@stevemcx What are the rated RMS and peak currents? I’m by no means an expert, but I wonder why your amp was designed with a low input impedance (10k ohms), which tends to create an impedance mismatch issue. Since it is transformer-coupled, could the input stage be adjusted to increase its impedance? Thanks.
McCormack DNA 500 vs DNA 225 upgraded
I am looking for some feedback on comparing the stock DNA500 to a DNA225 upgraded by Steve McCormack. There were a few posts that only touched that subject. I am thinking about adding one of those amps to my system and relegating the HT5 to the surrrounds and center.
The DNA500 has amazing reviews, as the DNA225 upgraded also does. Is there a benefit to either one? I notice at this point there are no upgrades available on the SMC site for the 500. I imagine the cost for either is similar.
Thanks again for any help. This forum has been outstanding for me to learn from.
The DNA500 has amazing reviews, as the DNA225 upgraded also does. Is there a benefit to either one? I notice at this point there are no upgrades available on the SMC site for the 500. I imagine the cost for either is similar.
Thanks again for any help. This forum has been outstanding for me to learn from.
Showing 2 responses by lanx0003
Thank you for the response, @mitch2. Very kind of you. It is strange that the input imp. vary across the different model same series - 100k for DNA 225, 10k for DNA 500 and 13k for the mono DNA 750. The measurements by Stereophile on the 225 show 91k ohm for its input impedance and ideally low 0.07 ohm for the output. Don't quite comprehend the inconsistency. |