Flattley The Ace guitar Boost effects pedal

Flattley The Ace Boost

A great clean boost pedal from a UK maker            

“The Ace” is a clean boost/buffer with the twist of having the Flattley “Solaris Pro” tone stack allowing it to be used as a clean boost (tone at middle), a treble boost (tone clockwise) or bass boost (tone anti-clockwise) and all stops in between.

A handmade, hand wired, boutique custom guitar pedal manufactured in the UK using only the highest quality components.

Here’s what they say about it:

It can be used at the front end of a signal chain to push distortion pedals harder and also pre emphasise the frequencies to be distorted.

Placed in mid signal chain, it can help pedals that are a bit dull and quiet, such as vintage pedals by locally boosting gain and tone which in turn brings them to life.

Put last in the signal chain, the pedal can increase the volume of a chain of pedals, enhancing the tone by increasing the presence of a lead tone by lifting the whole sound whilst soloing.

At the mid tone setting, the pedal does give a slight lift in tone that will make most single coil guitar owners smile, push it really hard with another pedal and it will give a soft clip in a pleasant way. It will also help a passive bass guitar sound beefier, give great late night jazz tones on humbucker guitars with the tone fully anticlockwise, nice funky single coil sounds with the tone setting just past middle.


Volume: Controls the output of the pedal from zero (use as a kill switch), unity gain is around midway and max gives quite a lift to the output. It’s second function is to act as a gain recovery stage for the tone control.

Tone: Midway the tone control is effectively flat and the setting you would use for a straight lift in volume. Either side of midway there is a sweet spot allowing tone to be a little dark (anticlockwise) or have a bit more sparkle (clockwise).

Tone fully anticlockwise, the pedal works as a bass boost, fully clockwise it becomes a treble boost with the volume control being used as a gain compensation control as bass boost requires a reduction in overall gain and treble boost usually requires an increase in overall gain.


The Ace comes in a 125B Enclosure (LxWxD): 119x64x40mm (including lid) (69 x 2.52 x 1.57 inch)
Standard negative centre, -9v dc tip power supply unit/power brick required
No internal 9v dc battery function
20mm anodised aluminium control knobs
Blue halo light ring installed
The Ace comes with a black custom etched aluminium foot topper
This edition comes in silver and black graphics.

More info and to purchase at Flattley

Yours for £221

14 February 2023

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