Marshall Studio Series JTM ST20C 20-Watt 1x12" Tube Combo Guitar Amplifier
SKU: 79402222515

Marshall Studio Series JTM ST20C 20-Watt 1x12" Tube Combo Guitar Amplifier

Sale price$720.00 Regular price$800.00
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Description

Marshall Studio Series JTM ST20C 20-Watt 1x12" Tube Combo Guitar AmplifierThe Marshall Studio Series JTM ST20C 1x12" Tube Combo Amp marks a striking addition to Marshall's celebrated Studio series. This amp reincarnates the very first Marshall amp, the one that came even before the iconic 1959SLP, now presented in a more compact, manageable 20W format. Despite its scaled down structure, there's no sacrifice to the classic Marshall tone, delivering its legendary sound to the discerning musicians of today. When it comes to

The Marshall Studio Series JTM ST20C 1x12" Tube Combo Amp marks a striking addition to Marshall's celebrated Studio series. This amp reincarnates the very first Marshall amp, the one that came even before the iconic 1959SLP, now presented in a more compact, manageable 20W format. Despite its scaled-down structure, there's no sacrifice to the classic Marshall tone, delivering its legendary sound to the discerning musicians of today.

When it comes to the Marshall JTM amp, “portability” is not a commonly associated word, but that issue is non-existent with the Studio Series, and especially so with the JTM Studio 1x12 combo. Weighing in at a mere 39lbs, and carrying a modest 20” footprint, the small stage is no challenge for this Marshall, nor does it lack the classic JTM sound.

The combo is loaded with the popular Celestion G12M-65 Creamback speaker. This 12” driver takes flavoring from Celestion’s legendary G12M “Greenback” speaker, but with a higher power handling rated at 65w. This is the first combo in the Studio Series to feature a Celestion Creamback speaker, and second to the 2525C Jubilee amplifier to house a 12” driver.

As for the amplifier itself, the Studio Series JTM Combo features the same controls layout as the Studio JTM head: Two independent channels - High Treble and Normal - sharing a three band EQ and master Presence control, low and high inputs for each channel, and 20w/5w output power options selectable by way of the amp’s standby switch.

The ST20C combo also features 4-, 8-, and 16-Ohm speaker outputs, effects loop send and return with bypass switch, and a 1/4” DI out perfect for reamping in the studio or running direct to a speaker simulator or cabinet IR.

For a vintage voiced, all-tube combo amplifier that delivers classic Marshall tone and fits in your trunk or back seat, look to the Marshall ST20C JTM Studio series combo.

Shop More Amplifiers:

  • Part of Marshall's Celebrated Studio Series
  • Reincarnation of First Marshall Amp
  • Compact 20W Format
  • Tube-Driven Combo for Classic Sound
  • Scaled-Down Structure, Full-Scale Tone
  • Delivers Legendary Tone to Modern Players
  • User-Friendly Controls
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 79402222515

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Kim B.
Pawtucket, US
★★★★★ 5
Will buy again!
Flavor Name: Americana
My dog loves the chicken chips!! Not greasy or high calorie.
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Reviewed in the United States on October 9, 2025
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Maggie WW
Pawtucket, US
★★★★★ 3
Dogs love’em but too pricey
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Dogs really like them and I love the fresh ingredients but they are way too expensive for the amount of chips in the bag.
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Mom
Alexandria, US
★★★★★ 5
Perfect single ingredient dog treat!
Size: 14 Ounce (Pack of 1), Size: 14 Ounce (Pack of 1)
Superb quality! We are repeat customers and keep coming back for this delicious, single ingredient dog treat. My golden gets excited every time a new pack is opened and I feel comfortable giving him then as they’re the perfect size, always fresh and are great for his teeth too!
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D. Flex
Lowell, US
★★★★★ 5
Sweet potato fries
Size: 14 Ounce (Pack of 1)
They are a healthy snack for the dogs and all natural. The dogs love them. Quality is good and they don’t smell.
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Reviewed in the United States on February 10, 2026
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Amonds Mack
Carnegie, US
★★★★★ 5
Perfect for Frenchies
Size: 14 Ounce (Pack of 1)
I am a Frenchie. He’s allergic to pretty much everything. My dog absolutely love these treats. I will be purchasing more.
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Reviewed in the United States on March 12, 2026

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