KSR Ceres ONE Mini Preamp Pedal – Used

Quick Product Summary

The KSR Ceres ONE is a compact high-gain guitar preamp designed to bring the character and response of KSR’s amplifier range into a pedalboard-friendly format. It combines aggressive modern gain, powerful EQ shaping and multiple voicing options with enough flexibility to run into a clean amplifier, effects-loop return, power amp or compatible recording setup.

This used example is in Good condition, showing visible signs of previous ownership and regular pedalboard use. Its compact footprint makes it particularly appealing for players building high-gain fly rigs or streamlined modern guitar setups.

What Makes the KSR Ceres ONE Special?

The Ceres ONE takes the core concept of KSR’s original Ceres preamp and condenses it into a significantly smaller enclosure while adding more available gain, an extended usable low end and a responsive playing feel.

Its Mode switch provides three distinct KSR-inspired gain voices, while the Feel switch changes the low-frequency response and attack between Thick, Tight and Fat settings. This makes it easy to tailor the pedal for everything from articulate rhythm work and modern metal to heavier, more saturated lead sounds.

Who Is It For?

The Ceres ONE is ideal for rock and metal guitarists looking for a compact, professional preamp with enough output and tonal flexibility to form the heart of a pedalboard-based rig.

It is particularly suited to downtuned and extended-range guitars, modern high-gain styles, direct rigs and players who want to run a preamp pedal straight into an amplifier’s effects-loop return or external power amp.

At A Glance

Feature	Details
Product Type	High-Gain Guitar Preamp
Condition	Used – Good
Format	Compact Floor Pedal
Gain Voicings	3
Feel Settings	Thick, Tight, Fat
Clean Section	Yes
Bypass Modes	True, Buffered, Clean
Mute Function	Yes
External Control	Yes
Power	9V DC

Condition Overview

Condition Grade: Good

This pedal is in good used condition, with visible cosmetic signs of previous ownership and normal pedalboard use.

It remains a strong working example suitable for rehearsal, recording and live performance.

What’s Included?

• KSR Ceres ONE Mini Preamp Pedal

• No power supply included

Technical Specifications

Specification	Details
Product Type	Guitar Preamp / High-Gain Distortion
Gain Control	Adjustable
EQ	Bass, Middle, Treble
Additional Tone Shaping	Presence
Clean Section	Tone and Volume
Mode Switch	3-Position
Feel Switch	3-Position
Mode – Up	Ares / Orthos Crunch
Mode – Centre	Artemis / Gemini Red
Mode – Down	Colossus Lead 1
Feel – Up	Thick
Feel – Centre	Tight
Feel – Down	Fat
Bypass Modes	True Bypass, Buffered Bypass, Clean Bypass
Mute Function	Press-and-Hold Footswitch
Main Input	1 x 1/4" Jack
Main Output	1 x 1/4" Jack
External Control	3.5mm TRS
Power	9V DC
Polarity	Centre Negative
Maximum Current Requirement	Approx. 100mA
Approx. Footprint	2.7 x 4.7"
Manufacture	Cincinnati, Ohio, USA

Power Requirements

The KSR Ceres ONE requires a suitable regulated 9V DC centre-negative power supply capable of providing at least 100mA.

The pedal should not be powered above 9V, as its internal circuitry generates the required operating voltages.

No power supply is included with this used pedal.

FAQs

What type of pedal is the KSR Ceres ONE?

The Ceres ONE is a compact high-gain guitar preamp designed to provide KSR-style amplifier tones in a pedalboard format.

Is this the same as the original KSR Ceres?

No. The Ceres ONE is a smaller reworked version with a streamlined control layout, increased gain and revised low-frequency response.

What does the Mode switch do?

The Mode switch selects between three gain voices based on KSR amplifier circuits: Ares/Orthos Crunch, Artemis/Gemini Red and Colossus Lead 1.

What does the Feel switch do?

The Feel switch changes the pedal’s attack and low-frequency response between Thick, Tight and Fat settings.

Does it have a clean channel?

Yes. Clean Bypass mode activates the dedicated clean Tone and Volume controls, allowing the Ceres ONE to function more like a complete compact preamp.

What bypass options are available?

The Ceres ONE offers True Bypass, Buffered Bypass and Clean Bypass, making it easy to integrate into several different types of rig.

Can it run directly into an effects-loop return?

Yes. The Ceres ONE is particularly well suited to running into the effects-loop return of an amplifier or directly into a compatible external power amp.

Can it be used into the front of a clean amplifier?

Yes. It can also be used into a clean amplifier input, although some EQ adjustment may be required depending on the amp.

Does it have a mute function?

Yes. Holding the footswitch activates the built-in mute function.

Can it be controlled externally?

Yes. A 3.5mm TRS control connection allows compatible momentary switching systems to control the pedal remotely.

Is it suitable for modern metal?

Yes. Its tight low-end response, high available gain and multiple voicing options make it particularly well suited to modern rock and metal styles.

Can it be powered at 18V?

No. The Ceres ONE must be powered from 9V DC only.

Is a power supply included?

No. No power supply is included with this used pedal.

What condition is this example in?

This example is graded Good, with visible signs of previous use consistent with a pre-owned effects pedal.

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