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Swart Atomic Space Tone Tweed/Black 1x12 Combo Amp  From Swart Amps

Powered by twin 6V6's, The Atomic Space Tone is perfect for nailing those spacious and lush sounds!

Swart Amplifiers


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What We Think

The Atomic Space Tone is lush, warm and sweet - everything you want in a small tube combo! The onboard tremolo and reverb built into this baby are to die for - everything from subtle "sitting in the back" to full on wet drenched ambience can be dialed in with the controls working together so well. Give depth to your volume swells, add a little more dynamics to that arpeggiated run, or just throw a little color on your riff to see what kind of tonal territory you dive into. Completely hand wired, point to point to assure the highest quality final product. The Mojotone BV-25m compliments the circuit wonderfully, giving it that open and airy warmth to the midrange and a hint of vintage British tone! The AST is in a realm of its own, with a tone so warm and sweet you can taste it.

Manufacturer's Description from Swart Amps



Michael Swart comments on his latest amplifier:

The idea of the Atomic Space Tone hit me when I was working on a vintage Gibson Scout guitar amp. It had Reverb, Tremolo, and 15 watts of pure rocking vintage tone power but only three preamp tubes and two EL-84 output tubes. I thought to my self - I have never seen an amp that could do so much with so little and sound surprisingly good. But I knew it could be even better. I knew something could be built revolving around my favorite little tone generator, the 6V6. I sent a note of thanks to my cohort for the inspiration for one of the best amplifiers I have ever built and the only thing I have found to equal the soul and amazing tone of the ST-6V6se but with MORE power. 

I call it the ATOMIC SPACE TONE. And damn if it's not a winner - this beast sounds amazing. 

This amp brings more tube soul than I thought possible, even compared to some of my favorite vintage amps. We are talking ALL TUBE circuitry, even the Tremolo and Reverb, all leading into the excellent 12" Mojotone BV-25m speaker.

I am actually so excited by this amp both aurally and visually. It's the second in our Tweed Series which takes our excellent finger jointed pine cabinet and covers it with top quality tweed, adding a lacquer to give it durability and that vintage, timeless look. We then add a rich, dark lacuer tweed on the sides which gives this amp a totally distinctive appearance. When we play out with this beast, everyone that "knows" comes up to inquire about the AST, this on the sound AND looks. Just like the original ST-6V6se, there is nothing out there like it.

Swart Amplifiers


  • The AC is cleaned and rectified by the reliable JJ 5AR4, this a very robust tube providing excellent sonics due to the total lack of solid-state circuits in the rectification stage (SS rectification leads to a more hard/harsh tone and slams the tubes on power-up causing excess tube wear).  A heavy duty, JJ 500V Surface mount capacitor is the mains filtering device.
  • Powered by Twin EH 6v6's putting out 18-22 cathode biased Watts; the twin 6V6s seem to really put out an amazing mixture of soul~tone.  We love this combo!  (You can also sub 6L6s for a bit more headroom due to the extra beefy Heyboer Power Transformer,
  • A 12AX7 does duty as the driver and bias regulated Tremolo.  Ever heard tube tremolo? You will now.  Simply put, if you're a tremolo fan, you won't go back. 
  • Reverb is all tube.  Tube Reverb is the only way to go and our implementation leaves the competition sounding two-dimensional. 
  • The first preamp tube is another dedicated rocking 12AX7 to drive this beast to Mount St. Helens and back.   Our whole driver/preamp circuit has been optimized from months of testing.   The AST sings like no other.
  • Custom built, Heavy Duty, power and output transformers - HeyBoer USA - The New Leader
  • Carbon Comp Resistors for the BEST tone. Period.
  • Mallory, Sprague and JJ Caps - only the best, all considered for their appropriate roles
  • Finest silver tinned cloth & Teflon covered wire
  • Hand Wired, point to point 
  • Standby Switch - amp warmed up|extends tube life 
    High and low inputs for high and low output pickups 
  • Dedicated foot switch as well - Switch pedal included
  • 12" Mojotone British Vintage Series BV-25m
  • And a hand-made, finger jointed pine cabinet covered in light with dark tweed tweed side panels.  This cabinet is part of the magic of the Atomic Space Tone - We tested many different cabinet configurations and wood choices until we found the magic of the AST combo. 
  • Dimensions: 18" T x 15 1/2 W x 9 1/2 D ~ 29lbs

Related Videos

Michael Tuttle Custom Classic S 3-Tone SB Nitro Guitar #228

Watch Eddie Berman show off this beautiful 3-tone Custom Classic Electric Guitar!  This guitar is built for ease of play, and Michael Tuttle has done an amazing job in that category.  This guitar is built out of woods that are extremely light and resonant which gives the guitar a very lively sound!   Gear List Michael Tuttle Custom Classic S 3-Tone SB Nitro Guitar #228 Swart AST Pro Gold Combo Amp Shure SM57 Instrument Mic AEA R84 Ribbon Mic Maag Audio PreQ4-500 Mic Preamp Lynx Aurora 16 Converter   Pedal:   Strymon El Capistan - dTape Echo Pedal   If you have any questions or would like to try this model out for yourself, don't hesitate to call us at 919.682.5552.