Help with inwall sub amp

You could use a crown amp which has a crossover in it. Another option would be in wall subs from SVS that comes with an amp. 

https://www.svsound.com/products/3000-in-wall-subwoofer

Hello!  Just to wrap the thread: I went with the Paradigm MilleniaSub which I wall mounted with their optional kit, and it's perfect.  Not hidden, but unobtrusive and provides great sound.  Super easy to install and the wall mount dampeners eliminate any buzz or rattle from the sub.  Super happy!

Thanks so much! Ok, it needs an amp and agreed, Class D is the way to go (I have tubes elsewhere and they’re glorious!) So how much of a difference will the B&W amp make over something similarly sized but different brand? @audiotroy you mentioned an EQ; is this to tune the sub output?

I looked at the Bluesound Pulse Sub as an option but the reviews don’t sound great.

There are some small subwoofer amps (yay small footprint!) on Amazon, but I don’t recognize the brands and I wonder what $150 actually buys these days. Then there’s Schitt (almost want it for the name alone) VIDAR with this nice AB amp that might be overkill....

Would another Node work? Other options?

Cheers, Alec

You can also find some shallow, powered, floor standing subs that can hide between a couch and wall.

These subwoofers require a subwooferamplifier which usually has specific eq yo need the amp designed for this subwoofer

Yes, you'll need an amplifier.  For an adequate subwoofer amplifier of that size, you'll probably be looking at a Class-D type.