Allotrope audio repairs and PAT testing
Vintage & contemporary audio equipment repaired, serviced & modified.
Bespoke equipment manufactured.
We have a very large selection of test equipment.
We have many common & generic spare parts in stock.
Need your studio, touring, office or rest area equipment PAT tested?
We are now City & Guilds Qualified.

We are based in the Sheffield/Chesterfield area but we travel anywhere in the UK, with regular visits to studios in the West Midlands, Bristol & London areas.

Keep up to date with where we are & when on facebook.

Contact to discuss just what is possible. With 25 years experience of repairing & modifying audio equipment on tour, in the studio & workshop, AAR has all the knowledge to repair your loved rare or vintage instruments, amplifiers & effects:
  • We understand the need for servicing your touring equipment to a high roadworthy standard 
  • We can make bespoke versions of your favourite signal processors so you don't have to
    subject the originals to the rigours of touring
  • We will also modify devices to suit all your musical requirements


 Why Allotrope?  CLICK




A small selection of equipment recently repaired in the workshop:

Electronic Dream Plant (EDP) Wasp picture. Farfisa Compact Combo Organ picture.      H&H Tape Echo picture. Roland RE201, 301, 501, 555 Tape EchoEchoplex & watkins coppycats. Vox AC30,AC15 Guitar Amplifiers. Vox organs, Gem Jumbo. Wurlitzer EP 200a, & b Keyboard.Ampeg Reverb Rocket Guitar Amplifier. Drawmer verious studio effects Fender Deluxe, Champ, Twin Reverb, Bassman, Guitar Amplifier's. Westrax Vintage Cinema Amplifier. Korg MS20, Univox 700s Juno 6, 60, 106, synthesisers. Various Marshall, Hi Watt & Sound City Amplifiers. Original & Jimmy Hendrix Fuzz Face. Dunlop Cry Baby Original. EH Electric Mistress & 16 Second Delay. Pro Co Rat. Colorsound Tonebender, Overdriver & Wah Wah. Conn Electric Band. Hammond M104. Leslie 33, 122, 145, 147, 330, 760. Yamaha DPM7 Mixer.   Moog Mini. Moog Moog voyager. Moog Phatty. GEM S3 Turbo Modifications to Trident Series 70 (Beth Gibbons) Maintenance to a DDA AMR 24 Desk - State of art studio's Bristol (Geoff Barrow, Portishead, Beak>) Restoration and Installation of DDA AMR 24 Desk - J & J Studios (Jim Barr, Get The Blessing)









