None of them are precisely rated neither old or new niether McCormack or Pass or Krell or whatever. All you need to know if it's enough for your speakers + maybe little-bit overpower.
3 responses Add your response
Yes the McCormack DNA-1 was conservatively rated @ 150 watts into 8 ohms at first. Later it was found that it was rated @ 185 watts into 8 ohms. I saw the difference in the DNA-1 manuals I was able to retrieve. Then I contacted SMc Audio to verify the difference. If you have any doubts call or e-mail SMc Audio or McCormack of Virginia. Both companies are easy to talk too and willing to help.
Hi Bjue -
The actual measured difference is very small - the DNA-0.5 was rated at 100W into 8 ohms and would hit about 120W before clipping. The DNA-125 is rated at 125W into 8 and will hit at least 130W before clipping. The important difference (in terms of power) is that the DNA-125 has a slightly larger transformer which will deliver more current into low-impedance loads. Not that the DNA-0.5 is any slouch in this regard, but the DNA-125 is better.
With typical 4 - 8 ohm speakers in a typical room, both amps will do a fine job.