Marshall Design Store SV20H Studio head and SV112 1x12" cab

Hand selected combination of colours by ourselves.

In true plexi style, the SV20H features four separate guitar inputs, two for each channel. This gives you the ability to choose between the brightness of the high treble channel, the roundness of the normal channel, or blend between the two with a patch cable. Add in the EQ and presence controls and you can take your sound from warm saturated blues to aggressive biting leads. The power reduction feature also makes it versatile enough for studio recording and home practice.

Coupled with the 1x12" cab, it truly is a great little setup.


  • Output wattage: 20W (with power reduction option to 5W)
  • Outputs: 5 x 1/4” jack speaker, selectable 16Ω / 8Ω / 4Ω load
  • Inputs 4: (2x High, 2x Low) "Lead and Bass"
  • Controls: Low/High power mode selection switch, presence, bass, middle, treble, high treble/loudness I, normal/loudness II
  • Effects loop: Yes, series, send/return
  • Preamp Valves: 2x ECC83, 1x ECC83 (phase splitter)
  • Power Amp valves: 2x EL34
  • Width: 19.7"
  • Height: 9.4"
  • Depth: 2.1"


  • Inputs: 1
  • Speaker configuration: 1 x 12"
  • Power handling: 70w
  • Speaker model Celestion: V-Type (16Ω, 70w)
  • Unit impedance: 16Ω
  • Width: 19.7"
  • Height: 18.9"
  • Depth: 9.7"


Shipping Information

Our on-line store is open 24/7 and we ship Monday through Friday, excluding bank holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 2:00 p.m. GMT Orders in high demand will have an estimated production time listed on its product page and will ship once we havevtaken delivery. Please contact us for estimated delivery on out of stock items.

About Us

Musicstreet is a Family run independent guitar specialists.

We are not just a website......

we have a bricks and mortar store with 100's of electric guitars, acoustic guitars, bass guitars, amplifiers, effect pedals and other instruments and accessories. Backed by our 5-point Customer Service Guarantee our constant aim is to offer our customers the best service in our industry.