My new Head-Amp finished...!

Cobra2 · 6th March 2005, 12:06 PM

Finally, (pcb have been lying here a long time), a new head-phone-amp is done. It's "QRV-03", one of "P-A" 's constructions, and the second of his, that I built. (First was the QRV-02).

Sound is full, detailed, refined & "airy"...until my wife confiscated it...
No problem, I still have the QRV-02...only problem; I have only one set of Sennheisers

Arne K

Cobra2 · 6th March 2005, 12:07 PM

Pic: QRV-03

Cobra2 · 6th March 2005, 12:08 PM

Pic : internals

1543 · 6th March 2005, 01:13 PM

Hi Arne,

nice Head-Amp. Why you don't use a shielded wire for internal wiring? Make a try and use your internal wiring as a chinch inconnect and compare it with a good shielded interconnect. You will be astonished about the difference. It is often usefull to mount the attenuator in the back part of the enclosure an use a a extension rod between attenuator and button at the front panel.

My favorite interconnect is the Voodoo-Cable from

http://www.dope-sounds.de/

Regards,
Arne

Cobra2 · 6th March 2005, 01:21 PM

About internal cabling; I use as little shielded cable as possible, rather twisted.
I use good quality silver, or silver-coated cable, always with teflon insulation.
Tried a old interconnect cable internally in my previous amp, but preferred this version.
(BTW, trafo is shielded).

Arne K

Upupa Epops · 6th March 2005, 01:41 PM

To 1543 : ... for best sound sprinkled by blood of young **** !

Cobra2 · 6th March 2005, 01:44 PM

CD of Rose Laurens(?) Voodoo Master

Arne K

jacco vermeulen · 6th March 2005, 01:49 PM

Quote:

Originally posted by Upupa Epops
for best sound sprinkled by blood of young **** !

Excuse me ?

You must like plastic look volume knobs in front of expensive switches.

Upupa Epops · 6th March 2005, 01:55 PM

To Jacco : I don't like plastic knobs same as wizard's blables

.

1543 · 6th March 2005, 07:22 PM

to Upupa Epops:

what do you want to say? Is your opinion that shielding and good cables (such as teflon or mica isolated solid silver) are nonrelevant?

Arne

6th March 2005, 01:21 PM	#5
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	thanx About internal cabling; I use as little shielded cable as possible, rather twisted. I use good quality silver, or silver-coated cable, always with teflon insulation. Tried a old interconnect cable internally in my previous amp, but preferred this version. (BTW, trafo is shielded). Arne K __________________ Ars longa, vita brevis

6th March 2005, 01:44 PM	#7
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	Cannot find CD of Rose Laurens(?) Voodoo Master Arne K __________________ Ars longa, vita brevis

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6th March 2005, 01:13 PM	#4
1543 diyAudio Member Join Date: Jun 2004 Location: Ruhrgebiet	Hi Arne, nice Head-Amp. Why you don't use a shielded wire for internal wiring? Make a try and use your internal wiring as a chinch inconnect and compare it with a good shielded interconnect. You will be astonished about the difference. It is often usefull to mount the attenuator in the back part of the enclosure an use a a extension rod between attenuator and button at the front panel. My favorite interconnect is the Voodoo-Cable from http://www.dope-sounds.de/ Regards, Arne

6th March 2005, 01:41 PM	#6
Upupa Epops diyAudio Member Join Date: Aug 2003 Location: Prague,Czech Republic	To 1543 : ... for best sound sprinkled by blood of young **** !

6th March 2005, 01:55 PM	#9
Upupa Epops diyAudio Member Join Date: Aug 2003 Location: Prague,Czech Republic	To Jacco : I don't like plastic knobs same as wizard's blables .

6th March 2005, 07:22 PM	#10
1543 diyAudio Member Join Date: Jun 2004 Location: Ruhrgebiet	to Upupa Epops: what do you want to say? Is your opinion that shielding and good cables (such as teflon or mica isolated solid silver) are nonrelevant? Arne

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