R.I.P. AY

Get your brand new ZX Spectrum hardware at: zxspectrum.shop/ !
The current version of the AVR AY does not have I/O, but only takes care of the sound part.
So for a replacement on a computer mainboard that uses the I/O ports, an original AY-3-8912x replacement chip is required.
But for Harlequin kits and other sound devices, it's a perfect choice.
You might notice a slightly offtune sound comparing the AVR AY to the AY-3-8912, which will be fixed in the final version that ByteDelight will be producing.
It's caused by the clock frequency on this AVR AY, which is 1.75MHz for Pentagon machines - the ZX Spectrum version will be 1.77MHz.