There's a high end store here in town that carries both the Levinson gear and B&W speakers. I've heard the B&W 800D and 802D speakers run with Levinson gear quite a few times. I don't know if I actually ever heard it with the 432, but the B&Ws always sounded good to me with the Levinson gear. The 432 is 400/800 watts into 8/4 ohms, so that should be plenty. I ran my B&W Silver Signatures with a 50 watt Krell KSA-50S for years.
I've never heard the Bryston amps, so I can't be of any help here.
Chuck
I've never heard the Bryston amps, so I can't be of any help here.
Chuck