nakamichi pa5 or 7

I owned a Nakamichi PA5A MkII. This stock version had 150wpc with large heat sinks and never got hot. The earlier version had 100wpc w/no heat sinks and did get hot. Perhaps, Nakamichi changed the bias between the two versions. I was very happy with the MkII driving my speakers w/ribbon drivers. But, when I switched to electrostatics, the amp was unable power them. So, if you purchase this model Nak, be sure that your speakers aren't too demanding. I don't have any experience with the PA 7. You can find out more at AudioReview.com.

I think I burned the fuse on my PA5; anybody know the specs for a replacement fuse.

If the amp works when you get it perfectly, it will continue to work. Buy a pristine example and it will last you a lifetime as long as it has room to breathe. There are a few people online if you search forums online that will be of assistance if your amp has trouble, but based on the amps design, nothing will go wrong provided you have a 20A outlet and sufficient ventilation and you arent driving anything like electrostats. It will even drive maggies, however I wouldnt try to power any large monsters with the amp.

hi. i would like to know difference between pa5e e pa5II.
can you help me?

Power rating is slightly more. I belive it weighs a few more pounds as well. Looks are the same. Obviously, decals in the back will also let you know the difference. The amp runs cooler as well