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"Product Information"
Manufacturer: BOSS (Roland)
Model: CS-3 Compression Sustainer
Product Type: Guitar Compressor / Sustainer Effects Pedal
Serial Number: 705800
Country: Japan
Accessories: Main Unit Only
Power Supply: BOSS ACA-Series AC Adapter / 9V Battery
Testing Level: Power On Tested
Condition: Used – Heavy cosmetic wear, scratches, paint deterioration, and missing LEVEL knob.
The BOSS CS-3 Compression Sustainer is a compact guitar effects pedal designed to control dynamic range and adjust sustain characteristics for electric guitar signals.
This unit is an older Japanese-made BOSS CS-3 with an ACA-type power supply specification.
The pedal features four controls:
LEVEL – Adjusts output level.
TONE – Adjusts tonal characteristics.
ATTACK – Adjusts attack response.
SUSTAIN – Adjusts compression and sustain characteristics.
The LEVEL control knob is missing, exposing the metal control shaft. The TONE, ATTACK, and SUSTAIN knobs are present.
The exterior shows extensive cosmetic wear, including paint deterioration, scratches, scuffs, and finish loss on the front and side panels.
The rear label confirms MADE IN JAPAN, and the serial number 705800 is visible inside the battery compartment.
The CHECK indicator is illuminated in the testing photographs, confirming that the indicator lights under the photographed test conditions.
Audio processing performance and individual control functions have not been fully verified.
Please review all photographs carefully before purchasing.
Heavy cosmetic wear throughout the pedal.
Extensive scratches and scuffs on the blue metal housing.
Widespread paint deterioration and surface wear on both side panels.
Paint chips and finish loss around the edges and corners.
Noticeable surface wear on the front panel.
Scratches and wear on the black control panel.
LEVEL control knob is missing; the metal shaft is exposed.
TONE, ATTACK, and SUSTAIN knobs are present.
Footswitch rubber pad shows signs of use.
Wear around the input and output jack areas.
Rear identification label shows age-related wear.
Battery compartment and battery connector are present.
Serial number label is visible inside the battery compartment.
No major external housing cracks are visible in the photographs.
This pedal has substantial cosmetic wear consistent with long-term use.
Please examine the photographs for the exact condition.
Testing Level: Power On Tested
CHECK Indicator Illumination Confirmed
Power-On Indication Confirmed
The CHECK indicator is visibly illuminated in the testing photographs.
The following functions have not been individually verified:
Compression Effect Performance
Sustain Effect Performance
LEVEL Control Response
TONE Control Response
ATTACK Control Response
SUSTAIN Control Response
Audio Input/Output Performance
Effect On/Off Switching Reliability
Battery Operation
Known Issue: LEVEL control knob is missing.
The internal condition and long-term operational reliability have not been verified.
The pedal is not represented as fully tested.
BOSS CS-3 Compression Sustainer Pedal
Not Included:
AC Adapter
9V Battery
Instrument Cables
Original Box
Instruction Manual
Replacement LEVEL Knob
Only the items shown in the photos are included.
No other accessories are included.
The cable shown in the testing photographs is testing equipment and is not included.
This is an older electronic effects pedal with age-related cosmetic wear.
Due to the age of the unit, internal electronic components, switches, potentiometers, capacitors, and other parts may have deteriorated over time.
Cleaning, adjustment, maintenance, or replacement of aging components may be required.
Only the specifically stated testing results have been confirmed. Long-term reliability and performance under all operating conditions are not guaranteed.
IMPORTANT: This unit is labeled for a BOSS ACA-series power adapter.
The rear label identifies the ACA-series adapter specification, and the DC input area is marked "USE BOSS ACA ADAPTOR ONLY."
This is an older ACA-type BOSS pedal, not a unit labeled for standard PSA-only operation.
Please use a power supply appropriate for this specific ACA-type pedal.
Do not assume that a standard standalone 9V PSA adapter will provide correct operation.
Some ACA-type BOSS pedals may operate in certain shared-power configurations, but compatibility depends on the power arrangement and has not been verified for this unit.
An incorrect power supply may cause improper operation or damage.
A compatible 9V battery is another power option specified for this model.
No AC adapter or battery is included.
The buyer is responsible for obtaining a suitable power source.
Please verify compatibility with your guitar, amplifier, effects pedal setup, and power supply before purchasing.
This pedal uses standard 1/4-inch instrument input and output connections.
Compatibility with all power supplies, instruments, and signal-chain configurations has not been verified.
The item will be carefully packaged to help protect it during international transportation.
Shipping will be arranged from Japan.
Delivery times may vary depending on the destination country, customs processing, and transportation conditions.
Import duties, taxes, VAT, customs clearance fees, and other charges may apply depending on the destination country.
Any applicable charges not collected at checkout are the responsibility of the buyer.
Customs regulations and import requirements vary by country.
Please check your local import regulations before purchasing.
Please carefully review all photographs, the item description, condition details, included items, and operational testing information before purchasing.
This is a used, older electronic effects pedal with substantial cosmetic wear.
The LEVEL control knob is missing.
The CHECK indicator illumination has been confirmed, but complete audio operation and individual control functions have not been verified.
Maintenance or repair may be necessary depending on the intended use and actual operating condition.
The pedal requires a suitable ACA-type power arrangement or compatible battery.
No power supply, battery, or instrument cable is included.
Only the items specifically listed in the Included Items section are included.
If you have questions about the condition, missing knob, power requirements, or compatibility, please contact us before purchasing.