The Vox UL705 Amplifier
A Look "Under the Hood"



United States Line

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© 1996 - 2021 The Vox Showroom, all rights reserved. No use on online auctions, eBay or Reverb.
Designed in May 1966 as the replacement for the Vox AC-4, the Vox UL705 was a single channel, five-watt combo amp with a 10" CT7721 10" Celestion speaker, treble/bass controls and foot switchable tremolo. The four tube UL705 circuit design was similar to the V-2 Vox Pacemaker amp produced by Thomas Organ in America. The following chart lists the UL705 tube functions.

V1 ECC83 (12AX7) V1a - first preamp stage
V1b - gain recovery after tone stack
V2 EL84 (6BQ5) single ended five-watt output stage
V3 EZ80 (6CA4) rectifier
V4

ECC83 (12AX7)

tremolo circuit




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