Guitar Amplifier Repair in Newark (Nottingham)

Update October 2025: We’ve moved! Onwards and upwards! As the business expands we’ve moved to a new premises to Unit 15 Jessop Way, Newark, NG24 2ER. There’s a bit backlog for standard turnaround jobs, but Same day turnaround jobs are still available on the express service for those customers who need urgent amp repair. This service is subject to parts availability.


Fender Hod Rod Deluxe Repair
Fender Hod Rod Deluxe Repair

This is the world’s most popular valve amp [citation needed], meaning I get a Hot Rod Deluxe Repair quite regularly. The amp has two common faults, which are well documented. The first, and most common is the grey ‘IC’ (Illinois capacitor) electrolytic caps which are prone to failure. Fender use these presumably because they’re the ... Read more Fender Hod Rod Deluxe Repair

Blackstar Series One repair S1-104EL34
Blackstar Series One repair S1-104EL34

This Blackstar Series One repair from February was a bit of a mess! The amp had unfortunately received the unhelpful care of another repairer who had left the amp in a terrible state. If you don’t like to see damaged PCBs, look away now. It was brought to me because it was blowing fuses at ... Read more Blackstar Series One repair S1-104EL34

Marshall Silver Jubilee repair – Marshall model 2558
Marshall Silver Jubilee repair – Marshall model 2558

I was quite intruiged when a Nottingham guitarist brought this Marshall Silver Jubilee repair to my Newark workshop. These amps have taken on a bit of a legendary status, due in no small part to their association with Slash and Joe Bonamassa. I love how this amp looks, and it’s got an interesting tone control ... Read more Marshall Silver Jubilee repair – Marshall model 2558

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Hi I’m Rowan, owner and main engineer at Keld Ampworks. Keld Ampworks is a guitar amplifier repair service repairing audio electronic equipment in Newark (near Nottingham). If you can use it on a stage or in the studio, then I can repair it!   I provide a fast and friendly service that is competitively priced. Some repairs can even be completed while you wait! Please have a look around, I’ve repaired amplifiers by all of the main manufacturers (Fender, Marshall, Vox, Peavey, Laney, Mesa Boogie) and kept my customers’ boutique and unusual designs (Cornford, Carvin, Dr Z) in top condition. 

Most of the amps that I fix are valve amplifier repairs, but I do see plenty of solid state amplifiers too. I’m happy to work on modern amplifiers like Line 6 and Hughes and Kettner, but equally comfortable restoring vintage amps, I’ve got a particular love for pre top boost 60s AC30s and old Fenders. Besides guitar amps, I also repair bass amps, keyboard amps and do some of the more complicated guitar/bass wiring.

I’m pleased to say that I’ve had many happy customers – if you’d like to check out some reviews of my service, please visit the feedback page (pun intended!). If your beloved guitar amplifier or bass amplifier is in need of repair, servicing, upgrading or modifying, then please do get in touch to discuss your needs.

PA Equipment repair and Keyboard repair

Update January 2024: Thanks to an increase in the team and a larger premises I can now also take on PA equipment, speakers, keyboards and PA Mixer repairs. At this time (July 2025) I’m not available for work on DJ or lighting equipment.

Valve HiFi Repair

We run a specialist valve HiFi repair service in house. For more information, please visit the valve HiFi page. At this time, we do not repair soundbars, home theatre or transistor HiFi equipment.

My History in Guitar Amp Repair

Keld Ampworks Guitar amp repair was established in 2010 and moved to Newark (Nottingham) in 2012. Before Keld I studied with the Maughan Amplifier Company, a well-respected guitar amplifier repair and manufacturer in the North of England. I gained extensive experience of amp servicing in this position and during my time doing repairs and sales for Gear4Music in York. Although guitar amps are relatively simple, when repairing gear it’s important to have a thorough understanding of the theoretical as well as the practical and for this reason I completed a Masters in Electronic Engineering from the University of York.

As well as the repair and design of guitar and bass amplifiers, I worked for 7 years as a development engineer designing amplifiers for Ampetronic Ltd, a world-leading audio engineering company specialising in Audio Frequency Induction Loops. Keld Ampworks became so busy that I had to leave that job to focus on the repair industry. In 2023 I moved the business to a new industrial premises in Farndon. This move allowed me the space to expand the repair team in 2024, taking on a second engineer to repair guitar amps.   In October 2025 we moved again, to a larger premises in Newark. 

As an active musician, playing with local funk band Fat Digester (comin’ to get ya!), and gigging constantly since age 17 in a range of different bands, I really do understand how crucial it is to have your gear in top condition!

Recent Amp Repairs

Here’s the work I’ve been doing recently:

vintage big muff pi repair triangle
A really nice example of an early Triangle Big Muff Pi repair. From googling, I guess it is late 60s, Read more
DSL40CR-reverb-modification
One common complaint I’ve heard from Marshall DSL40CR owners is the underwhelming reverb. To be fair, Marshall have never been Read more
DSL40CR repair
I don’t often see a DSL40CR come through with this kind of erratic behaviour - it was one of those Read more
Recently, I had the pleasure of completing a WEM Copicat tape echo repair on three different units, each presenting its Read more
I recently repaired a Hughes & Kettner Switchblade amp that had a shorted mains transformer, causing power failure. Thankfully, I Read more
AER Compact repair
Recently, I had the pleasure of repairing an AER Compact 60 amp that was experiencing frustrating audio dropouts. The owner Read more
Line 6 Helix ground loop issue
Here's a fix for a Line 6 Helix related ground loop problem I did for a customer a couple of Read more
Seymour Duncan Powerstage 170 repair
This Seymour Duncan Powerstage repair was a pretty simple job and was turned around next day for the customer on Read more
I recently got a Roland JV2080 in for repair. The cause of the fault was the RH-1 power supply board. Read more
The MIDI standard that's used to control loads of guitar equipment seems really complicated. Most devices will give you a Read more