ZX Spectrum 16k to 48k Memory Upgrade Kit.

The kit contains:

Upper RAM chips:

- 8 x 4164 (Samsung, NEC or similar)

The logic chips needed:

- 2 x 74LS157

- 1 x 74LS32

- 1 x 74LS00

And other materials:

- Wire links
- Printed instructions
- Solder

The majority of 16k models (issue 2 onwards) can be upgraded, and this kit is the easiest way to do it. 

    Note 1: Some soldering of the wire links may be required

    Note 2: All chips will be tested prior to dispatch. This includes testing in an actual ZX Spectrum so there may be some minor signs of the chip being used. This is unavoidable.