A:AnswerIt has inputs that can be used for a turntable, BUT you need to have a phono preamp on the turntable output. Make sure you have a ground wire all the way from the turntable to the preamp and then on to the AV receiver.
A:AnswerYes. The speaker wires connect directly into the back of the receiver, and the receiver controls them. This receiver is also bluetooth enabled, so if you have wireless speakers, it will control them as well.
A:AnswerIn the option's menu go to "Tone Control". Choices: Treble, Bass. You can adjust it in .5 db (decibel) increments from -6.0 db to +6.0 db. It's a personal choice to how you like your music to sound. The majority recommend flat or 0.0 db. Again, it's up to your taste...there is no right or wrong although too high and you might lose some mid-range frequencies.
A:AnswerNot if you are using the console from the Bose system. It is a receiver itself. If you mean by "console went bad' that your receiver went bad, then this would work. You just can't connect two receivers together.
A:AnswerI'm not sure about Roku, but yes, I got an error message when I want to play Netflix from my iPad to TV that I previously have no problem with my old Yamaha receiver, it asks me to play Netflix directly from TV. But, I can play it through Apple TV without the issue, I guess the TV mentioned in the error message is referring to Apple TV, not my VIZIO TV.
A:AnswerBring up the input (for the video/picture you want) Go into the Options menu / Input Sources / Settings. You can change the audio to any input you select.