What kind of marshall is this?

Re: What kind of marshall is this?

How much do these typicaly go for? The ability to bring it down to 25 watts is really pleasing.

Anyone have experience with these?
 
Re: What kind of marshall is this?

It's three channel amp, with one of the better Marshall cleans. The three channels are clean, crunch, and high gain lead. The lead channel is voiced more for smooth violinesque singing solos, and not the heavy, heavy, modern "brutal" distortion. In my opinion, it's much better tonewise than the TSL.

It uses 11 tubes and can be rather demanding from a tube maintence standpoint though. The early ones had EL34's, and if it's got Blue tolex it should be one of the EL34 versions. Some later versions in had 5881's stock.

It gets 25 watts by switching out to two output tubes and then running them in triode, instead of pentode. You can run it at 50 watts, either in pentode or triode, IIRC.
 
Re: What kind of marshall is this?

Triode is three elements in the tube in operation, and pentode is five elements inside the tube in operation. In triode the three elements are the plate, cathode and the control grid. Pentode adds two additional grids to focus the electrons, making the tube output twice as powerful.

On most class A/B tube amps, the output tubes are almost always operated in pentode for max wattage output. Four tubes=100 watts, and two tubes = 50 watts, in most cases.

By operating the tubes in triode, the wattage output is reduced by 1/2, but the tone is also softer and less bright. Kinda suedo class A. Rockers usually prefer the more agressive, tighter, attack, of pentode, and that's probably why triode isn't that popular among rockers.

Triode can be rather nice for blues type playing, or recording, not only because it's a warmer, smoother tone, but because you can more likely get to the point of pushing the output tubes, before being too loud.

Preamp tubes are actually two mini triodes in one mini bottle.
 
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