Retrobit – Kartridże, akcesoria i płytki do Commodore 64, ZX Spectrum, Atari | Polska produkcja
The next advanced digital tape recorder design, intended for ZX Spectrum computers.
PCB colors to choose from: white or black. You can also select the top PCB with fields for installing SMD LEDs.
https://www.pcbway.com/project/shareproject/8BitWave_Module.html
