It is actual compatible hardware though. And the opl chips etc are no longer made.

For myself emulation and FPGA are fine. But for speed running or any other number of things, actual hardware are important.

This is actual hardware. Yes simple arm cores can pretty faithfully emulate much of this. But that’s emulation. These are bespoke devices, built from actual old chips. Offering a level of comparability and predictability emulation can’t always achieve. It isn’t for everyone.

Adrian Black ended up with a non functioning unit sent to him by a viewer that bought one. The seller rather than pay for postage for the broken one to be sent back to China just told them to keep it and sent them a replacement instead. Adrian ends up troubleshooting and fixing it but you can get a pretty good look at everything going on inside and some of the old chips involved.

Or haiku.

Prove your claim first then ask him to prove his. Even you yourself just admitted such things existed before capitalism. Therefore you concede his point. Prove your point.