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Swart AST Atomic Space Tone Master 18-Watt 1x12" Guitar Combo

Swart AST Atomic Space Tone Master 18-Watt 1x12" Guitar Combo

$2,150.00 Price Tier: High-end

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Page last updated Jul 06, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated July 6, 2026.

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Price

$2,150.00 1 available Used

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Average Price: $2,150

High-end/Boutique

$300

$701+

Price Tier

In the Combo Guitar Amplifiers category, Swart AST Atomic Space Tone Master 18-Watt 1x12" Guitar Combo is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

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High-end

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Description

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For guitarists seeking a blend of vintage charm and modern reliability, the Swart AST Atomic Space Tone Master 18-Watt 1x12" Guitar Combo offers a compelling choice. This amplifier is celebrated for its hand-wired craftsmanship, which ensures each unit delivers a distinct tonal character reminiscent of classic tube amps. With 18 watts of power, it's ideal for both practice and small venue gigs, providing a rich, full-bodied sound that truly sings.

The AST is equipped with a 12" Celestion Creamback speaker, known for its ability to handle a wide range of tones, from mellow blues to biting rock. The amplifier's tube-driven reverb and tremolo add a layer of depth and warmth, allowing musicians to explore a variety of sonic landscapes. The Swart AST also features a simple, intuitive control layout, making it easy to dial in your perfect sound quickly.

Built to last, this combo amplifier is housed in a rugged cabinet that can withstand the rigors of frequent use. Whether you're a seasoned professional or an enthusiastic hobbyist, the Swart AST Atomic Space Tone Master offers a unique blend of vintage sound and modern reliability that will satisfy discerning players.

Key Features:

18-watt all-tube combo amplifier
Hand-wired construction for superior sound quality
12" Celestion Creamback speaker
Tube-driven reverb and tremolo
Intuitive control layout for easy adjustments
Durable cabinet design for longevity and reliability

Product specs

Brand	Swart
Model	AST Atomic Space Tone Master 18-Watt 1x12" Guitar Combo
Year	2011 - 2025
Made In	United States
Categories	Guitar Combo Amps
Electronics	Tube
Output Power (Watts)	18
Reverb	Spring Reverb
Speaker Configuration	1x12"

FAQs

What type of tubes does the Swart AST Atomic Space Tone Master use?: The Swart AST Atomic Space Tone Master utilizes a combination of 12AX7, 12DW7, and 6V6 tubes, providing a rich, warm tube-driven sound ideal for classic rock and blues tones.
Is the Swart AST Atomic Space Tone Master suitable for small gigs?: Yes, with its 18-watt output and 1x12" speaker configuration, the Swart AST Atomic Space Tone Master is well-suited for small gigs, offering ample volume and projection for intimate venues.
Does the Swart AST Atomic Space Tone Master have built-in reverb?: Yes, the Swart AST Atomic Space Tone Master features a built-in spring reverb, adding depth and ambiance to your guitar tone.
How does the Swart AST Atomic Space Tone Master handle effects pedals?: The Swart AST Atomic Space Tone Master is known for taking pedals well, maintaining clarity and tone integrity when used with overdrives, delays, and other effects.
What kind of tonal characteristics can I expect from the Swart AST Atomic Space Tone Master?: The Swart AST Atomic Space Tone Master delivers a warm, vintage tone with excellent clean headroom and smooth overdrive, making it versatile for various music styles from blues to rock.

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Swart AST Atomic Space Tone Combo Amplifier

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Swart AST Atomic Space Tone Master 18-Watt 1x12" Guitar Combo.

Features and functionality

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The Swart AST has an internal/external switch for seamlessly toggling between the combo and an external cab.
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The amp includes a Night Light attenuator for managing breakup levels in different environments.
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The amp utilizes an 18-20 watt twin 6V6 class AB circuit with a 12" Mojo BV-25 speaker, offering a distinctive tonal quality and tube rectification.
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Weighing only 29 lbs, the Swart AST is among the lightest amps in its class, enhancing portability for gigging musicians.
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The Pro edition of the Swart AST includes a built-in attenuator, enhancing its versatility for both home and band settings without needing additional gear.
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Swart AST uses 5y3 and GZ34 rectifiers, which are praised for their contribution to the amp's tonal quality within its circuit.
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Comparisons

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Sonically, it sits between a Princeton Reverb and a Deluxe Reverb, with a unique clean tone suitable for jazz.
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Owners compare the Mojo Tone BV25M speaker favorably to Celestion Heritage Greenback, highlighting its compatibility and tonal richness in the Swart AST.
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The tone of the Swart AST is described as retro and cuts through a mix better than the Tone King Imperial, particularly appealing for those seeking vintage sound.
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User experience

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Owners find the reverb akin to a subtle, dark plate verb rather than a traditional spring reverb.
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Enthusiasts appreciate the offset control knobs and retro space-themed branding, which contribute to the amp's unique visual appeal and vintage charm.
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The Swart AST's minimalist controls are appreciated for their simplicity, appealing to players who prefer straightforward operation without a master volume.
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Mods and upgrades

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The amp pairs well with various speakers, with users praising the Gold and G12H30 Anniversary models for their tonal qualities.
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Use cases and applications

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An extension cab enhances sound projection when playing with a rock band, offering a bigger, fuller sound.
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The amp is noted for handling fuzz pedals exceptionally well, likely due to its use of 6V6 tubes and all-tube design, making it ideal for fuzz enthusiasts.
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Build quality

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The Swart AST features a window to view glowing tubes, which enhances its aesthetic appeal and invites admiration from both musicians and audience alike.
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