Spotify conect two accounts

[Giuse26]

Hi!!
My wife and I both have spotify premium accounts. We have recently bought a Yamaha receiver only because it supports connect. The devices logged with my account work flawlessly. None of the devices of my wife can connect to the receiver.

Is the receiver (Yamaha RX-V477) associated with my account?? If so, can it be connected to both Accounts? Changing to a family subscription would solve it?

Thanks in advance,

Carlos