Marshall Studio Vintage SV20H 20W Head & SV112 1x12 Cab, (Used, Comm)

The Marshall Studio Vintage SV20H Valve Head and SV112 1x12 Speaker Cabinet combine to create a compact, British-made guitar amplifier rig inspired by the legendary sound of Marshall's original 1959 Super Lead Plexi amplifiers.

Designed to capture the unmistakable character of classic Marshall amplification in a more manageable format, this matching head and cabinet combination delivers rich valve harmonics, responsive British crunch, dynamic cleans and powerful classic rock tones.

At the heart of the rig is the Marshall SV20H, a 20-watt all-valve amplifier head from the acclaimed Studio Vintage Series.

Inspired by the classic Marshall 1959SLP, the SV20H features a traditional valve circuit with three ECC83 valves and two EL34 power valves, reproducing the dynamic response and unmistakable tonal character of vintage British rock amplification.

Its switchable 20W and 5W power modes provide additional flexibility, allowing guitarists to choose between greater headroom and a lower-output setting for rehearsals, recording and more controlled playing environments.

The amplifier features the familiar four-input Plexi-style arrangement, with separate High Treble and Normal voicings. Each provides high- and low-sensitivity inputs, allowing players to select or blend different tonal characteristics using traditional channel-jumping techniques.

Dedicated High Treble and Normal loudness controls work alongside Treble, Middle, Bass and Presence adjustments, providing the familiar hands-on experience of a classic Marshall amplifier.

Unlike the original vintage Plexi heads, the Studio Vintage also includes a switchable series effects loop and a dedicated DI output, making it more practical for contemporary pedalboards and recording setups.

Completing the rig is the matching Marshall SV112 speaker cabinet.

Made in Britain and designed specifically for the Studio Vintage range, the SV112 features a 12-inch Celestion V-Type speaker, rated at 70 watts with a 16Ω impedance.

Its compact, straight-front cabinet provides a focused, punchy response with rich midrange character, helping the SV20H deliver everything from articulate cleans to saturated classic rock overdrive.

Both units feature Marshall's traditional black and gold styling, creating a cohesive amplifier setup that looks as impressive as it sounds.

This Marshall SV20H head and SV112 cabinet combination is presented in Very Good Pre-Owned Condition, showing some cosmetic wear consistent with careful previous ownership.

For guitarists seeking authentic Marshall Plexi character in a compact matching head-and-cabinet setup, this Studio Vintage rig offers a particularly appealing combination of sound, construction and practical versatility.

At A Glance

Detail	Information
Brand	Marshall
Series	Studio Vintage
Amplifier Head	SV20H
Speaker Cabinet	SV112
Amplifier Output	20W / 5W
Amplifier Type	All-Valve
Speaker	1 × 12" Celestion V-Type
Cabinet Impedance	16Ω
Finish	Black & Gold
Manufacture	Made in the UK
Condition	Very Good – Pre-Owned

Pre-Owned Condition Report

Very Good Condition

This Marshall Studio Vintage SV20H and SV112 combination is presented in Very Good Pre-Owned Condition, indicating some cosmetic wear consistent with careful previous ownership.

Both units feature the familiar Marshall black covering, gold details and classic British amplifier styling.

The SV20H amplifier head retains its traditional six-control front panel and four-input arrangement, while the SV112 provides the matching 1x12 speaker enclosure.

Please study the accompanying photographs for an accurate assessment of their individual cosmetic condition, including the amplifier covering, cabinet grille, corners, handles, control knobs and rear connections.

Matching Studio Vintage Head & Cabinet

This listing includes the Marshall SV20H valve amplifier head and the Marshall SV112 1x12 speaker cabinet together.

The two components are designed to complement one another, providing a cohesive and practical compact Marshall amplifier rig.

What's Included

• Marshall Studio Vintage SV20H 20W Valve Amplifier Head

• Marshall Studio Vintage SV112 1x12 Speaker Cabinet

Service & Valve Amplifier Care

The SV20H uses a traditional valve amplifier circuit and should be operated with appropriate ventilation and a correctly connected speaker load. Valve amplifiers benefit from careful handling, suitable warm-up time and periodic assessment of valve performance as part of normal maintenance. Connections, switches, controls and cabinet hardware should be inspected as part of regular equipment care. Always connect the head to the cabinet using a proper speaker cable with the correct impedance arrangement, and never operate the active valve power stage without an appropriate speaker load.

