Purifi Class D: Junk?
No, it is not, especially with the Hypex amps. The input is meant to be driven by a very low impedance source.Once again, you have no idea! The input impedance of the NC500 Hypex is 2k across the band, and can be driven by any buffer from a source that has 50ohm or less output impedance and the voltage gain needed to give you the max level that you need listen to. Once again, you have no idea!! I'll try to get my friend who heard it yesterday to post on it. |
George asked me to comment here. Happy to do so as I have no bias either way. But having bought, sold, reviewed & listened to enough audio for 3 lifetimes, I do have an opinion. I had the pleasure of hearing George’s Hypex NC500 mono’s driven direct (no Buffer) on his secondary system yesterday. Driven from the MSB Discrete R2R dac, it would have to be the cleanest and most dynamic Class D reproduction I’ve heard to date. And I’ve probably heard 30+ different Class D Systems over the years. Extremely low, coherent & powerful bass that remained tuneful at all times. Musical structure & impact maintained across all frequencies. For Class D and in fact any amplifier technology, the sound was superb by any measure. |
georgehifi8,490 posts02-17-2021 10:28pmNo, it is not, especially with the Hypex amps. The input is meant to be driven by a very low impedance source.Once again, you have no idea! Well I have listened to enough audio equipment for 5 lifetimes, do I win a prize? I actually know how to design an amplifier too. People who actually know something about high performance analog design (and Class D), can reference the data sheet here on the HYPEX website. Now consider the transient performance with the source 2 meters away in a high speed feedback loop for Class-D. |
Like I said, you have no idea, even with proof from Scott. Also no idea either on streamers, all are still waiting for you to prove yourself right to everyone. We’re still waiting for your proof with links and CD cat. no. to prove you know what your talking about |
tradeontheweb, Yes, I noticed you have attempted to come to george's defence when he was making a fool of himself, like here: https://forum.audiogon.com/posts/678981 (where you both were wrong) and here: https://forum.audiogon.com/posts/1422053 where you help with his even at that time ignorant knowledge of Class-D (which has not improved in 4+ years I see. and here: https://forum.audiogon.com/posts/1455259 ... where you help with his ignorance on DAC technology. Strange, seems you often pop up when george is trying to make a point about something he is wrong about. What is up with that? |
