[Modern Klon-style] Keeley Manis Overdrive brings a new "transparent distortion" experience [Sound demo and reviews]

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"Not a single drop of clean is muddied, and yet the moment you play it, the 'core' stands out."

Keeley Electronics offers a new answer to guitarists who have been searching for such an ideal.

Keeley Manis Overdrive

Based on a natural tone reminiscent of the "transparent" style of the past, the Germanium switch and Bass+ switch allow you to instantly tune the low range and saturation. Moreover, it has a feature that was "one step away from being needed" for live performances, such as the ability to switch between true bypass and buffered by holding down the foot switch. This article thoroughly examines the specifications, sound characteristics, and actual reviews of the Manis, and unravels its value.

Keeley / Manis Overdrive

Keeley Electronics

35,200 JPY(TAX+) (As of 2026:05, March 16, 08 | Rakuten Market research)

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Keeley Manis Overdrive | Specifications and Features

Keeley Manis Overdrive Basics

Brand	Keeley Electronics
Model	Manis Overdrive
Type	Overdrive (Hard Clipping Booster)
Control	Tone, Drive, Level knobs Bass+ toggle switch (low frequency boost) GE Diode/Trans toggle switch (clipping switch)
Bypass Method	True bypass / buffered bypass switchable (hold footswitch to switch modes)
电源	DC 9V to 18V (center negative) * Equipped with internal boost circuit, supports 18V operation Current consumption approx. 17mA, cannot be powered by batteries
Size / weight	Approx. 66(W) x 49(H) x 127(D) mm (excluding protrusions) Weight: Approx. 290g
Country of manufacture	Made in the USA, with an aluminum housing and a robust metal foot switch
Price	￥35,200 (tax included) *Domestic sales price

Looking at the specs, we can see that the Manis Overdrive is a model based on the legendary transparent overdrive circuit with modern improvements.

The design is conscious of the needs of players down to the smallest details, such as the additional switch hidden in the simplicity of the 3 knobs and the high voltage compatibility. The compact yet sturdy housing and switching method are also made with the latest technology, making it safe to use from the stage to the studio.

Keeley Manis Overdrive | Features and Functions

Germanium clipping switch

The clipping element of the circuit can be switched between a germanium diode and a germanium transistor. When the switch is lowered to set it to a diode (indicated as "GE Diode"), it reproduces the glossy crunch sound with compression that is characteristic of traditional transparent overdrive. On the other hand, when the switch is raised to switch to a transistor ("GE Trans"), it reproduces the sustain and the sound when driven.SaturationThe amplifier has more power, a softer attack, and a response closer to that of a tube amp. The mids are more gently pushed out than when using a diode amplifier, resulting in a more organic and natural distortion. The amplifier also responds better to the strength of your picking, allowing you to enjoy an overdrive sound with a rich range of expression.

"Bass+" switch

Equipped with a toggle switch for low-frequency boost. Raising the switch (Bass+ mode) lowers the cutoff frequency by one octave and increases the output.+3dBBy raising the switch, the bass range is reinforced thickly. This is a useful function that eliminates the lack of bass that is easily felt with single-coil guitars, and gives the sound depth and power. In "Stock" mode with the switch lowered, the response characteristics are the same as the original Klon series, with a tight, mid-centered response, allowing you to maintain a tone that is clear in the band. Since you can instantly adjust the bass output according to the mood of the song and the guitar you are using, it will be useful for live performances.

Bypass mode switching (True/Buffered)

True Bypass andBuffered bypass (silent switching)Another appeal of Manis is that you can switch between the traditional true bypass and silent switching via the buffer by simply pressing and holding the foot switch (for about 2 seconds). The buffer prevents signal degradation even when off, making it less likely for the sound to become thin even with a long chain of effects, and also minimizes switching noise. On the other hand, if you want a pure direct sound or want to avoid the tone changes of vintage pedals, you can set it to true bypass. Since it can be quickly switched with your feet, you have the flexibility to choose the optimal mode according to your rig and situation.

18V power supply and high headroom design

While it runs on a standard 9V adapter, it also supports voltages up to 18V. It has an internal charge pump circuit for boosting the voltage, and is characterized by its large headroom (the amount of volume that can be handled without distortion). Driving it at a higher voltage increases the dynamics when playing clean, making it less likely to be crushed even with powerful picking. This is particularly advantageous when using it as a booster, as the sound image does not collapse even with a high-volume clean boost. Although it supports high voltages, the circuit is well protected, making it a safe design that is less likely to break down even if 18V is accidentally input.

