Audiovalve RKV schematic (hybrid headphones amp)

00940 · 7th October 2007, 08:37 AM

A long time ago I was asked by someone on this board if this schematic was available. I just discovered a website on which it is yesterday. The website got the authorization to publish it from the designer (Helmut Becker).

So, the schematic (and everything else you could need) is here : http://www.jogis-roehrenbude.de/Vers.../PCL805-KH.htm

It's a very good headphones amplifier as is, at least for the mid to high impedance headphones (120ohms and above). Well, maybe it could be improved for low impedance ones. With other tubes ?

Gordy · 7th October 2007, 09:35 AM

I may not understand the language but I can read a circuit diagram!

The home page of the site, from the link at the bottom of the page, also has much information.

Thanks for posting this.

KaDe · 8th October 2007, 12:04 AM

Yeah, this amp is great for OTL with Philips 800 Ohm fullrange speakers as well.
I have build mine in the 1980th when it was available from Helmut Becker as a kit.

7th October 2007, 08:37 AM	#1
00940 diyAudio Member Join Date: Sep 2003 Location: Paris	Audiovalve RKV schematic (hybrid headphones amp) A long time ago I was asked by someone on this board if this schematic was available. I just discovered a website on which it is yesterday. The website got the authorization to publish it from the designer (Helmut Becker). So, the schematic (and everything else you could need) is here : http://www.jogis-roehrenbude.de/Vers.../PCL805-KH.htm It's a very good headphones amplifier as is, at least for the mid to high impedance headphones (120ohms and above). Well, maybe it could be improved for low impedance ones. With other tubes ? __________________ Ben.

8th October 2007, 12:04 AM	#3
KaDe diyAudio Member Join Date: May 2007	Audio Valve RKV Yeah, this amp is great for OTL with Philips 800 Ohm fullrange speakers as well. I have build mine in the 1980th when it was available from Helmut Becker as a kit.

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7th October 2007, 09:35 AM	#2
Gordy diyAudio Member Join Date: Nov 2006	I may not understand the language but I can read a circuit diagram! The home page of the site, from the link at the bottom of the page, also has much information. Thanks for posting this.

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