Key Features

• Complete Marshall Studio Vintage Rig: Matching amplifier head and speaker cabinet.

• Marshall SV20H Head: Premium British-made all-valve amplifier.

• Marshall SV112 Cabinet: Matching compact 1x12 speaker enclosure.

• Classic Plexi-Inspired Tone: Based on the legendary 1959 Super Lead sound.

• 20-Watt Output: Powerful valve sound for rehearsals, recording and performance.

• 5-Watt Power Reduction: Additional flexibility for lower-output operation.

• Two EL34 Power Valves: Classic British rock character.

• Three ECC83 Valves: Traditional preamp and phase-inverter design.

• Four Instrument Inputs: High- and low-sensitivity options.

• High Treble & Normal Voicings: Traditional Plexi-style sound shaping.

• Channel-Jumping Capability: Blend the two input voicings using a suitable patch cable.

• Dual Loudness Controls: Shape preamp drive and response.

• Treble, Middle & Bass EQ: Familiar Marshall tonal adjustment.

• Presence Control: Refines upper-frequency power amplifier response.

• Switchable Series Effects Loop: Integrate external delay and modulation pedals.

• DI Output: Additional signal routing for recording and sound reinforcement.

• Celestion V-Type 12-Inch Speaker: Articulate, punchy British speaker character.

• 70W Speaker Power Handling: Suitable capacity for the 20W amplifier head.

• 16Ω Cabinet Impedance: Matches the appropriate SV20H speaker connection.

• Compact Stack Format: Practical alternative to a traditional large Marshall stack.

• Black & Gold Styling: Iconic Marshall appearance.

• Made in Britain: Authentic Marshall manufacturing heritage.

• Very Good Pre-Owned Condition: Attractive matching second-hand rig.

Why You'll Love It

There are few guitar sounds as instantly recognisable as a classic Marshall Plexi amplifier pushed into natural overdrive.

The Studio Vintage SV20H brings that sound into a much more manageable amplifier format, retaining the responsive feel, harmonically rich breakup and aggressive midrange that helped define generations of rock music.

With the matching SV112 cabinet, the result is a complete amplifier system designed to work together.

The EL34 power section gives the SV20H its distinctive British character, while the four-input arrangement allows guitarists to explore the relationship between the brighter High Treble voicing and the fuller Normal voicing.

The 20W/5W power switching adds welcome flexibility, although both settings are capable of substantial volume when the amplifier is driven hard.

The matching Celestion V-Type speaker provides the clarity, midrange presence and controlled low-end response that works so well with classic Marshall gain.

Unlike larger vintage-inspired amplifiers, the SV20H and SV112 are relatively easy to transport and position, making them appealing for rehearsals, studio recording and smaller performance setups.

For players who want the unmistakable sound and appearance of Marshall's golden era without a full-sized 100-watt stack, this combination is an excellent choice.

Detailed Features & Benefits

Inspired by the Legendary Marshall 1959 Super Lead

The SV20H is inspired by Marshall's iconic 1959 Super Lead amplifier, often associated with the classic Plexi sound of the late 1960s. Its traditional control layout and valve-driven response provide the harmonic complexity, dynamic attack and natural overdrive that have made early Marshall amplifiers so desirable. The Studio Vintage delivers this tonal philosophy in a smaller and more practical format.

Authentic EL34 Valve Power Section

The SV20H features two EL34 power valves, a key part of the classic British Marshall sound. These valves contribute to the amplifier's rich upper midrange, expressive compression and harmonically saturated response when driven. The EL34 configuration makes the SV20H particularly attractive to players seeking traditional hard rock, blues-rock and vintage British amplifier tones.

Three ECC83 Valves

The amplifier uses two ECC83 preamp valves and a further ECC83 as its phase splitter. This traditional valve arrangement provides the characteristic dynamic response associated with classic Marshall amplifier circuits, allowing the guitar's volume control and picking strength to play a significant role in shaping the sound.

