Vintage 1960s Vox AC10 SRT 'AC20 Mystery Amp' 1×12 JMI Valve Amplifier ComboThis is a wonderfully rare 'unheard' of Vox amplifier, better known as the Mystery Amp. The circuitry on this is the same as the AC10 SRT, and it is also known as the AC20. Most of these that are known came in the 3x10 example, but this one is a 1x12 with a 1963 dated Vox T530 alnico speaker. The copper panel dates this to roughly the same year, but it could be from 1964 too. These were made up of many differe...nt parts that Vox had at the time. It truly is a mystery amp! This one has been worked on in the past, with the speaker connected to a jack socket that can plug into the chassis. All of the valves are replacements, but they still sound awesome. Cosmetically in very very good condition, with hardly any marks throughout. Honestly, you'll not find another like this! It's a rare Vox amplifier for sure! You’ll not be disappointed. This has recently been serviced by a UK leading amplifier tech and it plays great!At The Music Locker we will do all we can for you to get the instrument you want. You’re more than welcome to come and have a play on this, coupled with one of our vintage guitars!