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QRV06 topologie for power amplifier

Started by Digora, February 21, 2008, 08:29:53 PM

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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.
/Per-Anders Sjöström, owner of this forum

Homepage with my DIY hifi stuff

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.
/Per-Anders Sjöström, owner of this forum

Homepage with my DIY hifi stuff

Digora

SMD is not easy to build...

No version with BC550 560 ?   


peranders

/Per-Anders Sjöström, owner of this forum

Homepage with my DIY hifi stuff

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.
/Per-Anders Sjöström, owner of this forum

Homepage with my DIY hifi stuff

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

/Per-Anders Sjöström, owner of this forum

Homepage with my DIY hifi stuff