals. I keep the settings generally about the same depending on the environment, where I may adjust level.
I took a bit chance last year when I decided to experiment w/ some other units & went through my first foray into optical compression (transparent). The CS3 pedal may be accused as a "tone sucker" by some as it is anything but transparent but i happen to like the warmth & "squash" it can impart to my sound, particularly when I have some overdrive in the chain. The optical compressors didn't work for me but I did get a Monte Allums mod done to the pedal & it has seems to have really improved what was already a great pedal by reducing noise.
Artist usage
Add artistJack Whites pedals in 2002 playing Radio City Music Hall with The White Stripes, Opening for The Strokes.
Thom Yorke is confirmed to use the Boss CS-3 Compression Sustainer, as evidenced by an image showing him with his pedals during a performance of "The National Anthem" at the 2001 Pinkpop festival.
Noel Gallagher using a Boss CS-3 at Knebworth 1996. Noel's pedalboard shown in the Oasis Knebworth 1996 Documentary at 35:07 at the end of Supersonic. https://www.paramountplus.com/movies/oasis-knebworth-1996/FsgkdtzMwFAVQ54M_V9MRjEVXcGa2i0b/
In this Music Radar article, the Edge's guitar tech (Dallas Schoo) details The Edge's setup during the 360 tour. His Boss CS-3 is listed among his outboard pedals.
Sold on Reverb.com via Bananas at Large in 2017.
BOSS CS-3 Compression Sustainer Pedal (Joe Satriani Private Collection)(Pre-Owned)
As you can see from the picture from Tom's instagram, in his studio, he owns/uses the Boss Compression Sustainer.
Synyster Gates talks about his Boss Compression pedal in this interview about his gear with Guitar Center at 4:24. Syn says, "I pretty much just run the boss blue compressor, CS-3, I think. That just give it kind of just this natural sort of, what is that kind of stuff called? Um, I don't know. It just beefs it up a little bit but it doesn't sound synthetic. It just sounds really nice. It's just a very natural, whatever it does, sound."
Album Usage
The Boss CS-3 Compression Sustainer has been featured on the following albums:
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use Boss CS-3 Compression Sustainer, it is most commonly used with the following gear.
Community setups
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