• Account
  • View Shopping Cart

Menu Search View Shopping Cart Call Us

Swart AST Tweed 1x12 Combo Guitar Amp - Used  From Swart Amps

A pre-loved tweed tone titan from Swart!

Close

Our product photos are the actual, specific serial number for sale!

This specific item was photographed by us here in Durham, North Carolina. We are a very small team dedicated to providing you the most accurate photos possible, through our obsessive focus - individually photographing nearly everything that comes through the door. Questions about what you see? Want more information, photos, or just a friendly conversation with someone that cares and who has actually had their hands on this exact item? Contact us now!
Close

Buy Pre-owned from Sound Pure with Absolute Confidence

Sound Pure's dedication to pre-owned products is unprecedented in the industry. We are a small team of dedicated experts that buys, trades, and consigns. We are trusted by customers all over the world. Our curated collection, is thoroughly tested and inspected by some of the best in the business. Our inventory is constantly changing, ever-evolving, with some items sold before reaching the website. Looking for something specific? Have questions about this product's condition or history? Want more photos, or to simply chat with an expert who's had his hands on this actual piece? Contact us now.
Our Current Used/Vintage Collection »

Sound Pure's Consignment Program »

Luthier Certification for Used Instruments »

Swart Amplifiers

"Gone, Baby, Gone"

This one is sold. Don't miss the next one. Some things never even make it to the site so stay up to date on our used collection.

We get in many oddities, rare and vintage products, most of which go fast. If you're on the hunt for something specific, something unique, or something priced right, let us notify you on our used collection before the items even hit the site.

Want to know if one lands?

Notify Me

Want to discuss what's coming?

What We Think

Condition: Used, Great - Some minor nameplate scratching

*Includes slip cover and footswitch*

Manufacturer's Description from Swart Amps

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 myself - 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.

Swart Amplifiers

Specifications

Serial Number: 767

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 2-button footswitch for reverb & tremolo

12" Mojotone British Vintage Series BV-25m

And a hand-made, finger jointed pine cabinet covered in light with dark 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