Switchable 20W & 5W Output

A dedicated power setting allows the SV20H to operate at either 20 watts or 5 watts. The full-power setting provides greater output and headroom, while the lower setting offers a more manageable alternative for studio use, rehearsals and smaller spaces. The 5W mode remains capable of considerable volume, particularly when the amplifier is driven into overdrive.

Four Classic Plexi Inputs

The SV20H features four instrument inputs arranged around High Treble and Normal voicings, each with high- and low-sensitivity options. This traditional configuration provides several different ways to approach the amplifier's sound, from brighter and more cutting tones to fuller, warmer responses.

High Treble Loudness Control

The High Treble loudness control adjusts the level of the amplifier's brighter input voicing. Increasing it introduces additional attack, presence and overdrive, producing the cutting British rock sounds closely associated with vintage Marshall amplifiers. It is particularly effective for crunchy rhythm guitar and expressive leads.

Normal Loudness Control

The Normal loudness control adjusts the amplifier's warmer, fuller voicing. This provides greater low-frequency body and a smoother response than the High Treble input. Guitarists can use it independently or combine it with the brighter voicing for a more balanced sound.

Traditional Channel Jumping

As with classic four-input Marshall amplifiers, the SV20H allows players to link its High Treble and Normal inputs using a suitable short instrument patch cable. This technique blends the two voicings and gives greater control over the balance between brightness, warmth and low-frequency fullness. It is a popular way to explore a wider range of traditional Plexi sounds.

Classic Marshall Three-Band EQ

The Treble, Middle and Bass controls provide the familiar sound-shaping options associated with Marshall amplification. They allow players to move between bright, cutting rhythm tones and thicker, more rounded sounds, while retaining the amp's characteristic midrange presence.

Presence Control

The Presence control adjusts the upper-frequency response of the power amplifier, adding another level of tonal refinement beyond the standard three-band EQ. Increasing Presence can provide additional bite and articulation, while lower settings can create a warmer, smoother overall sound.

Switchable Series Effects Loop

The SV20H includes a switchable series effects loop, an important modern addition to the classic Plexi-style design. This allows external delay, reverb and modulation effects to be connected after the preamp section, providing useful flexibility when combining traditional valve overdrive with contemporary effects pedals.

Dedicated DI Output

A rear-panel DI output provides an additional connection for suitable recording or sound-reinforcement applications. This makes the SV20H more flexible than a traditional vintage Plexi head. The DI output does not remove the need for the correct speaker load while the valve power amplifier is operating.

Matching Marshall SV112 Cabinet

The SV112 is designed specifically for the Marshall Studio Vintage range and provides a matching, compact speaker cabinet for the SV20H. Its traditional black and gold styling creates a cohesive miniature-stack appearance while maintaining the practical benefits of a separate amplifier head and cabinet.

Celestion V-Type 12-Inch Speaker

The SV112 houses a single 12-inch Celestion V-Type speaker. Known for its balanced response, expressive midrange and clear upper-frequency character, the V-Type complements the SV20H's classic British overdrive particularly well. It can deliver articulate clean tones and punchy rock sounds while preserving the amplifier's distinctive harmonic detail.

70-Watt Speaker Power Handling

The SV112's speaker is rated at 70 watts, providing ample power handling for the 20-watt SV20H amplifier. This makes the cabinet a suitable companion for both the head's full-power and reduced-power modes.

16Ω Cabinet Impedance

The SV112 features a 16Ω impedance and a single speaker input. This allows it to connect directly to the appropriate 16Ω speaker output on the SV20H using a proper speaker cable. Correct impedance matching is essential for safe valve amplifier operation.

Made in Britain

Both the SV20H and SV112 are manufactured in the UK, reflecting Marshall's longstanding British amplifier heritage. Their construction, traditional styling and carefully matched specifications make the pairing especially appealing to players seeking an authentic Marshall amplifier experience.

Compact Head & Cabinet Design

The Studio Vintage format provides the visual appeal of a Marshall head-and-cabinet stack without the size and weight of a conventional large amplifier rig. The separate components are easier to transport individually and offer greater flexibility when positioning the amplifier in rehearsal rooms, recording studios and performance venues.

Who Is It For?

Classic Rock Guitarists: Authentic Plexi-inspired crunch and harmonically rich valve overdrive.

Blues-Rock Players: Dynamic, expressive sound controlled by picking and guitar volume.

