Marshall JTM45 2245 30-watt Plexi Tube Head

30-watt 2-channel All-tube Amplifier Head with 3-band EQ
Marshall JTM45 2245 30-watt Plexi Tube Head image 1
Marshall JTM45 2245 30-watt Plexi Tube Head image 1
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Marshall JTM45 2245 30-watt Plexi Tube Head
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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.

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!

Additional Media

1900 Series Tube Head User Manual
Guitar Amp Buying Guide

Tech Specs

Type Tube
Number of Channels 2
Total Power 30W
EQ 4-band with Presence
Preamp Tubes 3 x ECC83
Power Tubes 2 x 5881
Inputs 4 x 1/4"
Outputs 2 x TS
Height 8.07"
Width 25.98"
Depth 10.24"
Weight 32.19 lbs.
Manufacturer Part Number M-2245-01-U

Customer Reviews

Based on 5 reviews
Write your review

Everything it's made out to be and more

To get that amazing Marshall break up tone you have to run it about 7-10. Well going through even a 2x12 this is amazingly loud (doesn't even go to 11!). That being said, this amp is amazing. I was debating on swapping the 5881s for KT88s but I love it as is. I may still try it just for fun but it needs no mods or upgrades. Just unbelievably good tone. I also didn't understand why people would jump the channels, but after fiddling around for a few days it's really a good combo of channel 1 & 2 that you can get. Not quite as bright but not too dark either, just right! Ryan Clapper is my rockin sales guy, don't be afraid to ask for him as he's always on the ball for me and my gear needs. I never understood why people would comment about their sales guy, well once you've got your own, it feels like 1970s levels of service instead of what you typically get today.
Music background: Amateur (at best) Musician

Marshall JTM24 reissue

this is the amp the i was searching for�.. over the years JTM45 is the best!!!!

Nothing compares!

I bought this amp from Sweetwater a couple of years ago, so I've had time to assess its true value. I own several high-quality amps, including a vintage Fender Twin Reverb, a Mesa Boogie, and another Marshall (JCM 900). While all of these amps have their own character and each provides a unique tone that I love, none of them can stand up to the JTM45--my absolute favorite! This amp gives all the tone, all the sound, all the power of classic rock from the 60s (Hendrix) to today (Black Keys). If you like vintage AC/DC, this is your amp! No need for pedals, gadgets, and software--this compact monster will take you everywhere you need to go. Want choice? Switch guitars. Playing a telecaster will get you that solid beefy 70s tone or a good country twang with the volume backed down. Strap on a humbucker-equipped Les Paul and you'll find Skynyrd, AC/DC, and even a little late 80s hair band rock. If you plug a boost, distortion, or fuzz into the chain, watch out! This amp will take you as far into heavy metal and thrash as you can stand. One warning: no master volume, so this baby is LOUD. I actually use the volume control of my RAT pedal to keep the overall volume in check so I don't aggravate the neighbors. I will part with this amp only when they pry it from my cold, dead fingers!
Music background: Hobby guitarist--25 years experience

THE Marshall Amp

My rating had to be a 5 "wow blown away" could it not? The JTM45 is the amp Hendrix used, and Peter Green, and BB KING. Do you want to know what the JTM45 sounds like? Listen to Hendrix at the Monterey Pop Festival, or Peter Green Playing '"The Stumble" live in 1967 with John Mayall and the Bluesbreakers, or to John Til, of Big Brother and the Holding Company backing Janis Joplin at Woodstock.. What could I possibly say about this amp to add anything to that?. I hope Marshall goes right on Making them. If they ever stop then it would be like fender replacing the Twin Reverb with a software program..then we would know even the memory of rock n roll is dead.
Music background: Experienced player and devoted listener

Everything and more!

I have to say this amp sings! Play a strat through it and get that classic strat tone that is round, full, and chewy! Play a tele through it and it barks and bites but always maintains the body you want playing at this volume! I have an Orange AD30 single CHannel head that may be louder and may be fuzzier...but it does not have the charm of this amp. The JTM is the amp man. The only reason I gave it 4 stars and not 5 is due to the fact that a hand built hand wired amp deserves 5 stars when it cost over 1,300. Play anything through a JTM45 pushing greenbacks and if it doesn't make you tingle a bit, you are either not doing it right or you have no soul.
Music background: Getting paid to do what I love
See also: Amp Heads, Marshall, Marshall Guitar Amp Heads