It is my understanding, the smaller sized 180/150/140 type amps have provisions to power certain Naim preamps without a separate outboard power supply.
The larger 250 and mono amps do not have provisions to power a Naim preamp direct and will require a separate power supply.
Try the NAIM forum, those folks will provide you with more details/ideas/opinions than you could ever imagine.
The larger 250 and mono amps do not have provisions to power a Naim preamp direct and will require a separate power supply.
Try the NAIM forum, those folks will provide you with more details/ideas/opinions than you could ever imagine.