Vox AC50 Head 1974, hand-wired Dallas-built example

Please note that items advertised on Reverb may be offered on other platforms and with different prices reflecting the different fees charged. This amp is also available from the VintageAmporium's commercial UK website.

Two independent channels (one ‘Normal’ and one more treble-voiced ‘Brilliant’ channel) both of which incorporate the Top Boost tone stack that Vox had used on the later AC30s. The channels can also be used simultaneously (using a Y-switch or cable) for even more tonal options.

This is a late AC50 MkIV head built by Dallas Industries who bought Vox in the early '70s and reintroduced hand-wired AC50 and AC30 heads to be produced in their state-of-the art facility. This is completely hand-wired and as well built as any of the JMI era amps and actually incorporate some improvements on the original design. These later amps used (now standard) 1/4" jacks for speaker outputs, for example, and there is a hum balance trimmer on the heater wires to minimise mains hum. The case is a well used but sound - I have chosen to leave the original, torn, grill cloth and replace missing logo (these came with the larger Vox logo unlike the earlier JMI-era amps) and handle.

The transformers and the majority of the preamp is original with only a few components replaced (some of the pots, some coupling capacitors) with good quality components before we acquired this amp. Sensibly, a previous owner has also had an HT fuse neatly fitted to protect the output transformer. I have thoroughly serviced the amp which has new filter caps, cathode bypass caps and the mains lead and earth have been rewired for added safety. The power and bias supplies required a bit of work, including replacing the two bias pots, but this amp now has a solid power supply and bias supply to the power tubes enabling the bias to be kept well within limits and the tubes balanced.

This is offered with a new set of JJ valves, Fully checked over by our consult amp tech, this also comes with a recent October 2025 PAT test so it’s good to go.

Shipping, collection and delivery:

You would be very welcome to visit and try this unit out before buying (just message me to arrange) and I will reserve the amp for serious buyers so you don't have a wasted trip.

I can also ship as listed by ParcelForce (with extra insurance) or deliver in person to much of Southern England (contact me for the price as I can't offer all the options on Reverb).

International shipping will be by courier and overseas buyers are responsible for any taxes or duties incurred.