Hitachi W-Series Smart Wi-Fi Speakers

Dear NashKiwi_Al thank you for your complete explanation. Very useful, much appreciated.

I have a W100 (Lounge) and a W50 (workshop). Pros: nice sound. I can play using bluetooth, attached Chromecast audio (AUX) or using the app. I have a NAS with all my music loaded, and can play /queue from the central source using the app. Grouping is good, to play synchronised tunes throughout the house. Cons: I find after a power outage, I need to manually switch on the unit again - it keeps all my settings, but need to press the button in the back. App is so-so - I find I need to continually close /re-open the app (rather than just switching to it), and it often takes a couple of attempts to find the NAS. Changing wifi neyworks is a little complex - I ended up doing a factory reset. Bluetooth tends to disconnect after a period of inactivity - I have it paired with my Alexa, and sometimes I need to disconnect /connect to play music Overall, it's cheaper than most of the competition, with decent sound, and as long as you have some dexterity with the app it works well. I am probably going to get another...