some web link for your reference https://www.audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-crown-xls-1502-amp.6062/ https://forums.audioholics.com/forums/threads/impressions-on-crown-xli-vs-xls-for-hi-fi-mains.110720/
Crown amp is only power amp so you need a pre amp, the cheapest way is using DAC such as Topping E30 which has volume control, Topping e30 is only NTD 3k...
sorry for the English input as I don't have Chinese keyboard
Thanks for your info. again, I’ll read it through asap, and I believe it’s gonna be helpful to me. Since I still have time, it’s also good to me to see if I need to use an integrated amp. or do the pre-amp+power amp combination (but at this moment $$$ is also a key factor due to house renovation )