This guitar started life as a brand new Gear4music Knoxville Electric Guitar and has been professionally customised by myself to incorporate a LED infinity mirror. 

The guitar was purchased from the Gear4music store specifically for the following modification :-

  • The black guitar body has been precision milled using a CNC machine to create a semi-hollow body. The depth of milling has been minimised to retain good body strength whilst the guitar is under tension by the strings. 
  • An addressable RGB LED strip has been fitted around the inside perimeter of the semi-hollow body, held in place by 3D printed black PETG grips. This design allows for easy replacement of the RGB LED strip if required.
  • Two CNC milled acrylic mirrors fitted inside and on top of the semi-hollow body.
  • Hot Rail humbucker pickup fitted for minimal noise.
  • Original Gear4music volume pot, tone pot and jack.
  • ***Neck pickup fitted for sound to light effect***.
  • The back of the body contains the battery power switch and housing for four 1.2V AA NiMH rechargeable batteries (NOT INCLUDED) and the ATmega microprocessor. These are enclosed by a 3D printed black PETG cover. Access for inserting/removing of batteries can be achieved via the sliding 'maton design' silver logo cover.
  • The RGB LED light strip can be controlled using the keypad (CR2032 battery included) which is held in place by a 3D printed black PETG surround fitted to the back of the guitar body.

The above modification allows for normal use/playing of the guitar with no extra connections (e.g. USB or external power supplies). 

The fitted RGB LED strip is rated at 5 Volts and therefore four AA 1.2 Volt NiMH Rechargeable batteries are required:- 2500 mAh (or more) batteries are recommended and should keep the LEDs lit for around 3 hours when the LEDs are all white. However, choosing to light only red LEDs, for example, will minimise the battery power consumption and hence the LEDs operate for longer.


I have designed this guitar modification for the performing musician, hence it is robust and looks incredible on stage. However, this guitar could also be used as decorative wall art in a shop, restaurant etc...e.g. with a little soldering and basic electrical knowledge, one could further mod the guitar to run off a d.c. 5v (2 Amps or more) power supply instead of batteries.

The string height/action measurement images are on the 12th fret. The guitar weight is approximately 3.2Kg (was 3.3Kg before the mod). There are minor surface level scratches on the back of the guitar so this is listed here as being in excellent condition.

The price for this item is based on:-

  • time for research/development,
  • the cost of extra hardware parts + Gear4music guitar,
  • time spent designing the CNC files,
  • milling time, 
  • time designing the 3D printed parts,
  • 3D print time,
  • assembly and testing,
  • Reverb fees.

Please do message me if you have any questions/queries:-)

The guitar will be posted in a sturdy cardboard box (and inner cardboard box) with further paper packing. So double packed;-)


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Listed18 days ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more
  • Knoxville Electric Guitar
  • Infinity Mirror Guitar with sound to light
  • 2024

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SHERINGHAM, United Kingdom
Joined Reverb:2023

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