The Paul Hynes SR4 PSU

[Superdad]

6 hours ago, str-1 said:

Audio Bacon has just compared the Uptone LPS-1.2 to the SR4

 

https://audiobacon.net/2018/09/20/uptone-audio-ultracap-lps-1-2-out-the-gate-musicality/

 

Yes, Jay enjoyed both the SR4  the UltraCap LPS-1.2 and we appreciate it.

I’m just scratching my head about why he went on and on about AC power cords (though for the LPS-1.2 he liked it best with the 18-inch cord we supply—going straight into the wall). The experience of most of our clents is that the DC output cable is where further gains are to be had.  

 

[Superdad]

1 hour ago, greenleo said:

Where is the SR7 thread?  

 

https://www.computeraudiophile.com/forums/topic/37373-the-paul-hynes-sr7/

[Superdad]

5 minutes ago, mitch751 said:

can I use SR4 9v to charge ultraRendu, the manual said 6-9v, but 9v is not recommended ..

 

thanks

 

The ultraRendu will run fine from 9V. It will just get a little hotter than at 7V, but nothing to worry about. As long as your DAC is not drawing a full 500mA of 5VBUS current from the ultraRendu's USB output you might not even notice.

[Because if for example the full USB2.0 spec limit of 500mA was drawn, the math (9V>5V drop is 4V, times 0.5A) shows an extra 2 watts of heat would be dissipated inside the case--in addition to whatever all the other linear regs of the ultraRendu will be dissipating.]