Swart Space Tone Atomic JR 5 Watt Guitar Amplifier (Pre-Owned)

Description

If only words could fully convey sound—they always fall short to some extent. That’s where the Space Tone Atomic Jr comes in: the latest soulful creation from Michael Swart.

Built on the heart of the popular ST-6V6se, the Atomic Jr adds a year-in-the-making triode reverb stage using a dedicated 12DW7 tube feeding a spring tank, delivering surprisingly BIG reverb—especially impressive given its compact size.

Most amps this small that attempt reverb and big tone come up short. Not so with the 14-lb Class A Atomic Jr. It sounds and feels like a monster—a true testament to Swart's craftsmanship.

The circuit stays beautifully simple, including that lush reverb, and features intuitive controls: Volume, Tone, and Swart’s signature “Space” reverb. There’s also a “Hot/Clean” switch: engage it for extended clean headroom and slower break-up, or switch it off for more raw, quicker saturation—it’s like a built-in tone-shaping hot switch.

Specifications

• Power: 5 W Class A
• Output Type: Single-Ended, Zero Negative Feedback
• Signal Path: 100% Tube Circuit
• Rectifier: GZ34 (5AR4) tube (optional 5Y3 for more sag)
• Reverb: Tube-driven via 12DW7 & Spring Tank
• Controls: Volume, Tone, “Space” (Reverb)
• Switch: Hot/Clean gain mode
• Power Tube Options: 6V6 (standard) or 6L6
• Preamp Tubes: JJ 12AX7, JJ 12DW7; JJ 6V6GT power tube; JJ GZ34 rectifier
• Construction: Point-to-point hand-wired, cathode biased
• Components: Carbon composition resistors, Mallory capacitors, cloth wiring
• Grounding: Star grounding; heaters referenced to ground
• Cabinet & Finish: Finger-jointed solid pine with lacquered tweed cover
• Speaker: Weber Signature 8" Smooth Cone (4 ohm)
• Jacks & Pots: Switchcraft ¼″ input/output, CTS potentiometers
• Extras: Vintage jewel lamp, circuit-fuse protection
• Dimensions: 13 ¾″ H × 13″ W × 7 ¼″ D
• Weight: Approximately 14 lbs

Condition - Excellent

An item in excellent condition may have a few minor scratches or dings, but these will be hardly noticeable. The item will work and sound great, and will be very close to its original state.