Vintage Marshall Enthusiasts: Traditional four-input operation in a compact format.

Recording Guitarists: Classic amplifier sound with 20W/5W switching.

Hard Rock Musicians: Aggressive British midrange and sustaining lead tones.

Pedalboard Users: A responsive valve amplifier with a switchable effects loop.

Gigging Guitarists: A matching head-and-cabinet rig with practical portability.

Studio Musicians: A distinctive amplifier for capturing traditional British rock sounds.

Playing Styles & Applications

The Marshall SV20H and SV112 combination is especially well suited to blues, blues-rock, classic rock, hard rock, indie, alternative, punk and vintage-inspired guitar music.

At lower loudness settings, the amplifier produces articulate clean and edge-of-breakup tones.

Increasing the High Treble or Normal loudness controls introduces natural valve compression, rich harmonics and the crunchy overdrive associated with classic Marshall amplifiers.

The amplifier responds particularly well to changes in guitar volume and picking technique.

Its front-end character also makes it appealing for pairing with overdrive, boost, fuzz and wah pedals.

For delay, chorus and other time-based effects, the switchable effects loop offers additional flexibility.

How It Compares

Marshall SV20H & SV112 vs Marshall 1959SLP

The Marshall 1959SLP is a full-sized 100-watt Super Lead amplifier inspired by the original Plexi design.

The Studio Vintage SV20H captures much of the same tonal philosophy in a smaller 20-watt format, with an additional 5-watt operating mode.

The SV20H also provides modern conveniences such as a switchable effects loop and DI output, making it especially appealing for players who want classic sound without the scale of a traditional 100-watt stack.

Marshall Studio Vintage vs Studio Classic JCM800

The Marshall Studio Classic SC20 range is inspired by the JCM800 2203, featuring a master-volume design associated with harder-edged 1980s rock tones.

The Studio Vintage SV20H takes a more traditional non-master-volume approach, based around four inputs and separate High Treble and Normal loudness controls.

Players looking for the classic late-1960s Plexi response may particularly appreciate the Studio Vintage.

Marshall SV20H & SV112 vs SV20C Combo

The Marshall SV20C combines the Studio Vintage amplifier circuit with a built-in speaker in a single enclosure.

The SV20H and SV112 offer a modular alternative, allowing the head and cabinet to be transported separately and providing flexibility to use other suitable speaker cabinets.

The SV112 also features a 12-inch speaker, while the SV20C combo uses a 10-inch speaker.

Marshall SV112 vs Larger Marshall Cabinets

Traditional Marshall 2x12 and 4x12 cabinets provide additional speakers and a larger overall enclosure.

The SV112 offers a lighter, more compact alternative with a single Celestion V-Type speaker.

This makes it particularly appealing for smaller stages, studios and guitarists who prefer a more manageable equipment setup.

Marshall Studio Vintage Heritage

Marshall was founded in 1962, becoming one of the most influential names in the history of electric guitar amplification.

During the 1960s, the company's amplifiers helped establish the powerful, harmonically rich sounds associated with British blues and rock music.

The iconic 1959 Super Lead became one of Marshall's most celebrated designs, helping define the sound of a generation of guitarists.

The four-input Plexi arrangement, EL34 power valves and naturally driven amplifier response became closely associated with the development of classic rock and hard rock.

Marshall's Studio Series was developed to bring some of these legendary amplifier designs into a more compact, lower-powered format.

The Studio Vintage SV20H draws inspiration from the 1959 Super Lead, preserving many of its traditional playing characteristics while incorporating practical modern features.

The matching SV112 cabinet completes the package, offering a compact British-made speaker enclosure specifically developed for the Studio Vintage range.

Together, the SV20H and SV112 provide an appealing link between Marshall's historic amplifier designs and contemporary performance requirements.

