This Marshall ST112 Lead 1x12 extension cabinet is in excellent condition, with just added casters as the only change.  The wheels can be pulled from the installed sockets.

We also have a matching 20 watt head in stock.

Built in 2023 per the serial number, it handles 65 watts at 16 ohms and is loaded with a Celestion G12M-65 Creamback — a speaker well regarded for its warm, compressed mid-range character and smooth high-end rolloff. The Creamback's lower-powered heritage in a 12" format produces a rounder, more organic breakup than a standard 75-watt Greenback alternative, making this cab a natural match for lower-to-mid-wattage heads where speaker response and feel matter. The square, partially-open back cabinet construction focuses some of the low-end response and tightens the overall projection, which suits single-channel and two-channel British-voiced heads well.

The ST112 is Marshall's compact straight-front 1x12 extension cabinet, designed as a standalone or stackable unit for use with Marshall heads or any compatible 16-ohm-capable amplifier. The cabinet is constructed from finger-jointed plywood covered in original black vinyl with the original wheat grille cloth intact.  Casters have been added through the bottom of the cabinet, which adds practical mobility without affecting the cabinet's structure or sonic function; see the photos for how this was executed. No other changes have been made to the cabinet or baffle.

The cabinet is in excellent condition overall, the grille is excellent and the Celestion G12M-65 Creamback speaker is original. The vinyl covering is original and the cabinet itself is in very good shape. 

Mahar's Vintage Guitars is a brick-and-mortar and web-based retailer. We are happy to talk with you before you make a purchase.   Please reach out if you feel so inclined! We cross market our items here and on our own site, so items are subject to sale elsewhere at any time (however we will never cancel a sale if it happens here first). See our profile here, our Google reviews as well as our 100% positive Reverb feedback. Also, Reverb limits us to only 25 pictures of our items. There is a good chance we have more. Contact us if you’d like to see them.

No sales tax for direct sale customers outside California. Reverb sales are always taxed.

SPECIFICATIONS

• Date: 2023
• Where Is Date Noted?: serial #
• Weight: 28.2 lbs
• Dimensions: H 19.3" x W 19.7" x D 10.4"
• Watts: 65 Watts handling power @ 16 ohms
• Case/Cover?: none
• Covering Material: vinyl
• Covering Color: black
• Covering Original?: yes
• Cabinet Material: Finger-jointed plywood
• Cabinet Condition: very good
• Cabinet Repairs/Changes: casters added through bottom, see pics.
• Cabinet Original?: yes
• Grille Style: wheat
• Grille Condition: excellent
• Grille Original?: yes
• Baffle Material: Finger-jointed plywood
• Baffle Condition: excellent
• Baffle Original?: yes
• Baffle Repairs/Changes: none
• Handle Material: rubber
• Handle Original?: yes
• Speaker 1 Brand: Celestion G12M-65 Creamback
• Speaker 1 Size: 12"
• Speaker 1 Cone Original?: yes
• Speaker 1 Condition: excellent
• Accessories Included: none
• Documentation: none
• Speaker 1 Original?: yes

We buy, sell, and take trades.

Be sure to check out the other cool guitar related stuff on our site!
Vintage & Used Amplifiers — Fender Electric Guitars — Gibson Electric Guitars — Vintage & Used Effects Pedals

Shipping Policy
By completing your purchase you are agreeing to this shipping policy. Shipments require signature on delivery, no exceptions. Less than 1% of our shipments are damaged in transit, and we are committed to making sure your item arrives safely. If there is damage, retain all packing materials intact, photograph them immediately, and send the photos to .

Amplifiers: We take additional precautions to prevent common shipping damage. Depending on the amp, this may include removing tubes, pulling the chassis from the cabinet if heavy transformers present a drop risk, or removing heavy speakers that could crack baffles in transit. Reassembly is required on delivery — we label everything clearly. These measures add to shipping costs but reflect hard-won experience. Vintage amplifiers (20 years or older) are sold as-is — all amps are tested in our shop upon intake and again before shipping. We cover shipping damage but cannot be responsible for the failure of vintage components in instruments that are 20 to 50-plus years old.