Keyboard repair, synth repair, synthesiser repair, synthesizer repair, amp repair, amplifier repair, guitar amp repair, guitar amplifier repair, vintage Keyboard repair, vintage synthesiser, repair vintage synthesizer repair, vintage amp repair, vintage amplifier repair, vintage guitar amp repair, vintage guitar amplifier repair, Korg repair, vintage Yamaha repair, Moog repair, Roland repair, OSC repair, EDP repair, Hammond repair, Hammond Organ repair, Wurlitzer repair, Marshall repair, sound city repair, colorsound repair, Dunlop repair, Fender repair, Electro Harmonics repair,  vintage Electro Harmonics repair, vintage fender repair, Fender amplifier repair, Valve amplifier repair, Valve amp repair,   Ampeg repair, vintage Ampeg repair,  Access Music Electronics repair, Analogue repair, Analog Lab repair, Analogue Solutions repair, Analogue Systems repair, vintage Analogue repair, Experimental electronics, music instrument repair, Experimental Music, Experimental effects, Experimental synthesiser, Experimental Amplifier, Baldwin repair Canine's Virus repair, Akai repair, Alesis repair, Big Briar Theremins repair, Casio repair, Clavia Digital Musical Instruments repair, Combo organ repair, Cwejman Sound repair, Doepfer repair, Doepfer Musikelektronik repair, Electronic Music Studios repair, Music Studios repair, Elektron ESI repair, Elka repair E-mu repair Ensoniq repair, Emulator repair, Ensoniq Corporation repair, Evolution repair Farfisa repair, vintage Farfisa repair, FATAR repair Retro Synthesizers repair Genelec repair Generalmusic repair,  General music repair, GEM repair, Gibson repair, Hammond Suzuki repair, Kawai repair, Kenton Electronics repair ,NetSynth Pilot repair, vintage Korg repair, Kurzweil repair, Lowrey Organs repair, Leslie speaker repair, vintage Leslie repair, Leslie cabinet repair, Mellotron repair, Chamberlin repair, Metasonix repair, Vacuum tube synthesizers, Repair, Moog Music repair, vintage Moog repair, Novation repair, Oberheim repair, Optigan repair, Organ repair, Peavey repair, Pianovelle repair, PPG repair PPG Instruments repair, Roger Linn Design repair, vintage Roland repair, rotating speaker cabinet repair, Samick repair, Schouw repair, Sequential Circuits Synthesizers repair, Studio Electronics repair, Synthesis Technology repair, Technics repair, Technosaurus repair, Viscount repair, Vox repair, Vox continental repair, Waldorf Electronics repair, Wersi Keyboard Systems repair, Wizard repair, Wasp repair, Yamaha repair, Yorkville repair, Zebranalogic repair, Stomp box repair, guitar effect repair, Vintage effects repair, vintage pedal repair, vintage effect pedal repair, Philicorda repair, Mixing desk repair, studio equipment repair, studio Amplifier repair, Pre amp repair, pre-amplifier repair,  vintage pre-amplifier repair, vintage musical equipment repair, tube amp repair, tube amplifier repair, Studio effect repair, outboard effect repair, Soundcraft repair, Studiomaster repair, Midas repair, Dallas Abitor repair, Eventide repair, Hiwatt repair, Tape echo repair, Echo plex repair, Copy cat repair, Binson repair, H and H repair, H&H repair, Altec Lansing repair, JMI repair, Laney repair, Leem repair, Mesa boogie repair, Maestro repair, Watkins repair, Dean Markley repair, Hohner repair, Ibanez repair, EMI repair, RCA repair, Revox repair, AEG repair, Danelectro repair, Grampian spring reverb repair, ARP repair, Rickenbacker repair, Barth Vocoder repair, MXR repair, Mullard repair, Amperex repair, Telefunken repair, Oberheim repair, Neve repair, AMS repair, Urei repair, DBX repair, SSL repair, Helios repair, MCI repair, AKG repair, Fender Rhodes repair, Lafayette repair, Studer repair, Gauss repair, Russco repair, Ampex repair, ferrograph repair, Tapco repair, Scully repair, Quad-Eight repair, Dokorder repair, Audio Designs repair, Crown repair, Amcron repair, API repair, Fairchild repair, Pultec repair, Manley repair, Sound Electronics corp repair, Tascam repair, Bryston repair, TOA repair, Allen & Heath repair, Amek repair, Mackie repair, Soundtracs repair, Trident repair, Hill audio repair, Apogee repair, Lexicon repair, Avalon repair, TC Electronic repair, Electro-Voice repair, Neumann repair, Elco repair, EMU repair, MOTU repair, Rane repair, Electrodyne repair, Klark-Teknik repair, Uher Stelavox repair, EMT repair, TAC repair, EAB repair, NTI repair, Selmer repair, ITI repair, ITT repair, BBC repair, Univox repair, Hoffner repair, Jen repair, Thomas repair, CBS repair, Electronic Dream Plant repair, Linn Electronics repair, Sequential Circuits repair, PAiA repair, Crumar repair, Siel repair, Siemens repair, Jennings repair, JHS repair, Small Modular Systems repair, SMS repair, Cheetah repair, Logan repair, Lovetone repair, Oxford repair, Victor repair, Godwin repair, AceTone repair, B.M.E. repair, Luxor repair, RSF repair, AME repair, Electra-String repair, Cordovox repair, Hohner repair, WEM repair, Allison Research repair, Tannoy repair, Carlsbro repair, Selmer repair, Philips repair, Synare repair, Dynacord repair, Crate repair, Audix repair, Westfield repair, Orange repair, Telsa repair, Sennheiser repair, AAR vintage audio repair. AAR is a Huw Williams enterprise along with Portatech & Intune Audio Services.