QRV06 topologie for power amplifier

[Digora]

heaveno,

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 :

http://www.utdallas.edu/~heavenums/docs/JournalPapers/SmithCFBamp.pdf



Thanks :)

[peranders]

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.

[Digora]

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 ?

[peranders]

I sell only the pcb, no parts. The amp will work beautifully with any headphone.

[Digora]

SMD is not easy to build...

No version with BC550 560 ?   

[peranders]

I'm afraid not.

[Digora]

ok

is it possible to use your schematic for BC550 and ... BC139 or MJE15030 ?

[peranders]

You can use just about any transistor type. It's not very critical.

[Digora]

your schematic look like  super linear circuit

http://www.audiodesignguide.com/Headphone_amp/headphoneamp.html

but the mirror is not on the input

[peranders]

Sorry, but I must disagree....