Technical Specifications

Marshall SV20H Studio Vintage Amplifier Head

Specification	Details
Product Type	Valve Guitar Amplifier Head
Brand	Marshall
Model	SV20H
Series	Studio Vintage
Circuit Inspiration	Marshall 1959 Super Lead
Amplifier Technology	All-Valve
Output Power	20W / 5W
Channel Design	High Treble & Normal, Linkable
Instrument Inputs	4 × ¼" Jack
Input Sensitivity	High & Low for Each Voicing
Controls	High Treble Loudness, Normal Loudness, Treble, Middle, Bass, Presence
Preamp Valves	2 × ECC83
Phase Inverter	1 × ECC83
Power Valves	2 × EL34
Effects Loop	Switchable Series
DI Output	¼" Jack
Speaker Outputs	5 × ¼" Jack
Supported Speaker Loads	4Ω, 8Ω, 16Ω
Power Supply	Mains
Head Dimensions	500 × 240 × 230mm
Manufacturer Weight	9.25kg
Country of Manufacture	UK
Condition	Very Good – Pre-Owned

Marshall SV112 Studio Vintage Speaker Cabinet

Specification	Details
Product Type	Guitar Speaker Cabinet
Brand	Marshall
Model	SV112
Series	Studio Vintage
Speaker Configuration	1 × 12"
Speaker Model	Celestion V-Type
Speaker Power Handling	70W
Cabinet Impedance	16Ω
Cabinet Input	1 × ¼" Speaker Jack
Cabinet Type	Compact Straight-Front
Cabinet Finish	Black & Gold
Cabinet Dimensions	500 × 480 × 245mm
Manufacturer Weight	12.25kg
Country of Manufacture	UK
Condition	Very Good – Pre-Owned

Power Requirements & Speaker Connections

The Marshall SV20H is a mains-powered valve amplifier head offering 20W and 5W operating modes.

The matching SV112 cabinet is passive, so it does not require its own power supply.

For conventional operation, connect the SV20H's 16Ω speaker output to the SV112's 16Ω input using a suitable speaker cable.

Important: The SV20H must be connected to a suitable speaker load whenever its valve power amplifier is operating. Do not substitute a standard guitar instrument lead for a speaker cable.

The 5W setting reduces amplifier output but does not make the amplifier silent or remove the need for a suitable speaker connection.

Fair Deal Music Expert Verdict

The Marshall Studio Vintage SV20H and SV112 combination is an excellent choice for guitarists seeking authentic Plexi-inspired valve tones in a compact, matching amplifier setup.

The SV20H provides the rich harmonics, dynamic response and classic British overdrive that have made vintage Marshall amplifiers so desirable.

Its four-input configuration gives players several ways to shape their sound, while the 20W/5W power modes offer useful flexibility across different playing environments.

The matching SV112 cabinet is a particularly suitable partner, with its 12-inch Celestion V-Type speaker delivering a focused, punchy response.

The inclusion of a switchable effects loop and DI output further improves the amplifier's practicality for contemporary guitarists.

Both the SV20H head and SV112 cabinet are presented in Very Good Pre-Owned Condition.

Best Suited For: Classic rock, blues-rock, hard rock, vintage Marshall enthusiasts and recording musicians.

Customers Usually Upgrade From: Marshall DSL amplifiers, Marshall Origin models, compact valve combos and conventional pedal-based rock rigs.

Most Commonly Paired With: Gibson Les Pauls, Gibson SGs, Fender Stratocasters, Fender Telecasters, overdrive pedals, boost pedals, fuzz and wah.

Our Tip: For classic Plexi tones, begin with the High Treble input and keep the Presence moderate. Experiment with the Normal input for a fuller sound, or use a suitable patch cable to blend both voicings.

Showroom Advice: The SV20H is a traditional non-master-volume amplifier, so achieving natural valve overdrive generally involves increasing its loudness controls. The 5W setting is useful, but this remains a powerful amplifier capable of substantial volume.

Why Buy Pre-Owned From Fair Deal Music?

Buying a pre-owned Marshall Studio Vintage SV20H and SV112 combination from Fair Deal Music provides an opportunity to own a matching British-made valve amplifier rig at an attractive alternative to purchasing new.

Our experienced team understands the importance of clear condition descriptions, accurate technical specifications and transparent information about included equipment.

Both the amplifier head and speaker cabinet are presented in Very Good Pre-Owned Condition.

Warranty, Returns & Delivery

This is a pre-owned valve amplifier head and speaker cabinet package, with the condition of both components detailed above.

Applicable warranty and returns arrangements are governed by Fair Deal Music's current terms, with available UK delivery and showroom collection options provided at checkout.

The head and cabinet are substantial pieces of equipment, so suitable care should be taken during transport and storage.

