This free pack contains 3 Kemper profiles of the ultra rare Vox UL730 guitar amplifier from 1966.
About the amplifier
The Vox UL730 is a very rare amp with a unique sound that is not easily replicated by other means. It was produced for one year only – 1966.
Most sources claim only around thirty UL730s are left in existence today. Only a few of these are still mated to the cabinet and speakers they were originally sold with. These profiles were made using the original UL cabinet with 12” T1088 (Silver Alnico) speakers.
Despite its rarity, the UL730 has a unique place in rock history. Its distinct sound can be heard on Led Zeppelin II, many albums by Joy Division/New Order and, most famously, on Revolver and Sgt. Pepper’s Lonely Heart’s Club Band by the Beatles.
The UL730 is a hybrid amplifier. The preamp section is a hand-wired transistor circuit. The power amp section uses a quad of EL84 valves, and a single ECC83 valve for phase inversion. It shares some characteristics with the AC30, but the UL730 is still a very different sounding amp.
Due to the hybrid topology, the unusual EQ structure and the unique ”Ultra Linear” power amp circuitry, the sound of the UL730 is distinct enough to set it apart from most other guitar amplifiers.
The UL730 is a non-master volume amplifier with two separate channels - Normal and Vibrato. Each channel has a switchable Top Boost circuit. In addition, the Vibrato channel has a footswitchable Distortion circuit that changes the fundamental sound of the amplifier in a fairly big way.
In summary, the UL730 is a bit like an AC30 that went to the gym for a year, and then grew a really hairy pair…
