WJA Electron Audio

WJA Electron Audio

High End Audio

I have long been spending my money on commercial high end equipment.  in the late 80s (when i was broke) I designed and built solid state pre and power amps loosely derived from an article in an Electronics journal.  I used them for some years until my flat was burgled and they took the pre-amp along with my turntable.  I replaced the solid state pre with a Croft super micro valve/tube pre and immediately loved it, but it couldn’t drive ancilliaries.  Later I purchased a 2nd hand Audio Research SP9 which stood me in good stead for about 15 years.  I also ran an Audiomeca Romeo Romance TT/arm with and AT ART1 cartridge during this time.
However I always had some small missgivings about the sound…  that initially I blamed on the arm and/or cartridge as misstracking… So I built my own turntable based on a Scheu plater, bearing and motor.  Still I was not fully satisfied, although I had a large improvement in resolution. So I did a little research (read lots and lots) on some of the crazy high end guys on the web, and I decided to have a go at my own pre-amp to replace the SP9.  Much to my surprise it was a huge improvement and the “misstracking” (read as evil feedback) was gone. On the following pages are some details about the design and the surrounding system.

Vacuum valve/tube audio design
The pre-amp

Russian 6c45pi utilized in the pre-amp

Although not a direct commercial operation related to my own business, WJA Electron SARL  (www.wjaelectron-com.preview-domain.com), I may one day build the pre-amplifier or something similar (and possibly a power amplifier) commercially. That depends mostly on my patience with the world of high tech industry.  For that reason I do not publish exact component values on this site.  But I am happy to discuss if you contact me… Although I may not be very fast to respond as my real job keeps me on planes a lot.

The pre-amp

Russian 6c45pi utilized in the pre-amp

High End Audio

I have long been spending my money on commercial high end equipment.  in the late 80s (when i was broke) I designed and built solid state pre and power amps loosely derived from an article in an Electronics journal.  I used them for some years until my flat was burgled and they took the pre-amp along with my turntable.  I replaced the solid state pre with a Croft super micro valve/tube pre and immediately loved it, but it couldn’t drive ancilliaries.  Later I purchased a 2nd hand Audio Research SP9 which stood me in good stead for about 15 years.  I also ran an Audiomeca Romeo Romance TT/arm with and AT ART1 cartridge during this time.
However I always had some small missgivings about the sound…  that initially I blamed on the arm and/or cartridge as misstracking… So I built my own turntable based on a Scheu plater, bearing and motor.  Still I was not fully satisfied, although I had a large improvement in resolution. So I did a little research (read lots and lots) on some of the crazy high end guys on the web, and I decided to have a go at my own pre-amp to replace the SP9.  Much to my surprise it was a huge improvement and the “misstracking” (read as evil feedback) was gone. On the following pages are some details about the design and the surrounding system.

Although not a direct commercial operation related to my own business, WJA Electron SARL  (www.wjaelectron-com.preview-domain.com), I may one day build the pre-amplifier or something similar (and possibly a power amplifier) commercially. That depends mostly on my patience with the world of high tech industry.  For that reason I do not publish exact component values on this site.  But I am happy to discuss if you contact me… Although I may not be very fast to respond as my real job keeps me on planes a lot.

Important links

Contact

WJA Electron S.A.R.L.
216 Route du Mas de Soulié
46230 Cremps, France
International VAT Number: FR08503863136

© 2024 Created with InfinITiServe 

Contact

WJA Electron S.A.R.L.
216 Route du Mas de Soulié
46230 Cremps, France
International VAT Number: FR08503863136

© 2024 Created with InfinITiServe 

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