Responses from audio2design

USB cable
You almost always will need the ground as the common mode range of the differential transceivers is rather small.  
Purifi Class D: Junk?
Oh george, you must realize by now that everyone knows you are the looney bird here. Quack quack.  
Purifi Class D: Junk?
tradeontheweb,Yes, I noticed you have attempted to come to george's defence when he was making a fool of himself, like here:   (where you both were wrong)and here:   ... 
Purifi Class D: Junk?
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! The input impedance of the NC500 Hypex is 2k across the band, and ... 
Purifi Class D: Junk?
Linear power supplies on amplifiers draw current in large peaks, much higher than the average power current draw. A 500W isolation transformer will act like an inductor with a current limiter. It may be better, it may be worse. 
Sound Quality of red book CDs vs.streaming
lalitk, you are pushing a rope trying to talk to people who have ignorant dogmatic ways. Some people just can't accept things they don't understand. 
Purifi Class D: Junk?
I can remember how something sounded 10 years ago.....really! RighhhhtttttttMost people can't pick their own speakers out of a line up once they are gain matched and frequency compensated, and often not even with frequency compensation.You may re... 
Purifi Class D: Junk?
georgehifi8,489 posts02-17-2021 7:10pmIn my past experience with the Nord Hypex NC500 monoblocks using the Sparkos and Sonic Imagery opamps, the differences were pretty obvious.Best is no buffer at all, direct in, as I’ve done. (you don’t need a... 
Takedown of pricey servers, streamers OCD HiFi guy
Not only the aesthetic, but more importantly (to me at least) the sonic differences between many servers from DIY $500 dollar units to cost no object devices is not only real but also SUBSTANTIAL. This truth is no different here than it is in ... 
Purifi Class D: Junk?
While on one hand, op-amps in the same circuit can sound different, which often says far more about the circuit than the op-amp, anyone claiming to be immune to sighted bias is delusional. If you can't be honest with yourself?Circuits need to be t... 
Purifi Class D: Junk?
What an entertaining thread. A bunch of people (mainly) with obviously from this thread and others weak engineering skills (at best) with odd exception pumping their chests and egos while arguing about things they poorly understand while making wi... 
Topping A90 failure issues. Should I try a 3rd A90?
External power supply? Did you replace the power supply when you replaced the 1st one.? 
AC outlets
See oldhvy we agree on some things. Even you have limits to how much snake oil you can stomach.People go gaga over rhodium plated. Hard and a poor conductor. Literally the worst qualities in a contact plating. That says a lot about the market ... ... 
My list of tweaks and the verdict
Indisputable scientific facts ... Nothing like gross hyperbole for a Monday!   Longer power cords, but you better make sure those fuses are really low resistance ...Please don' replace the metal case of your amplifier with a wood one. Just takes o... 
The guru on fuses:
And this lends any credence at all to audio reproduction how?