Supro 1812R Blues King 12

$389.00 Price Tier: Standard

5.0 (2)

2 Critic Reviews

1 Review

Find out who is using Supro 1812R Blues King 12

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1 wishlisted

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Page last updated Jun 19, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated June 19, 2026.

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Price

5.0 (28)

$389.00 2 available Used

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Average Price: $389

Standard/Professional

$300

$701+

Price Tier

In the Combo Guitar Amplifiers category, Supro 1812R Blues King 12 is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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High-end

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Description

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Discover the raw power and soulful tone that defines blues and rock with the Supro 1812R Blues King 12. This combo amplifier embodies a seamless blend of vintage charm and contemporary functionality. With its rich, all-tube sound derived from a 6L6 tube power amp and a 12AX7 preamp, it offers a sonic palette that ranges from clean, articulate tones to gritty, saturated growls. The inclusion of FET-powered Boost and Gain allows for nuanced tonal sculpting, ensuring that your sound stands out whether in a cozy practice room or cutting through the mix on stage. The pièce de résistance? A custom-made analog spring reverb that adds depth and dimension to your playing, making the Supro 1812R Blues King 12 not just an amp, but a key partner in your musical expression.

Key Features:

15 watts of warm, articulate tone from a 6L6 tube power amp
12AX7 preamp for smooth, classic sound
FET-powered Boost and Gain for versatile tonal options
Custom-made analog spring reverb for added depth and ambience

Product specs

Brand	Supro
Model	1812R Blues King 12 15-Watt 1x12" Guitar Combo
Finish	Black
Year	2019 - 2025
Categories	Guitar Combo Amps
Built-In Effects	Built-In Effects
Color Family	Black
Electronics	Tube
Number of Channels	1 Channel
Number of Inputs	1 Input
Output Power (Watts)	15
Power Tube Type	6L6
Reverb	Spring Reverb
Speaker Configuration	1x12"

FAQs

What kind of music genres is the Supro 1812R Blues King 12 suitable for?: The Supro 1812R Blues King 12 is versatile and well-suited for blues, rock, and classic rock styles, thanks to its warm tube-driven sound and dynamic response.
Does the Supro 1812R Blues King 12 have built-in effects?: Yes, the Supro 1812R Blues King 12 features built-in effects, including a spring reverb, which adds depth and ambiance to your sound.
Is the Supro 1812R Blues King 12 loud enough for live performances?: With its 15-watt output and 1x12" speaker, the Supro 1812R Blues King 12 can deliver sufficient volume for small to medium-sized venues, making it a good choice for gigging musicians.
What type of tubes does the Supro 1812R Blues King 12 use?: The Supro 1812R Blues King 12 utilizes a 6L6 power tube, known for its robust and clear tonal qualities, contributing to the amp's rich sound.
How does the Supro 1812R Blues King 12 handle pedals?: The Supro 1812R Blues King 12 is designed to work well with pedals, offering a dynamic and responsive platform that enhances the effects of overdrive, distortion, and modulation pedals.

Videos

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Sweetwater

Supro Blues King 12 Tube Combo Amplifier Demo

Sweetwater

Supro Blues King 12: Review, Tone Tips & More

Jack Fossett

Supro Blues King 12 | Review

Guitar Interactive Magazine

Supro Blues King 12 Amplifier

Mike Hermans

Supro Blues King 12 Demo

Guitarist

Supro Blues King 12 Demo and Review

ZIMM'S GUITARS

Supro Blues King 12 | Playthrough Demo

ChoptonesOfficial

Summer NAMM 2019: Supro Blues King 12 Amplifier

zZounds

Reviews

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PROS

Great for home practice with lovely clean tones
Responsive controls offer precision adjustments
Rich, authentic reverb enhances sound quality
Features both boost and gain for versatility
Compact form factor, easy to accommodate
Takes pedals well, compatible with various effects
Suitable for recording or live play with proper setup
Offers decent clean headroom for nuanced play

CONS

Lacks the clean headroom for louder, clear tones with certain pickups
Factory issue with reverb cables needing adjustment upon arrival
Might not keep up with louder drummers without PA assistance

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Supro 1812R Blues King 12.

Mods and upgrades

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Swapping the stock speaker with a Celestion Vintage 30 significantly enhances mids and low end for a richer sound.
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Replacing tubes with Genalex Gold Lion in the preamp and Sovtek in the power amp improves the amp's tonal clarity and headroom.
Source

Features and functionality

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The Delta King 12 and Blues King 12 share the same PCB, labeled Blues King 12, with minor component differences for the effects loop.
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The Blues King 12's effects loop is preferred for surf and rockabilly styles using reverb and tremolo pedals like the EHX Ocean 11 and Surfy Bear.
Source

Comparisons

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The Supro Blues King 12 is preferred over the Fender Deluxe Reverb for its distinctive mids and character, despite the latter's better low end.
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The Blues King is considered superior by some due to its versatility with an effects loop, especially for users interested in diverse pedal compatibility.
Source

User experience

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Some owners report that the reverb tank causes howling and feedback issues, requiring eventual replacement.
Source
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Delta King 12 users report high-pitched hum with high gain pedals, while lower gain settings perform well, suggesting a focus on cleaner tones for compatibility.
Source

Use cases and applications

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The amp excels in classic rock and blues, providing ample grit without pedals, but struggles with fuzz pedals at lower volumes.
Source
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The Delta King 12 excels with surf and rockabilly tones when paired with specific reverb and tremolo pedals, enhancing genre-specific soundscapes.
Source

Value and pricing

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The Supro Blues King 12 is considered the best value for money in its price range, often compared favorably against more expensive models.
Source

Critic Reviews

Supro 1812R Blues King 12 Review: Making Great Tone Affordable

toneisland.com

Supro's 1812R Blues King 12 amps up the appeal with its lightweight design, rich tones, and versatile features, making it an ideal choice for home practice and small gigs alike. With a user-friendly layout that includes footswitchable gain and a satisfying master volume, this amp delivers impressive sounds across various genres. However, the lack of a detachable power cable may irk some users, though it’s a minor flaw in an otherwise stellar package. Ultimately, the Blues King shines with its affordable price point and exceptional tonal quality, solidifying it as a top contender for guitarists seeking both functionality and flair.

positive

Full Review

Review: Supro 1812R Blues King 12

guitar.com

Supro's 1812R Blues King 12 delivers a delightful blend of vintage charm and modern functionality, boasting rich tones and an engaging design that could rival more established amps like the Blues Junior. With its compact size, versatile controls, and effective onboard spring reverb, this amp excels in both stage and home settings, offering everything from smooth cleans to gritty fuzz. However, the awkward tube access and upside-down control panel may frustrate some users. Overall, while the Blues King has minor quirks, its impressive tonal palette and affordability make it a strong contender in the valve amp market.

positive

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5.0 out of 5

Based on 1 Review and 2 Ratings

5 star

4 star

3 star

2 star

1 star

mrdarkmartini

200

about 5 years ago

Outstanding

Bought on a whim when I learned of a super good black Friday deal. Sounds great in the bedroom but is loud enough for most band applications. Just sounds great!

Roles:

Guitarist Composer

Genres:

Rock Blues Funk / Soul