Get Legendary Plexi Amp Sound With The Marshall SV20H Studio Vintage Guitar Amp Head

The SV20H combines the raw power tones of the 1959SLP and authentic voice of classic rock in a new portable style. The amp that first defined rock 'n' roll in the 60s has been revised for the present day, whilst remaining faithful to the original with its Plexi design and all-valve tone, still considered a classic by scores of legendary guitarists. The SV20H lets you play like your heroes on stage, in the studio and at home.

Classic Sound Captured

Accurately recreating the iconic sound heard on thousands of influential tracks from across the years.

Handcrafted In The UK

Capturing the classic Marshall spirit with an iconic British built valve amp.

Tame The Untameable

Everything you expect from the 1959SLP now available with power reduction technology, letting you shift through the gears from 20W to 5W.

Iconic Styling

A sonic essential lovingly recreated for today's player, the SV20H the truly mirrors the 1959SLP.

SPECIFICATIONS

General

• Model: SV20H
• Range: Studio

Electronics

• Output wattage: 20W (with power reduction option to 5W)
  
• Outputs: 5 x 1/4" jack sockets, selectable 16Ω / 8Ω / 4Ω load
• Inputs: 4 (2 x high, 2 x low) "Lead and Bass"
• Controls: Low/High power mode selection switch, presence, bass, middle, treble, high treble/loudness I, normal/loudness II
• Effects: None
• Effects loop: Yes, series, send/return

Valves

• Preamp valves: 2 x ECC83, 1 x ECC83 (phase splitter)
• Power amp valves: 2 x EL34

Manufacturer: Marshall Amps
Model: SV20H-U
SKU: I579301-N-1-WHXX
EAN: 5030463491157

We are Chuck Levin's Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.