I own top of the line Shunyata conditioning gear and promise you that the best defense against surges and spikes is a whole house surge protector installed at the breaker box. ($250 installed)
Your Luxman will do best either plugged directly into the wall or into a non current limiting conditioner, but IMHO there isn't one of sufficient quality in your price range. You could try a $195 Shunyata defender at the duplex where your amp is plugged in. I believe music direct offers a free trial and the device does not limit current.
Your Luxman will do best either plugged directly into the wall or into a non current limiting conditioner, but IMHO there isn't one of sufficient quality in your price range. You could try a $195 Shunyata defender at the duplex where your amp is plugged in. I believe music direct offers a free trial and the device does not limit current.