Unbranded Marshall JTM 45 MK IV Bluesbreaker Model 1962

Описание: Check out the amp here: https://maharsvintageguitars.com/coll...

Check out the guitar here: https://maharsvintageguitars.com/coll...

This Marshall Bluesbreaker is a bit of an enigma.

The amp is built with vintage parts, including the transformers. Mustard caps date to 1967 and 1968. Even the pots are vintage, though one is a modern replacement.

By late 1966 – early 1967, Marshall stopped using the GZ34 tube rectifier in all the models and started using a solid state rectifier instead. This amp is tube rectified, and two KT66 power tubes serve up the goods as did Marshalls from 1965 to 1967.

The cab has the appointments of Model 1962 amps from 1968 and 1969. The cabinet appears to be a reproduction. It is simply too clean and perfect to be from the late 60s.

The chassis is similarly clean. It is dimensionally correct, and the placement of mounting screws, etc is correct as well. All the screws that hold parts to the chassis look vintage.

The speakers do appear to be from the late 60s. They were reconed at some point and the original gaskets were replaced, removing the date codes that would help me nail down exactly what year they were made. The cable and plug that connect the speakers to the amp appears to be original 60's Marshall issue.

I bought this amp as part of a collection. There is no history that passed to me with the amp. I've stared at it, reviewed the pics, compared to vintage examples online. Perhaps someone had a mid-60s Bluesbreaker with a badly damaged chassis, and they re-housed it in a repro chassis, found a repro cabinet, and thus resurrected this beast.

I've had a couple 60s-looking Marshalls that were counterfeit reproductions - likely made by Music Ground in the UK. They became notorious for these builds as they were passed off as the real thing. There were signs with each of their amps that they were fakes, but they were quite realistic just the same. Unlike this amp, the parts were close, but not exactly correct compared to the originals. Transformers were robbed from Selmers and other vintage UK built amps. This amp's parts are correct. My experience with the counterfeit/copy amps gives me confidence in making the conclusion I did above.

The amp sounds absolutely amazing. There is no substitute for the tone you get from this configuration. The clean sounds are rich and punchy - you can feel the air move! The natural output stage overdrive is unmistakable. The amp runs strong and quiet. As mentioned, the parts all seem to be vintage. The input jacks are a little loose as such, and the bass potentiometer has one spot in it where the response bumps a bit. These parts work fine, they just have a little quirkiness to them.

This amp will blow your mind!