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Average Price: $3,000
High-end/Boutique
$300
$701+
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Price History
Based on price data from 4 merchants for "Blackstar St. James 100 100-watt Tube Combo Amplifier". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
The Blackstar St. James 100 100-watt Tube Combo Amplifier redefines the landscape of tube amplification with its innovative design and exceptional sound quality. A product of meticulous research and development, this amplifier offers a versatile tonal palette that appeals to both vintage enthusiasts and modern musicians alike. At its heart, the St. James 100 features a unique power section with two 6L6 and two EL34 tubes, allowing you to toggle between 50-watt and 100-watt outputs. This flexibility is complemented by four footswitchable channels—Clean, Crunch, OD1, and OD2—each with dedicated EQ and tone-shaping controls.
Designed with the gigging musician in mind, the St. James 100 is equipped with Blackstar’s cutting-edge CabRig technology for direct recording, capturing the full essence of a mic’d-up cabinet. The onboard power amp "Cut" control further enhances your tonal options, letting you adjust the amp's response from bright and clear to warm and vintage-inspired. With its lightweight construction and two Celestion G12Z-70 Zephyr speakers, this amplifier is not only easy to transport but also delivers a robust, full-range tone.
Whether you're in the studio or on stage, the Blackstar St. James 100 ensures your sound is nothing short of spectacular. Its comprehensive connectivity, including MIDI and USB-C outputs, makes it a versatile choice for any guitarist looking to push the boundaries of their sound.
Key Features:
- 100-watt combo with flexible power options (50W or 100W)
- Power section with 2 6L6s and 2 EL34s tubes
- 4 footswitchable channels: Clean, Crunch, OD1, OD2
- Dedicated EQ, Presence, and Reverb for each channel pair
- Blackstar CabRig technology for direct recording
- Power amp "Cut" control for tonal fine-tuning
- Lightweight design with two Celestion G12Z-70 Zephyr speakers
- MIDI Thru/In and USB-C audio output for versatile connectivity
Product specs
| Type | Tube |
| Number of Channels | 4 |
| Output Power | 100W (EL34/6L6 half power switch, 5%-100% power control) |
| Total Power | 100W (EL34/6L6 half power switch, 5%-100% power control) |
| Speaker Size | 2 x 12" Custom Celestion G12Z-70 "Zephyr" |
| Preamp Tubes | 3 x 12AX7 |
| Power Tubes | 2 x 6L6, 2 x EL34 |
| Reverb | Yes |
| Effects | Overdrive |
| Amp Modeling | 3 x Cab Rig cabinet models |
| EQ | 2 x 3-band EQ, 2 x presence, 3-way cut switch |
| Inputs | 1 x 1/4" |
| Outputs | 3 x 1/4" (8/16 ohms), 1 x XLR (cab rig out), 1 x 1/4" (line out/headphones) |
| Effects Loop | Series/Parallel FX Loop with Level switch |
| MIDI I/O | 2 x 5-pin DIN (In, Thru) |
| USB | 1 x USB-C |
| Footswitch I/O | 1 x 1/4" (2-way), 1 x XLR (6-way) |
| Footswitch Included | Blackstar FS-23 footswitch |
| Computer Connectivity | USB |
| Bias Type | Adjustable Fixed |
| Software | Cab Rig |
| Construction Material | Black Tolex |
| Power Source | Standard IEC AC cable |
| Height | 20.78" |
| Width | 26.81" |
| Depth | 10.19" |
| Weight | 43.03 lbs. |
FAQs
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What are the tonal characteristics of the Blackstar St. James 100 Combo Amplifier?
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The Blackstar St. James 100 offers versatile tones with its 4-channel design, providing everything from clean to high-gain sounds. Its combination of EL34 and 6L6 power tubes delivers rich harmonics and dynamic headroom, suitable for various genres.
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Is the Blackstar St. James 100 suitable for live performances?
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Yes, the Blackstar St. James 100's 100-watt output and dual 12" Celestion speakers make it ideal for live performances, offering powerful projection and clarity. Its power attenuation feature allows for reduced volume without sacrificing tone.
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Does the Blackstar St. James 100 work well with pedals?
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The Blackstar St. James 100 is designed to integrate seamlessly with effects pedals, featuring a series/parallel effects loop with a level switch for optimal signal routing and tone preservation.
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How does the power attenuation feature work on the Blackstar St. James 100?
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The Blackstar St. James 100 includes a power control that can adjust the output from 5% to 100%, allowing for full tube tone at lower volumes, ideal for both practice and performance settings.
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What connectivity options does the Blackstar St. James 100 offer?
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The Blackstar St. James 100 provides multiple connectivity options, including USB-C for recording, MIDI I/O for control, and various outputs for speaker cabinets and direct recording via XLR.
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Can the Blackstar St. James 100 be used for recording?
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Yes, the Blackstar St. James 100 is equipped with a USB-C output and Cab Rig software, offering direct recording capabilities and cabinet emulation for studio-quality sound.
Videos
John Browne
UNREAL | BLACKSTAR ST JAMES 100
Reviews
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Blackstar St. James 100 100-watt Tube Combo Amplifier.
Features and functionality
Build quality
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The amplifier uses a switched-mode power supply (SMPS), which may introduce complexity and has reported reliability issues.
Source
Setup and maintenance
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Some users experienced an "after note noise" developing after a few months of use, which returned even after service.
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User experience
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Owners report multiple SMPS failures, with issues arising even within warranty periods, raising concerns about long-term reliability.
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Some Fender reissues experienced glass rattle from loose power tube socket holders, requiring tech intervention for quality improvements.
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Users noted sound improvements after swapping out the stock neo-Jensen speaker for a neo-Creamback in the Tonemaster Deluxe.
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Comparisons
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A/B testing revealed the Pro Reverb and Tonemaster Twin with Neo Creambacks sounded indistinguishable; the Pro was favored for its tube sound and smaller form factor.
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The Tonemaster Twin has a "mid presence" issue, described as two-dimensional in recordings, but less noticeable when playing live.
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Owners recommend Creambacks for heavy fuzz users, suggesting the Tonemaster Twin Blonde or Pro over the standard Twin with Neo Jensens.
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Critic Reviews
Based on 0 Reviews and 0 Ratings
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