Jeff Rowland 625 amp ... & 725

Clavil,

I still have my Sonus Faber Concerto Domus hooked up.
I need to rearrange my listening room for more space around my Apogee Stages...

Check out this site for the Rowland gear:

http://cybwiz.blogspot.com/2012/01/jeff-rowland-model-725-mono-amplifiers.html

Claude, I believe that the new PSU Power Unit may be an external supercapacitor-based power supply that can be applied to deliver DC to Corus, Aeris, and the upcoming Criterion replacement. I do not have any details from JRDG, but knowing a little about supercapacitors, it is likely that PSU may yield a great deal of transient authority to applicable devices.

And just in case you were asking.... No, you can't apply PSU to any power amps.... Just not enough current for that.

G.

Google:

wizardhighendaudioblog

click on the "CES" link

click on "amplifiers"

scroll down & you'll find pictures of the 625, 725,
and PSU.

the PSU is as large as a good sized preamp.

it will probably be expensive!

Looks like JRDG has finally posted M725 mono amp specs at:

http://jeffrowlandgroup.com/kb/questions.php?questionid=592

Purely from memory.... 330W at 8 Ohms, 640 at 4 Ohms... 1500W power supply with PFC, ceramic boards, class A/B... no overall feedback.

Guido

640 at 4 Ohms... 1500W power supply with PFC

I don't understand ?

and PFC or PSU ?