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Marshall JTM45 2245 30-watt Plexi Tube Head

30W, 2-channel Tube Amp Head with 3-band EQ
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Item ID: JTM45
Marshall JTM45 2245 30-watt Plexi Tube Head
Marshall JTM45 2245 30-watt Plexi Tube Head
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JTM45 2245 30-watt Plexi Tube Head and 1960AX 100-watt 4x12" Angled Extension Cabinet

JTM45 2245 30-watt Plexi Tube Head and 1960AV 280-watt 4x12" Angled Extension Cabinet
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Marshall JTM45 2245 30-watt Plexi Tube Head
$2,299.99
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Link to Gator Cableworks Headliner Series Speaker Cable - 3 foot
$29.99
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Link to Marshall 1960AV 280-watt 4 x 12-inch Angled Extension Cabinet
$1,349.99
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Reissue of the Iconic JTM45 "Plexi"

The Marshall JTM45 tube amplifier head is widely considered to be the definitive '60s Marshall. With 30 watts of power channeled from an all-tube signal path, you'll command the legendary guitar tones of '60s rock legends. The JTM45's sonic sweetness comes courtesy of a GZ34 tube rectifier, which imparts the natural sustain and compression the JTM45 is famed for. Simply put: you'll love how it sounds - and feels - to play through the Marshall JTM45 tube amplifier head.

Related Videos: JTM45 2245 30-watt Plexi Tube Head

Marshall JTM45 Tube Amplifier Head at a Glance:
  • Your guitar will sing
  • Vintage reissue
  • Low wattage for a vintage Marshall
Your guitar will sing

If vintage blues and rock tones are what you crave, then you'll love the Marshall JTM45. This isn't a high-gain amp for metal, nor is it a programmable, multi-channel monster. This is the guitar tone that shaped the sound of '60s blues and rock, from sweet and smooth clean tones to overdriven, growling dirt. One channel and basic tone controls are all that's needed for iconic tone. And if you need to push the JTM45 to the limit, just put your favorite gain boost pedal in front of it and listen to your guitar sing.

Vintage reissue

Part of Marshall's Vintage Series, the JTM45 amp head is an exact re-creation of the legendary amp from the '60s. Also known as the 2245, the JTM45 packs three ECC83 preamp tubes and a pair of 5881 power tubes for incredible tonal prowess. You also get the revered GZ34 tube rectifier, which is responsible for the JTM45's smooth, singing quality.

Low wattage for a vintage Marshall

The JTM45 only uses 30 watts of power to create its epic tones. That's pretty low power when you consider Marshall's other models at the time. But 30 watts is perfect for live use in small- to medium-sized venues, and it's ideal for recording. You can get the sound of a fully-pegged tube amp at a much more reasonable volume level, reducing mic bleed in your studio and your onstage volume when gigging out.

Marshall JTM45 Tube Amplifier Head Features:
  • Accurate reissue of the legendary JTM45 amplifier, a '60s rock legend
  • 30 watts of power, perfect for gigging and recording
  • GZ34 tube rectifier adds natural, smooth compression and sustain to your tone
  • Sounds great with gain boost pedal in front of it
  • Straightforward control set is all you need to craft a range of vintage '60s guitar tones
Take control of the iconic tones of rock's revolutionary days with the Marshall JTM45 tube amplifier head!

Resources

From the Manufacturer

1900 Series Tube Head User Manual
Guitar Amp Buying Guide
The History of the Legendary Marshall 100-watt "Plexi" Head
Apr 30, 2022
Marshall Amps' Legendary Legacy of Loud!
Sep 24, 2021
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Pedal Tips for Creating Tight Metal Tones
Oct 1, 2019
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Find the Best Tube Amp for You
Aug 2, 2018
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The Guitarist's Guide to Electric Guitar Amps - Part 4: The Power Amp
May 24, 2018
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The Guitarist's Guide to Electric Guitar Amps - Part 2: Preamp
Apr 18, 2018
 Article thumbnail
Jumpering Marshall Amp Channels
Feb 7, 2013

Warranty Info

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Tech Specs

  • Type: Tube
  • Number of Channels: 2
  • Output Power: 30W
  • Preamp Tubes: 2 x 12AX7 (preamp), 1 x 12AX7 (phase invert)
  • Power Tubes: 2 x 5881 (power), 1 x GZ34 (rectifier)
  • EQ: 3-band EQ, Presence
  • Inputs: 2 x 1/4" (ch 1), 2 x 1/4" (ch 2)
  • Outputs: 2 x 1/4" (4/8/16 ohms)
  • Effects Loop: No
  • Bias Type: Adjustable Fixed
  • Construction Material: Black Tolex
  • Power Source: Standard IEC AC cable
  • Height: 8.07"
  • Width: 25.98"
  • Depth: 10.24"
  • Weight: 32.19 lbs.
  • Manufacturer Part Number: 2245-01-U

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Reviews

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Customer Photos & Videos

My Dreamp Amp!
And it does not dissapoint!
What can I say about this amp that has not been said in the last 60 years? It is the most wonderful clean amp I've ever had, it completely matches and exceeds my expectations.

I've been after this tone for a long time now. I thought I had it with the Bassbreaker 45, but that amp is too gainy and it sounds more like a 1987 than to the 2245. The DSL, despite being an actual Marshall tube amp, was way more modern than this (a negative for my personal taste). My third try was going to be the Studio JTM, but that does not have the GZ34 tube rectifier, which without shooting them out, I wouldn't know if it did the job that I wanted it to do.

