Boss Compression Sustainer

Classic Compression, Smooth Sustain

Countless guitarists trust the CS-3 Compression Sustainer for its smooth sound and outstanding versatility. From subtle dynamics control to rich, clean sustain, this blue BOSS classic provides exceptional balance and articulation, whether playing rhythm or lead. Level, Tone, Attack, and Sustain knobs offer precise, intuitive operation and the ability to shape your sound for any musical style. In continuous production since 1986, the CS-3 is a go-to staple for players seeking natural-sounding compression.

Fluid Operation

Compression evens out volume by reducing loud signals while boosting soft ones, and the CS-3’s Attack knob determines how quickly the circuit reacts. Turning it clockwise preserves string attack for a snappier, more percussive sound, while counterclockwise settings provide progressive control over signal spikes. Twisting the Sustain knob increases the amount of compression, allowing you to tighten the sound and produce natural sustain without distortion.

Precision Dynamics Control

The CS-3 features a high-performance VCA circuit that delivers stable, consistent compression with very low noise. Renowned for its distinctive character and well-balanced response, the pedal maintains clarity across all playing styles. It excels at everything from hot country licks and punchy power chords to singing solos, making it an essential tone-enhancing tool.

Tonal Versatility

The Tone knob adds another layer of versatility by shaping the EQ of the compressed signal. Higher settings enhance the treble for a sharper, more cutting tone—perfect for chimey arpeggios, funk rhythms, and parts that need to stand out. Rolling it back softens the highs, creating a warm, mellow voice that suits genres like jazz and neo soul. Whether you need some extra bite or a smoother feel, the CS-3 helps you sculpt your sound to match the music you’re playing.

1 – All claims require a purchase receipt. It is the customer's responsibility to present it when making a claim.

2 – Except as stated below, in-store sales are final and items purchased may not be returned. By completing their transaction, the customer acknowledges that they have taken the item(s) in optimal condition.

3 – Guitars, basses, pedals, amplifiers, accessories, and tubes are not returnable. By paying for the item, the customer acknowledges that: (i) they inspected it and found it to be in optimal aesthetic condition without defects; and (ii) they tested it and it was functioning properly.

4 – All claims due to defects are subject to the manufacturer’s terms and conditions.

5 – Guitars, basses, pedals, and amplifiers will have a 30-day warranty. The electronics of guitars and basses will have a 90-day warranty. Guitars Boutique, at its sole discretion, will decide whether to repair, replace parts or components (with identical ones), and/or replace the item with an identical one.

6 – At the store's discretion, defective items may be exchanged for an identical item SUBJECT to the defective item being in the same condition as when it was acquired, including its original packaging with all its accessories. This will be done as store credit only. The credit does not apply to special orders or lay-away.

7 – All merchandise leaving the store will be considered as used in the future.

8 – No refunds will be given, regardless of the person.

9 – Special, clearance, or discounted items are not returnable.

Puerto Rico only.

In case of a return, the shipping cost will be deducted from the refund.

Guitars Boutique ships to PR via federal mail USPS, UVA, and iWide.

Estimated delivery time once the order has been shipped:

• Lightweight items, less than 14 pounds are shipped via USPS.
• Heavier items are shipped via iWide and UVA.
• No shipments are made on Sundays.

Guitars Boutique is not responsible for delays caused by shipping companies.

• The buyer is responsible for the care of their instrument/equipment against changes in temperature, humidity, and unstable current.
  All guitars, basses, pedals, and amplifiers will have a 30-day warranty.
• The electronics of guitars and basses will have an extended warranty of 90 days.
• Suppliers, who generally reserve the right to decide whether to repair, replace parts or components (with identical ones), and/or substitute the item with an identical one, at their sole discretion.
• Exchanges, if warranted (at the store's discretion) and if the product is in optimal condition (including its packaging), are for store credit only.
• Credits do not apply to special orders or lay-away.