Product Overview

The Studio JTM ST20C brings the iconic 60s tone that initially launched Marshall to the present day, in a more compact and manageable format. Known for its warm, bluesy character, the ST20C recreates the legendary JTM45 sound that has graced countless classic recordings. Designed, engineered, and built in the UK, this combo is an essential tool for guitarists who demand world-class vintage tone, whether they are at home, in the studio, or on the big stage.

Product Description

• The Original Marshall Sound: The ST20C delivers the same smooth, organic tones as the original JTM45. It features two bridgeable channels, allowing you to blend the High Treble and Normal voices to find your perfect sonic balance.

• UK-Built Heritage: Every Studio JTM is handcrafted in Marshall’s UK factory, utilizing high-quality components and an all-valve signal path to ensure authentic, touch-responsive dynamics.

• Authentic 5881 Power Section: Unlike other Studio models, the ST20C uses two 5881 power amp valves. This choice is critical for capturing the specific "American-style" warmth and early breakup that defined the very first Marshall amplifiers.

• Premium Creamback Speaker: This combo is equipped with a 12” Celestion G12M-65 Creamback speaker. This driver is renowned for its woody character and ability to handle the amp's 20W output with a lush mid-range and sweet highs.

• Adaptable Powerstem™ Technology: The ST20C adapts to any environment with a built-in power reduction switch. Effortlessly move from 20W down to 5W to enjoy full valve saturation at a volume level that won't disturb the neighbors.

• Contemporary Features: While the tone is vintage, the functionality is modern. It includes a series FX loop and a DI output, making it easier than ever to integrate into a modern recording or performance rig.

Key Features

• Four Inputs: Classic High and Low sensitivity inputs for both channels, allowing for traditional channel "jumping."

• Compact 1x12" Format: Provides a bigger, fuller sound than 10" combos while remaining highly portable.

• DI Output: Professional-grade 1/4" DI Out for silent stage monitoring or direct recording.

• Flexible Connectivity: Five speaker outputs supporting 4Ω, 8Ω, and 16Ω loads for external cabinet expansion.

   

   

Recommended Settings (Hear the ST20C)

• Clean 1 (Strat): Presence 7, Bass 5, Mid 6, Treb 7, High Treble 3, Normal 1

• Crunch 1 (HSS): Presence 7, Bass 2, Mid 6, Treb 7, High Treble 8, Normal 1

• Crunch 2 (Les Paul): Presence 7, Bass 2, Mid 6, Treb 7, High Treble 8, Normal 1

Technical Specifications