That is a problem, I would suggest you not to buy it.
Amstrad computers only connect to the monitors by means of RGB, so you will need an RGB capable TV set or monitor, and to make your own cable.
Also, the Amstrad monitors contain the ocmputer's power supply, so without a monitor, you have no power supply. You'd have to adapt some other power supply (an ATX one?) to run with the Amstrad.
Or was it an Amstrad 6128 Plus? In which case, you might be able to get it to run a bit easier (I think that one does come with its own power supply). Was it white?
In all, the same PSG chip is found in other, more accessible platforms, like the Spectrum. I'd recommend you to grab that instead and, since this would be your first foray into old computers, I might even go ahead and actually suggest you to just run an emulator, if at all.
[edit] Checked around, the 6128 Plus still needs an RGB connection and an external power supply. The monitor was again the one that had it all. Smart way to sell monitors, don't you think?
Here's an eBay seller selling as solution. You'd still need an RGB SCART capable TV (not all SCART capable TVs are wired for RGB. My TV only has ONE input wired for RGB, the other one isnt)
http://www.ebay.co.uk/itm/AMSTRAD-464-6
0822935111
Last edited by akira^8GB (Jan 23, 2012 10:00 pm)