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Marshall Plexi / JTM 50 / 1966 / Black / Amp

OK, I know this will not sell for £5k so don't be afraid to make an offer - I had to start somewhere!

​This is without a doubt a stunning sounding and pretty rare original Marshall JTM plexi amp. It is a NICE condition circa 1966 Marshall JTM-50 'Black Flag' model plexi panel amp it is a superb sounding guitar amp and has the classic GZ-34 tube rectifier circuit making this a rarer, early version of the JTM-50.

The only major change is the output transformer has been replaced some time ago, I have been informed the OP transformer should be a Drake 784-128 vs the 784-139 that is in there. This particular Drake works very well indeed and likely to be from a head a few years later. AC transformer is still original and it can happily run at all AC voltages including 115V for USA usage. It has been a working and gigging amp most of it’s life so other components may have been replaced to keep it running.

​There was a different AC inlet on it at some time but a correct 3 pin Bulgin is back on there now. Logo is an excellent quality repro and one of the output jacks has been replaced with an XLR. The new OP transformer has a 4 ohm tap where the original 100v line would have been making it a useful change.

It has just been serviced, biased and set up by an independent Marshall expert and is ready to rock. It sounds just as it should and if you are seeking the classic, tube rectifier plexi Marshall sound of the mid 60’s you can look no further...

Knobs, covering and lettering are in great shape and are also all original. Plexi panel is also original and in great shape too. Rear panel shows a couple of band names on the back but this only goes to add a bit of charecter to what is a great amp and with the right treatment I am sure they can be removed and the cabinet restored to all it’s former glory. Maybe one of these bands was famous….?!

Instrument sold

ATB Guitars, UK  

Contact name:
Mike Long
Brands:
Languages:
English
Specialties:
Vintage Gibson, Fender and Martin from 1940's-1970's
Opening hours:
24 hours

Hello we’re ATB Guitars.


We are one of Europes leading sellers of vintage and rare guitars. We only sell vintage Gibson and Fender electric guitars from 1950 until 1975 and have an extensive inventory to browse in our bricks and mortar store in Cheltenham, UK or in our online web store.

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Should you not be absolutely delighted with your purchase you may return it to Cheltenham, at your own expense, within 7 days from the date of delivery for a full refund. The item must not have been altered or tampered with in any way, and it must arrive in the same condition as it left us.

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We ship within the UK by Royal Mail Recorded (small items under 2Kg), TNT or UPS and Worldwide by Royal Mail Airmail Signed For (small under 2Kg) Parcelforce, UPS or FedEx. All shipping prices include expert packing, cartons and packing materials but not insurance which is typically around 2% of items value. Currently approx shipping rates for a single guitar are as follows:

UK excluding Northern Ireland and Highlands £29
Most of mainland Europe £49
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