Category Archives: Vintage amps

70’s Vintage Marshall JMP 100W Guitar Amplifier Repair

By Frank | Published: April 30, 2015

We often get 70’s Marshall JMP amps in for repair; these are excellent rock amps and are still very good value for money. Ahe major issue with these amps are the voltage and impedance selectors which are prone to falling out. Someone had done a really good job of wiring the mains selector in this […]

Also posted in Amp repair, Guitar Amps, London | Comments closed

Fender Blackface Deluxe Reverb Repaired By JPF Amplification

By Frank | Published: January 8, 2015

We’ve repaired hundreds of vintage Fender amps, and it’s always a pleasure to get these classic amps back in tip-top working order. It’s a testimony to Leo Fender that so many Fender amps from the 1960’s are in use today. Here’s a picture of the inside of a vintage 1960’s Fender Blackface Deluxe Reverb we […]

Also posted in Amp repair, London | Comments closed

Two Marshall JCM900 Amps Repaired At JPF Amps

By Frank | Published: December 8, 2014

Here are a couple of Marshall JCM900s guitar amplifiers we’ve had in our workshop for repair in the last few weeks.     The one on the bottom simply need new output jack. Unfortunately the one on the top needed a new mains transformer and power valves, a significantly more expensive repair. These are original early 90’s amps, […]

Also posted in Amp repair, Guitar Amps | Comments closed

More safety earthing issues. VOX AC30 and Yamaha PA

By Frank | Published: April 10, 2013

A couple of safety earthing issues I’ve seen over the last few weeks. Here’s the safety earth from a recent repair on a JMI era VOX AC30. Suffice to say, if you were going to solder the safety earth to something, then the chassis might have been a better bet…… OK, that was a vintage […]

Also posted in Amp repair, Guitar Amps, JPF Amps | Comments closed

Super Rare Wem Deep Blue Amplifier

By Frank | Published: September 20, 2012

It’s not often you see one of these. No-one I know had one seen before. It is of course the Wem Deep Blue. Looks fairly conventional from the front.   But what’s that in the back. A Copicat tape echo!   We’ve only found one other picture of a Wem Deep Blue in the internet […]

Also posted in Amp repair, Guitar Amps | Tagged , , , | Comments closed

How to wire mains earth to a US amp with 2 prong cord. NOT!

By Frank | Published: May 3, 2012

When you think you’ve seen every conceivable bodge job on the planet, something comes in that beggars belief. Here are some snaps from an amp I’ve just worked on. The amp is US voltage Ampeg Gemini. Someone had installed a step down transformer into the bottom of the cabinet to allow operation from UK mains. […]

Also posted in Amp repair, Guitar Amps | Comments closed

Vintage Guitar Fair, Exeter 3rd/4th December

By Frank | Published: December 1, 2011

Just a quick reminder that JPF Amps will be at the Vintage Guitar Fair, this weekend (3rd/4th December). We will be sharing a stand with Zilla cabs. We will be offering a 10% discount on any amps purchased/ ordered at the show. We will the following vintage amps for sale: Fender Deluxe Reverb II (£8o0), […]

Also posted in Guitar Amps, JPF Amps | Tagged , , | Comments closed

Angel Music’s wall o’ Marshalls

By Frank | Published: August 11, 2010

Angel Music seem to have accumulated several Marshall amps at the moment, so here’s a snap of the wall o’Marshalls. Quite an impressive line up!

Also posted in Guitar Amps | Comments closed