Got a new baby to my collection, a 50-watt large box Lead 1987 from '72. I also found a relatively rare Marshall 2x12" cabinet model 2045 from '74(ish). I bought it empty and loaded it with a Celestion G12-65 and a Weber C1265 so now it can handle a total of 130 watts - should be enough even for a JCM800 2203. This mini-stack just screams. Here's a picture of them together with my '60 relic Stratocaster (Cunetto neck and Sheptone pickups): There's a little story about the amp on my web page, which I guote here: A metal panel point-to-point Marshall JMP 50W Lead (model 1987) from 1972. This amp came to me with the most suspicious power tube configuration I've ever seen: a near-dead RCA 6L6G and a very strong Tungsram EL34. Also the bias resistor had drifted from 68k to 89k so the tubes couldn't be biased warm enough. Luckily I found a nice 56k carbon composition resistor as a replacement and now the bias trimmer has a usable range again. A nice pair of Telefunken EL34s really does justice to this baby. The power transformer is an upright one. In 1972 Marshall used both laydown and upright power transformers and even though the laydown power transformers were more common in the early years of Marshall amps, some of the later '72 models have laydown transformers as well. Wonder why they put upright ones on some of the early '72 ones. My guess is that they put in whatever they had in stock at any given time. There are six rare Wima "chicklet" capacitors on the board as opposed to the all-mustard set you'd expect from most amps of the era. Marshall only used these capacitors in '72 and only in a handful of amps. Some say these capacitors sound a bit more aggressive than the "mustard" capacitors. I'm definitely not going to swap them out, to me they sound great! On top of all this: the grid wires are orange as opposed to the usual green, but the solder joints seem untouched, so I think they are original. All those facts combined it's no wonder that even though most old Marshalls sound great, they all sound a bit different! Here's a link to more detailed pictures: https://www.dropbox.com/gallery/4302688/3/Music gear/Amps & Cabs/Marshall JMP 50W 1972?h=674fa3 I'm going to get this thing recapped as it has a slight buzz - nothing dramatic though. I think I'll get the fuse holders replaced as well and install a pair of screen grid resistors just to be sure. Strange that my '71 already has those and this baby doesn't. I'm using Telefunken EL34s that should be able to handle all the voltages this amp has to offer. Did I mention the amp came with three original Mullard BVA ECC83 preamp tubes and the weakest of them tested at 100% - the rest were stronger. Now a couple of questions: 1) I read on the other forum that the white bias voltage wire should be moved from the rectifier lug to the standby switch, because otherwise there's a risk of damaging the PT or the rectifier. Do you agree? On my '71 the wire is already connected to one of the standby switch lugs. 2) Have you seen a lot of Marshalls with orange grid wires instead of green? 3) Anybody else here with a '72 Marshall loaded partially with those yellow chicklet capacitors? If I had to describe this amp with one word, it would be "Van Halen". Not that it would be exactly the legendary brown sound, but I'm very happy to play the early VH stuff with this baby - no need for pedals or anything, there's exactly the right amount of gain and punch. I love it. Feel free to comment!