Why Buy From Fair Deal Music?

When you buy from Fair Deal Music, you're choosing one of the UK's most established, independent family run music retailers since 1987.

Based in Birmingham, Fair Deal Music specialises in new, used, vintage and collectable guitars, basses, amplifiers, effects pedals, keyboards and professional audio equipment.

Our experienced team of musicians provides knowledgeable advice and personal service, helping customers find equipment suited to their playing styles and requirements.

Customers benefit from competitive pricing, UK delivery options, our Birmingham showroom and part-exchange services.

Part Exchange – Trade In. Trade Up. Save More.

Fair Deal Music buys and part-exchanges a wide range of musical equipment, including Marshall valve amplifiers, speaker cabinets, boutique amplifier heads, electric guitars, basses and effects pedals.

Your existing equipment could help towards the cost of this Marshall SV20H and SV112 combination.

Frequently Asked Questions

What condition is this Marshall SV20H and SV112 package in?

Both the amplifier head and speaker cabinet are presented in Very Good Pre-Owned Condition.

What equipment is included?

A Marshall Studio Vintage SV20H amplifier head and matching Marshall SV112 1x12 speaker cabinet.

How powerful is the SV20H?

It has 20-watt and 5-watt operating modes.

Is the SV20H a valve amplifier?

Yes. It uses an all-valve circuit.

What power valves does it use?

Two EL34 valves.

What preamp valves does it use?

Two ECC83 preamp valves and an ECC83 phase splitter.

Where is the amplifier made?

The SV20H is made in the UK.

Where is the SV112 cabinet made?

The SV112 is also made in the UK.

What classic amplifier inspired the SV20H?

The Marshall 1959 Super Lead.

Does it have two separate channels?

It uses a traditional four-input design with High Treble and Normal voicings, rather than two independently footswitchable modern channels.

What is channel jumping?

It involves using a short instrument patch cable to link the High Treble and Normal inputs, allowing their two loudness controls to be blended.

Does the SV20H have a master volume?

No. It follows the traditional non-master-volume Plexi-style design.

Does it have a gain control?

Its High Treble and Normal loudness controls are used to adjust the drive and response of the two input voicings.

Does it have a 5-watt mode?

Yes.

Is the 5-watt mode suitable for quiet practice?

It provides reduced output, but the amplifier can still be loud, especially when driven into natural overdrive.

Does the SV20H have an effects loop?

Yes. It features a switchable series effects loop.

Does it have a DI output?

Yes. A dedicated ¼-inch DI output is provided.

Does the DI output allow operation without a cabinet?

No. The amplifier still requires an appropriate speaker load whenever its valve power stage is operating.

What speaker does the SV112 contain?

A 12-inch Celestion V-Type speaker.

What is the SV112's power rating?

70 watts.

What is the cabinet's impedance?

16Ω.

Which speaker output should be used with this cabinet?

The SV20H's 16Ω output, when connecting the single SV112 cabinet.

Can I connect another cabinet?

The SV20H supports suitable 4Ω, 8Ω and 16Ω speaker arrangements, but any additional cabinets must be connected using the correct total impedance.

Can the SV112 be used with other amplifier heads?

Yes, provided the amplifier is compatible with a 16Ω speaker cabinet and the cabinet's 70W power-handling rating.

Does the SV112 need mains power?

No. It is a passive speaker cabinet.

Is this a suitable amplifier for blues?

Yes. The SV20H is particularly effective for dynamic blues and blues-rock tones.

Is it good for classic rock?

Yes. Classic rock is one of the Studio Vintage range's principal strengths.

Can it produce high-gain metal tones?

Its natural gain character is vintage-inspired. An external boost, overdrive or distortion pedal can provide additional gain and aggression.

Is it suitable for pedals?

Yes. Its front input and switchable effects loop provide useful options for external effects.

Does it include built-in reverb?

No.

Is a footswitch required?

No. The traditional SV20H design does not require a footswitch for normal operation.

Is the rig suitable for recording?

Yes. Its power-reduction mode, compact cabinet and DI output provide practical recording options.

Can I part-exchange another amplifier towards this setup?

Yes. Fair Deal Music considers selected amplifiers, guitars and other musical equipment for part exchange.