Do you have try the topologie of the QRV06 headphone amp for power amplifier ?
I am very interested with this topologie but maybe with differential input like the figure 13 on this document find in your site :
Sorry, but a danish guy has made a very fine current feedback POWER amplifier with a similar design as my QRV06/08
Sonny Andersen had his web site here http://mirand.dk/ but I don't know what happend to it. Send me an email if you want the pdf of the amp.
Thanks to your answer
The web site does not responding ...
Yes I would like the schematic pdf :)
I have sennheiser HD555 headphone, can I use the QRV08 ? how can I buy it and How is the kit ?
I sell only the pcb, no parts. The amp will work beautifully with any headphone.
SMD is not easy to build...
No version with BC550 560 ?
I'm afraid not.
is it possible to use your schematic for BC550 and ... BC139 or MJE15030 ?
You can use just about any transistor type. It's not very critical.
your schematic look like super linear circuit
but the mirror is not on the input
Sorry, but I must disagree....