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Few amplifiers can claim to have shaped popular music the way the Vox AC30 did. Built by Jennings Musical Industries in Dartford, Kent, the AC30 was the sound of the British Invasion, powering The Beatles, The Shadows, and countless others through the beat boom and beyond. The non-Top Boost circuit is the purist's AC30: three channels of unadulterated EL84 chime, with the Brilliant channel delivering the glassy, harmonically rich jangle that made the amp famous, and all of it collapsing into that glorious, compressed Class A grind as the volume climbs. Genuine JMI-era examples are the most coveted of all AC30s, and they have only become harder to find in original condition.

This example carries serial number 18619 on its rear plate, which places it in JMI's 18000s production series of late 1964 into 1965. Pleasingly, it sits directly between two surviving amps documented in the JMI serial registry (18549 and 18661), and its features are textbook for the series: grey/black control panel, dome voltage selector, and black basketweave vinyl, with the earlier brown diamond grille cloth marking it as an amp built right at the grille transition. The control panel carries the "A JMI Product" legend, with three channels (Vib-Trem, Normal, and Brilliant) across six inputs, Speed and Switch controls for the vibrato/tremolo circuit, individual channel volumes, and the Tone control. Best of all, the amp retains its original pair of Celestion silver alnico speakers, both wearing their gold-and-blue "Vox - Designed for JMI Sound Equipment, Dartford Road, Dartford, Kent" labels. These drivers are the heart of the AC30's shimmering voice, and finding a JMI AC30 with its original speakers intact is increasingly rare. All three carrying handles are present, and the original cast-metal Vox footswitch for the Vib-Trem circuit is included, itself an increasingly scarce accessory. Usefully for Australian players, the rear-panel mains selector covers 115 through 245 volts, so the amp runs on local 240V mains without a step-down transformer.

Cosmetically, the amp wears its sixty years honestly. The black Tolex shows scuffing, scratches, and rubbing throughout, with wear concentrated at the corners and edges, and the rear serial plate is worn though still legible. The grille cloth is in very good order, the gold trim remains bright, and the cabinet is structurally sound and solid. This is a gigged, played, real-world JMI AC30 rather than a museum piece, and it looks all the better for it.

Specifications:

Model: Vox AC-30 Twin, Non-Top Boost

Serial Number: 18619

Year: 1964-65

Covering: Black Tolex

Grille: Brown Diamond Grille Cloth, Gold Piping

Output: 30 Watts, Class A

Speakers: 2 x 12" Original Celestion Silver Alnico

Channels: Vib-Trem, Normal, and Brilliant, Six Inputs

Controls: Speed, Vib-Trem Switch, Volume (Vib-Trem), Volume (Normal), Volume (Brilliant), Tone, Mains On/Off

Effects: Onboard Vibrato/Tremolo

Voltage: Selectable 115/160/205/225/245V 

Included: Original Vox Cast-Metal Footswitch

Crafted in: Jennings Musical Industries, Dartford, Kent, England