I have a Duracomm DPS-75 Power Supply on my collecting dust. Got it for a good price after our club had an Astron fail on one of our repeaters. County Radio Shop loaned us a DuraComm DPS-55 (Amp) . We bought one
for $100 plus tax that has been in continuous use for 3 years now. The nice things about the DuraComms is they put out what they have full rated current available ALL the time.