Oh the MiSTer is awesome! It’s like an emulation device, but instead of emulating with software it uses a thing called an FPGA (Field Programmable Gate Array). the short explanation of what that means is that the chip reconfigures itself physically to mimic the hardware of old systems, which results in super accurate, lag-free emulation. It also allows for both digital and analogue output, loads from mass storage like an SD card or USB hard drive, and works with the oldest systems up to things like the PS1.