Marshall Celestion 100 Amplifier

The Marshall Celestion 100 Amplifier is a highly coveted, limited-edition tribute stack (Head: ST20HC, Cabinet: ST112C) designed to celebrate Celestion's 100th anniversary. It is essentially a premium, handcrafted Studio JTM amplifier, offering the iconic vintage JTM tone that defined the sound of rock 'n' roll legends like Jimi Hendrix and Eric Clapton. This stack delivers authentic, all-valve tone in a powerfully compact design. The amp features the ability to switch between 20W and 5W output, making it versatile for both the stage and quieter studio or home use. The cornerstone of its sound is the Celestion 100 Alnico Speaker, which is a special anniversary model inspired by Celestion’s earliest guitar speakers, delivering warm, vocal midrange and classic low-end grunt. This is a collector’s piece, hand-built in the UK.

Model

Celestion 100 Head

Celestion 100 1x12 Cab

Range

Studio (Studio JTM Base)

Studio

Technology

Valve (Tube)

N/A

Output Wattage

20W (Power reduction to 5W)

30W (Speaker Rating)

Preamp Valves

2 x ECC83, 1 x ECC83 (Phase Splitter)

N/A

Power Amp Valves

2 x 5881

N/A

Channels

2 (Normal/Loudness II & High Treble/Loudness I), Patchable

N/A

Controls

Treble, Middle, Bass, Presence, Normal/Loudness II, High Treble/Loudness I

N/A

Effects Loop

Yes, Series Switchable

N/A

Speaker Model

N/A

Celestion 100 Alnico Speaker

Speaker Config

N/A

1 x 12”

Outputs (Head)

5 x ¼" Jacks (16Ω / 8Ω / 4Ω), DI Out

1 x ¼” Jack Input

Weight

9.25 kg / 20.4 lbs

13.2 kg / 29.1 lbs

Dimensions (W x H x D)

500 x 240 x 230 mm

500 x 490 x 265 mm

Key Features and Benefits of Marshall Celestion 100 Amp

This valve amplifier is built for the discerning musician, focusing on authentic tone and versatile power

Feature: Limited Edition Studio JTM Design -> Benefit: Provides the era-defining, highly sought-after tone of the original Marshall JTM45 in a compact and aesthetically unique collector’s package.

Feature: Celestion 100 Alnico Speaker (30W) -> Benefit: Equipped with a special anniversary Alnico speaker that captures the rich, warm, and highly dynamic tones of Celestion’s first purpose-built guitar speakers from the 1960s.

Feature: Versatile Power Reduction (20W to 5W) -> Benefit: Allows you to achieve full valve saturation and rich overdrive tones at a much lower, more manageable volume, making it perfect for both home practice and studio recording.

Feature: Dual Patchable Channels (Loudness I & II) -> Benefit: The two voices can be patched together using a jumper cable, opening up a world of all-valve tonal experimentation and unique sound blending possibilities.

Feature: Series Switchable Effects Loop -> Benefit: Enables the seamless integration of external effects like reverb, delay, or modulation after the amp's natural valve distortion, preserving your core tone.

Feature: Handcrafted in the UK -> Benefit: Built with the same expert craftsmanship and highest quality componentry in the original Marshall UK factory, guaranteeing unmatched reliability and authenticity.

Frequently Asked Questions (FAQs)

Is the Celestion 100 a limited edition amplifier?

Yes, the Marshall Celestion 100 is a highly limited-edition Studio JTM reissue, hand-built in the UK to mark Celestion's 100th anniversary, with only a very small number of units released worldwide.

What kind of tone does the Celestion 100 amplifier produce?

The amp is based on the Marshall JTM circuit and utilizes special Alnico speakers, giving it a warm, vintage, mid-range-rich tone with a legendary blend of crunch and clean, typical of early rock 'n' roll.

Can I use the Marshall Celestion 100 for quiet practice at home?

Yes, the amplifier head includes a power reduction switch that allows you to easily drop the output from 20W down to 5W, making it suitable for home or studio use while maintaining the authentic valve tone.

What are the main valves (tubes) used in the amplifier head?

The Marshall Celestion 100 head uses two ECC83 and one ECC83 (phase splitter) in the preamp, and two 5881 power amp valves.

Does the amplifier have a built-in effects section?

No, the head has no built-in effects, focusing purely on authentic valve tone. However, it does include a series switchable effects loop to easily connect your external pedals like reverb or delay.