So, $100 gets you a full ARC parametric room EQ box + DTS streamer with calibrated Mic. $150 for the poor and unfortunate man's DTS Wiim Amp substitute with Mic.
Since Wiim's release there is little market for these at normal pricing though the RoomEQ is more sophisticated and includes the measurement part. But, they are a lot of fun if you think fiddling with mediocre but useful ARC/DTS software/hardware is fun like I do.
Note they are not compatible with Wiim LinkPlay or MiniDSP software/systems.
ARC software page. Last Windows update was 01/2023.
I do not think the Mic calibration S/N is likely MiniDSP compatible.
Amir's PW-Amp review, similar to ML Forte. I join dr0ss in recommending you read the reviews and user comments to learn about the experience that awaits you.