But I just bit the bullet and bought my dream amp, much to the chagrin of my wife. The JTM45 is definitely pricier than all those amps I just mentioned, but it is well worth the price!

It may be vain, but I absolutely how it looks in my music room. Just looking at it inspires me to play, and when I do, what a tone! It is perfect for what I wanted. Beautiful cleans that explode into amazing crunch when hit hard with a boost.

With the channels jumped and both volumes at half way, my Tele sings! Amazing clean sounds that are lush and expressive, and the feeling on the hands is perfectly soft. Hit it hard and it will compress and start to snarl giving you a hint of what it can do. Then just go to town with a boost hitting the amp's front end and it is probably the best sound in the world. In a word, dynamic. In two, epically dynamic!

I am also amazed with the sound pressure levels of this thing. Everywhere online it said that it was unusably loud, but I find it to be just right. Don't get me wrong, it is loud, but the way the internet made it sound, I was expecting it to be painful. Instead it is pretty manageable and not far away from any of my other tube amps. I kind of want to try a 1959 circuit now! But I am using it through a Marshall 2x12. I do want to acquire a 4x12 eventually to see if that is what people call unusable volumes.
I also need to add that I am using an attenuator on it at night time, I can play loud, but not THAT loud!

This is my dream amp, and it did not dissapoint, not one bit. I'm still learning it, as my time with it has been short. But I do not see myself ever parting with it, quite the opposite. I might get another and go wet/dry!
by Rob Cabrera from PA on
Music background: Mostly garage rocker these days
Oh my...
If you are holding off on a JTM, don't. The sound is amazing. And it's a little loud :-)
by Andrew Yeager from ROSENDALE, WI on
Low wattage for a vintage Marshall?
Ok. You want that classic plexi sound. Go for it. It's clean and beautiful. But you want to crank it up to 8 or 10 for that Hendrix grit? Just prepare yourself. They rate it at 30 watts but it is crazy loud. I had a 50 watt plexi back in the day and--ok, I've lost some braincells over the years, but I'd swear this JTM45 is louder than my old 50 watt head was. Just so you know.
by Haxnbauer on
Best I've Ever Had! Rich, 3D, Complex
I've been playing for...MANY years, and I've owned many amps. Let's just say that I bought a MusicMan HD130 NEW. :) Marshalls inc, a JCM800 (2205), JVM210, Origin 20w head (and 2 Marshall 2x12s), as well as Orange, Mesa (combo), PRS, Fenders, Egnater (combo), Budda, and Sunn (Model T-RI) along w/ various 1x12s, 2x12, or '80s Marshall 4x12 (G75Ts) - I list those for perspective so it doesn't seem like I'm fawning over "my first tube amp!" or "my first real amp!" (of course you're going to love it). SO - when I say that my JTM45 is the best amp I've ever owned, I'VE OWNED A LOT OF AMPS and I don't say that lightly. My old (and new) Fenders do a different thing altogether, and don't compete with the Marshall.

Particulars: Yes, it is indeed quite loud - especially with a 4x12. My current 4x12 is non-Marshall replica 1960 cab with Hellatone 30w drivers. The cab in itself sounds fantastic and I don't know what the JTM would sound like through the 80s JCM. Like most plexis, the first 25% of the volume sweep makes a huge impact, and for lower-volume use, you need to jumper the channels. What helps me, and is essential, is running it with a Power Station to get the volume to where I can use it in my home studio. Many people don't consider the JTM a plexi. Strictly speaking, it's actually Marshall's first plexi, but in music circles, it's much different than its 50 and 100 watt younger brothers. It's rich, warm, dynamic, complex, and compresses easily, whereas the "plexis" are more of a sledgehammer and are much brighter and better suited to hard rock, AC/DC, Led Zepp, etc., etc. A lot of people 'think' they want a 50/100w plexi, like their heroes, but the JTM is much better suited for the mere mortals among us. The Pedal Show has a great comparo of them and they sum it up well.

Most of us play at home and in small clubs, or with others, but in a small setting. In such cases, this amp is better suited IMO. Let your ears be the judge. For me, it's the sound I've always had in my head - and I'm classic rock all the way.

A friend of mine strummed one chord and just said "that's the best amp I've ever heard!"

It really is a beautiful sounding (and looking) amp.
by Don from Austin, TX on
Music background: Playing for ~40 yrs
Quinton
A great salesman and gives service beyond the norm
by Robert from AZ on

There are countless "British"-style guitar amplifiers out there, but take it from the lifelong guitarists and tone connoisseurs at Sweetwater, when it comes to Marshall tone, there's nothing like the real thing. We've played them all, from vintage JTM45s and the ultra-cool Plexi reissue to modern handmade masterpieces such as the JVM410. There isn't a model among them we can't recommend with total confidence, and that includes their more affordable models too, like MG, DSL, and Code series amps. Thanks to our tight relationship with Marshall, Sweetwater's always on the cutting edge of their latest designs, custom models, and limited-edition gems. If you want iconic tone from across the pond, you want Marshall, and your Sweetwater Sales Engineer will help you find the perfect one.

See also: Amp Heads, Marshall, Marshall Guitar Amp Heads