Tremendous Upgrade

I’ve now put some 50hrs on my newly upgraded Cambridge Audio power amp. When I first got it home, after the upgrade, I was not sure what exactly to expect but the difference was immediately obvious. Within 20 minutes I detected improvements across the frequency range. Bass and midrange were most noticeably improved and my […]

Astonishing

In the audiophile world we talk about the law of diminishing returns; increasing investment for a marginal gain. When my MF A1000 came back from John there was nothing marginal about it. As soon as we powered it up for the first time the difference was astounding. I thought I already had a great amp […]

Craftmanship

“I admire the engineering skills and craftsmanship almost as much as I admire the sound of the Upgraded Graaf. It takes great skill knowledge and knowhow to do an upgrade on a piece of equipment. You can go to far and totally destroy the sound you loved so much. Having Knowledge and understanding of component’s […]

A300

Recently had JS Audio do a stage 2 upgrade on my 17 year old A300 integrated amplifier and the results are very impressive. Initially it sounded much more dynamic with far more detail and control and as it has run in continues to get better and better. It has brought to life a 3 way […]

MF X-Ray 24bit CD full upgrade – worth every penny!

My CD player had developed a fault that was tripping the mains. I discovered JS Audio repairs by searching for my fault, and gave John a ring. It is such a good CD player I opted for the full refurb/upgrade. Now I’ve been playing the renewed player for a couple of months, all I can […]

Excellent service and upgrade.

What can I say, this (previously tired) old amp sounds much better than I can ever remember. Better control at the bottom end, and the overall clarity and projection is stunning. I know John was impressed with the upgrade suffice to say I’m amazed at the transformation. I can’t recommend Johns upgrade and repair service […]

A3

In response to the quote below. You are the only person to have left any negative feedback whatsoever out of hundreds, have you at least tried telephoning as they may have not received you email requesting a quote!!!!

upgrade

John upgraded my musical fidelity amplifier in december 2018 ,its now the end of january and the results are tremendous the amplifier has so much more depth and clarity now hearing my music collection in a different light more bottom end everything much more gripping. .many thanks john.

Amazing service and Upgrade!

My Musical Fidelity A5 CR Power Amplifier one day went “Pop!!!” and smoke started emitting from the unit! and tripped all the electric out in my house! I stupidly took the unit to a local repair guy (who has a shop!!!) who diagnosed fault as “Tordial Transformer gone, cant get parts, could maybe make one!” […]

Musical Fidelity X-series upgrades

My Musical Fidelity X-T100 amp had developed a couple of issues – interference on one of the speaker outputs and a sometimes unresponsive channel select button. I wanted to get the unit repaired and having spoken to John I decided that it made sense to go for an upgrade at the same time. John had […]