For sale: Chicago Blues Box Kingston 30 combo amplifier, in excellent condition, with original protective cover. One of the rarest boutique amps you’ll find anywhere — hand-built by Dan Butler at Butler Custom Sound in Lombard, Illinois, long discontinued. The Kingston 30 is a 1x12 all-tube, hand-wired class A/B combo with tube-driven spring reverb. Every unit required over 60 hours of hand construction and 60 hours of testing. Played by Buddy Guy, Rich Robinson (Black Crowes), and Henry Garza (Los Lonely Boys). Specs: • 30 watts, class A/B • 1x12” speaker (ceramic) • Tube-driven long-tank spring reverb • 3x 12AX7 preamp, 1x 5AR4 rectifier, 2x 6L6 power tubes • Accepts 6V6, 5881, EL34 with rebias — dual bias pots, no matched pair required • Slave out + external speaker jack • Controls: Volume, Treble, Bass, Reverb, Harmonic Boost, Bright • Hand-wired on Forbon eyelet board, silver-plated wire, custom 1W resistors • Stainless steel chassis, finger-jointed pine cabinet Includes: original Chicago Blues Box protective cover. Condition: Excellent. Cosmetically very clean, all electronics fully functional, reverb perfect. Shipping from Italy. Tubes removed and packed separately. Open to reasonable offers.