Swart Space Tone Reverb (STR) – Custom Black "Tuxedo" AST Finish (SN #286)

The Ultimate Grab-and-Go Boutique Tube Combo

The Swart Space Tone Reverb (STR) is legendary for delivering massive, three-dimensional, room-filling tone from a compact 5-watt package. This specific amplifier (Serial Number #286) is a rare find, housed in the standard compact STR finger-jointed pine cabinet but custom-finished in Swart’s sleek, mid-century modern "Tuxedo" aesthetic—featuring black retro tolex, white piping, and a contrasting grill cloth normally reserved for the Atomic Space Tone (AST) line.

Hand-wired point-to-point in Wilmington, NC, the STR features a single-ended Class A circuit with zero negative feedback. This makes the amp wildly dynamic and highly responsive to your guitar's volume knob and pick attack, effortlessly transitioning from woody cleans to thick, harmonically rich overdrive. Coupled with a lush, zero-insertion-loss tube spring reverb, this amp provides a legendary vintage soundstage.

Premium Upgraded Tube Loadout

This STR is currently running an exceptional, premium tube set optimized for rich harmonics and vintage feel:

• Power Section: Genalex Gold Lion 6V6GT/CV511 for smooth midrange, detailed highs, and a tight bottom end.
• Rectifier: NOS (New Old Stock) Philips ECG JAN 5Y3WG military-spec rectifier. This drops the plate voltage slightly compared to the stock GZ34, providing gorgeous, spongey, vintage "sag" and natural compression.
• Preamp: Equipped with a premium Genalex Gold Lion 12AX7 for a highly articulate, low-noise core tone, paired with an Electro-Harmonix driver.

Key Features & Specifications:

• Circuit: 5-Watt, Single-Ended Class A, 100% Point-to-Point Hand Wired
• Cabinet: Custom Black "Tuxedo" AST styling on the standard STR compact footprint
• Construction: Finger-jointed solid pine cabinet for superior acoustic resonance
• Speaker: 12" Mojotone BV-30H (8 ohm) ceramic speaker
• Reverb: Tube-driven spring reverb (parallel stage with zero insertion loss)
• Biasing: Cathode Auto-Biased (allows for easy swapping between 6V6 and 6L6 power tubes)
• Serial Number: #286 (Early production model)

General Specifications

• Serial Number: 286
• Model: Space Tone Reverb
• Condition: Very Good (Some tolex scratches on the back)
• Finish: Black
• Manufactured Date: 6/2/2010
• Manufactured Location: United States
• Padded Cover Included