Marshall JTM 45 BLOCK END with factory EL34's

[@lowqualityguitarvideos]

One of the best sounding marshalls Ive heard

[@blusinbarnesify]

It's got that growl that I look for in a amp. Hard to find. But I know it as soon as I hear it. What a beautiful thing. Don't change a thing. Stay with everything you can. Even tube brands.

[@willdenham]

From what I have been reading the Young brothers liked the tail end JTM50's in particular for their SS rectifiers. I saw photos of some of their backline, post B in B and they had a couple JTM reissues that their tech pulled the rect tubes out of. What a fat sounding 45 this is though. Can really sink your teeth into that tone and sustain.

[@martynh00]

I have what I believe is a '66 JTM45. I bought it in the late '70s. It had EL34's in when I got it so I've used those ever since. I think the OT is a Drake 74-103 rated at 8k. Most of the caps date to '66. The original GZ34 dated to August 1965, but had to be replaced due to arcing. At one point I noticed yellow wax oozing from the power transformer, only to discover that, due to incorrect bias adjustment, one of the valves was drawing 110 milliamps! Once sorted, it now runs at a more conservative 39 mA.

[@johnmarshall3903]

Great amp, congratulations!

[@Matt-rk3de]

That’s a good one right there. Plus some NICE riffing to complement

[@lestera34]

Holy shit this sounds good.

[@ferrucciodesanctis1222]

very very closer to the jtm50 from same era. Best tone ever.

[@chadhudson2046]

The cone cry is sick!

[@nenecarrizo83]

sounds beautiful!!!!!!!

[@mikepetrich9959]

sounds great George.

[@sohar146]

so lovely!!

[@68lp]

Hey George. This amp sounds amazing! Nice work. Was this a 1987 circuit?

[@D3str0yEviI]

Finally just noticed George ain't playing a Gibson ;) lol

[@Panzersonor1967]

Nice playing, man.

[@stipeur]

Wow amazing

[@atbear]

Sounds great, George. I was going to ask if it were a pre-Black Flag amp before I read your description... Is the filtering lower than a tube-rectified / EL34 Black Flag? Mix resistors 270K instead of the BF's 470K? Very cool!

[@PeteKaltsa]

And I sold a 1969 plexiglass panel 100 watt super lead for $2000 in mid 2005….

[@viktorn5195]

greetings from Siberia George! I own a jtm45 metroamp with kt66 tubes, can I replace them with el34 only by adjusting the bias? thanks for the answer.

[@CIPHER7968]

What do you find are the best settings for an amp like this George?

[@kuitaristi3003]

It would have been even more awesome sounding with strat :) I have JTM45 clone with EL34 tubes and yes, it's amazing! I can use KT66 too but i don't keep those that awesome sounding with JTM45 than some others, cleans are good but od a little odd and mushy. EL34 and 5881's are best power tubes to JTM45 my opinion.

[@historiclp4577]

Im thinking of buying a JTM-45 Clone built by Trevor Labovitz.It runs Genelax KT-66 Gold lion power tubes.I am coming from Fender Amps, and am looking fir my first Marshall, and i want that Marhsall sound.Is the JTM-45 too “American” sounding , and i should go for a JCM-800? Or another EL-34 Marshall head? Also, i was told i could run EL-34 tubes in this JTM-45 with a Bias adjustment.If i do that will it give me that Marshall sound?

[@kuitaristi3003]

@@historiclp4577 Maybe someone else can answer better way, but i recommend JMP50 like 1987 model for you because it's like middle of JTM and JCM what comes to sound. I always link Marshall sound to JMP era amps myself because i think that is the best Marshall sound. JTM45 is good but it's still part of Fender 59 Bassman tho sounding still different. You have to usually play JTM loud to get that sound we usually hear from it, or have VVR or similar solution to get more of it. Another good Marshall is 2061x model which is 20w (really more like 15w) little amp but has big sound and still very Marshall sound even it has EL84 power tubes. I have now 2061x clone with master volume AND VVR and i like it more than JTM or bigger JMP. Sound wise 2061x is more like JMP but can also sometimes do JTM type tones too.

