Convert your Spectrum to whatever BASIC ROM you wish to use!
Usually this will be Geoff Wearmouth's fantastic "Gosh Wonderful" ROM, but it can be anything that's 16K in size.
Your Spectrum will be modified to take an EPROM instead of a normal ROM, and we'll even provide the EPROM to take it. Send us your Spectrum and we'll send you it back with the new ROM!