As mentioned above, the Manis Overdrive achieves both "faithful reproduction of the original Klon sound" and "modern function expansion". It is impressive that it firmly grasps the points that traditional users felt "I wanted!", such as sound quality tuning by utilizing germanium material, low-frequency compensation switch, and buffer.

The housing is also carefully manufactured in Keeley's own factory in Oklahoma, USA, and is "crafted like an instrument with precision."** The high manufacturing precision and sturdiness are unique to Keeley. This model will meet the high expectations of the next generation of Klon pedals that can withstand professional use.

Keeley Manis Overdrive｜Sound demo

Keeley / Manis Overdrive

Keeley Electronics

35,200 JPY(TAX+) (As of 2026:05, March 16, 08 | Rakuten Market research)

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Keeley Manis Overdrive | Review and reputation

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Positive reviews

"Thanks to the Germanium clipping and bass boost, I'm happy with the versatility to create the ideal drive sound for any amp. I can use it with confidence in the backline at live shows."
"Compared to conventional Klon pedals, this is an overdrive that is surprisingly transparent and thick. It brings out the natural sound of the guitar while adding just the right amount of punch, so it's got a presence that makes you want to leave it on all the time."
"When you switch to GE transistor mode, the sustain is clearly extended, and you get a comfortable distortion like when you push a tube amp. Thanks to Bass+, the sound doesn't get thin even with single coils, so it really has expanded the range of sound creation with just one unit."

Negative reputation

Negative reviews

"When you turn down the tone and set it to a darker setting, the impression can become a little muffled. If you're using it in a band, you may need to be careful about how clear it is."
"I'm satisfied with the features and sound quality, but the price seems a little high. It would have been better if it was a little more affordable compared to other Klon clones."

Keeley Manis Overdrive | The value of a transparent OD that inherits and evolves the legend

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People who want a booster that makes the most of the original sound
If you want to boost the sound pressure without compromising the original tone of your guitar or amp, Manis is ideal. With its natural push-out unique to "transparent" overdrive, it doesn't feel strange even when left on all the time as a clean boost. Because of its transparent sound quality, it is easy to use in any genre, from jazz and pop to blues.
Those who want a versatile drive that can be used with any amplifier or location
It is also suitable for players who need to create sounds on the spot, such as when using rental amps at live venues or equipment environments at sessions. The Germanium and Bass+ switches allow you to quickly and appropriately match with any amp, so you can get close to the ideal drive tone even with unfamiliar equipment. The high level of adaptability that makes it possible to say "If you have one, you can feel safe in any situation" will be a great weapon.
People who use single coils and are worried about the thin sound
Manis is also perfect for users of single coil PU guitars such as Strats and Telecasters who feel that "if only the bass was a little thicker..." By turning on the Bass+ switch, you can instantly increase the volume of the low range, and you can reduce the worry that the sound will be buried thinly even in a band ensemble. By turning it off, you can return to the original tight sound, so you can flexibly switch according to the song.
Those who want to get the legendary "Klon" sound
For those who long for the tone of the long-standing Klon Centaur-style overdrive, the Manis Overdrive is an attractive choice. Just like the original, it is easy to use with three knobs, and you can get a faithfully reproduced mystic sound. The additional functions mentioned above expand its usage scenarios even further. Even if you are interested in Klon but it is too expensive, you can easily consider the relatively affordable Manis. This unit has been upgraded while following the tradition, and is a highly satisfying first full-fledged overdrive.

The Keeley Manis Overdrive is a noteworthy product that brings back the legendary overdrive sound that guitarists long for in the modern era while incorporating practical functions. While retaining the rich tone and response of the original, modern improvements such as the change in texture due to the switching of germanium materials, the low-frequency adjustment function, and the smart bypass method shine everywhere.

The result is a versatile overdrive that is easy to use regardless of genre, and will be a reliable companion for a wide range of players, from professionals to amateurs. Although it is not cheap, it has the sound quality and flexibility to match, and the high-quality build quality that is unique to Keeley, making it a worthwhile pedal that you will not regret buying. The Manis Overdrive is a perfect blend of tradition and innovation, and is sure to become a new staple on your pedalboard.

Keeley / Manis Overdrive

Keeley Electronics

35,200 JPY(TAX+) (As of 2026:05, March 16, 08 | Rakuten Market research)

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[Modern Klon-style] Keeley Manis Overdrive brings a new "transparent distortion" experience [Sound demo and reviews]

Keeley Manis Overdrive | Specifications and Features

Keeley Manis Overdrive | Features and Functions

Keeley Manis Overdrive｜Sound demo