[@historiclp4577]

@@kuitaristi3003 i ended up buying a 1988, Marshall JCM-800 2205

[@kuitaristi3003]

@@historiclp4577 That was fast :) I hope you are happy with that.

[@historiclp4577]

@@kuitaristi3003 ...False Alarm...i cancelled that order and am going after a reguler JCM-800 2203 Reissue instead.These seem to be better than the 2 channel 2205 in the marshall world, Or maby that JTM45 clone...im also thinking of building a Mojotone Handwired 50watt british clone, basically a JCM800 point to point wired

[@superchampable]

SO this is a JTM 50 with a JTM 45 faceplate/white back plate?

[@OnTheFritz602]

Where in the hell did you find this gem? The tone is outrageous!

[@metroampcom]

Sent in for restoration work.

[@OnTheFritz602]

Wow!

[@sonnyseabury4051]

George, How much longer is it going to be before you release that 50 watt amp? I talked to one of your people, months ago, and she told me that is was going to be out, this past April. Are you still working on getting them out soon? Thanks.

[@metroampcom]

Sorry for the delays. I've been working for other companies and have little time left for my own designs. That said, it's getting close. I have parts in hand and a prototype will make sound soon. I'm sharing updates with our group on the Metropoulos Players Lounge on Facebook first, before going public. Please join.

[@sonnyseabury4051]

@@metroampcom Will do. Thanks George. I just joined. Waiting for them to accept me.

[@willdenham]

Was it tube rectified?

[@Telecoaster]

Great amp, great riffing! How did you set the amp? Volume on 8? Bass off? Middle, Treble and Presence cranked?

[@rolandoo002]

which speakers are in this cabinet G12H or G12M? Thx ;)

[@willdenham]

What is a 'block end' model. I'm unfamiliar. I wish you would have played more of 'Rock Candy' BTW. Was this the final stage before the black flag 50wt? Sounds awesome. I can't seem to decide between JTM or SLP. I like the loose gain of the JTM but a lot of players claim they get flubby and therefore can't articulate a lot of hard rock staples.

[@sohar146]

what speakers did you use ?

[@michel333100]

Hi George, I'm just curious, but what is the b+ voltage of one of these amps ? Is it around 470 or 490 volts on the plates? Sounds really good. Thanks Michael Newell from Niagara Falls, Ontario, Canada

[@metroampcom]

These are tube rectified and come in around 420V.

[@verticaldude]

have you ever converted a GPM45 kt66 head to those specs with 34's

[@PeteKaltsa]

I have a 2016 RI with 5881’s You think it would sound more crunchy with EL34’s instead? I’m tempted to try them out now. I prefer the sound of the duperlead, I mean superleaf, I mean sweet daddy Hesus! Help me Jesus!

[@JodysTransmissions]

Boing!

[@zen7ile]

S.n 1000-1999?

[@DelReiRock]

F#ck.... It's a holly grail tone machine.....

[@willdenham]

'Ride My Pony'.

[@despot62]

What speakers are in the cab? 33k or 56k? NFB 27K? and what power tubes are in and how do you set them (Ma).. Great sound for sure!

[@despot62]

TNX for your answer!

[@OnTheFritz602]

That is definitely *the sound*. What OT does this beauty have?

[@JasonChannell]

OnTheFritz602 Mercury Magnetics I'd bet.

[@OnTheFritz602]

Doubt that, guessing an original 128 Drake that was used during this transition for the EL-34's or a 139. The Merc's sound sterile and lack that organic element. Maybe good for heavy metal, but not for classic Marshall tones.

[@metroampcom]

Drake 784-128. El34 specs with 8, 16 and 100V outputs.