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Blackstar St. James 112 100-watt 1 x 12-inch Speaker Cabinet

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Blackstar St. James 112 100-watt 1 x 12-inch Speaker Cabinet

$388.00 to $649.99 Price Tier: Standard

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Page last updated Jul 07, 2026

Pricing and availability

We compare 600+ stores and found this item at 3 stores. Prices updated June 13, 2026.

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Price

$649.99

View Deal

$649.99

View Deal

$388.00

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Average Price: $563

Standard/Professional

$200

$601+

Price Tier

In the Guitar Amplifier Cabinets category, Blackstar St. James 112 100-watt 1 x 12-inch Speaker Cabinet is priced in the upper end of the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Standard

High-end

Price History

Based on price data from 3 merchants for "Blackstar St. James 112 100-watt 1 x 12-inch Speaker Cabinet". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

^* Product prices and availability are updated by Equipboard every 24hrs and are subject to change. Equipboard may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. For more information, please refer to our affiliate disclosure.

Description

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Unleash the power of uncompromised tone with the Blackstar St. James 112 100-watt 1 x 12-inch Speaker Cabinet. Designed for the modern guitarist seeking both portability and performance, this cabinet boasts a uniquely crafted Celestion G12Z Zephyr 12-inch speaker. Inspired by the featherweight efficiency of a Formula 1 race car, it's engineered to deliver the full, rich sound you expect without the back-breaking weight.

Housed in a robust candlewood birch frame, the St. James 112 maintains acoustic fidelity while being incredibly lightweight, making it an ideal companion for gigs or studio sessions. The half-back design not only enhances projection but also reduces weight, allowing for easy transport with its top and side handles. Whether you're plugging in a pedalboard amp or a full-sized head, the 16-ohm input and parallel thru-output ensure seamless integration into your existing setup.

The design also features an illuminated Blackstar logo for added style on stage, ensuring you not only sound great but look the part too. Perfect for those who refuse to compromise on sound while keeping mobility in mind, the Blackstar St. James 112 is a game-changer in the world of guitar amplification.

Key Features:

100-watt power handling with a custom Celestion G12Z Zephyr 12-inch speaker
Lightweight construction with candlewood birch for durability and acoustic excellence
Half-open-back design for weight reduction and enhanced sound projection
16-ohm input with parallel thru-output for versatile connectivity
Top and side handles for easy transportation
Illuminated front logo for a striking stage presence

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Blackstar St. James 112 100-watt 1 x 12-inch Speaker Cabinet.

Mods and upgrades

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Some users swap the Tonemaster Deluxe's stock neo-Jensen speaker for a neo-Creamback to enhance pedal compatibility, especially with heavy fuzz.
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Features and functionality

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The St. James has been noted for its lightweight design, which is appreciated by gigging musicians seeking portability.
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The cabinet's Cabsim feature doesn't authentically model the custom Celestion Zephyr speakers, leading to potential distortion issues at varying points.
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User experience

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One owner found the amp adequate for a handful of gigs but lost confidence due to recurring noise issues.
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Owners report an afternote artefact noise, especially noticeable when playing bass notes, which can return even after repairs.
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Several owners find the Pro Reverb's smaller form factor and use of tubes preferable for superior tone, despite potential rattling issues.
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Several owners have experienced power supply failures shortly after purchase, raising questions about long-term reliability.
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Comparisons

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Users opted for the Marshall DSL40CR over the St. James due to fewer potential issues and a lower price point.
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Owners note the Tonemaster Twin's attenuator feature allows for versatile volume control, making it suitable for both home and stage use.
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The Tonemaster Deluxe is favored for its lightweight design and sound quality, but concerns remain over its lack of user-serviceable parts.
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The Pro Reverb 68 is often seen as the best-built of the three, though its PCB design may require expensive repairs if the board fails.
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Some users consider alternative models like the Studio 10 EL34, citing reliability issues with the St. James.
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Use cases and applications

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Some players feel the St. James doesn't cut through a mix effectively, even though it sounds great when played solo.
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When using heavy fuzz pedals, owners recommend opting for models with Creamback speakers, such as the Tonemaster Twin Blonde or Pro Reverb.
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Build quality

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Reports indicate the Pro Reverb may suffer from loose power tube socket holders, causing glass rattle at low volumes.
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Users report failures with the SMPS (switched-mode power supply), indicating potential reliability concerns despite its lightweight, modern design.
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