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Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

RS-PA3 : A Fully Reed Switched PreAmp
RS-PA3 : A Fully Reed Switched PreAmp
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Old 8th January 2019, 02:12 PM   #1
catd is offline catd  Europe
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Join Date: Mar 2017
Location: Germany
Default RS-PA3 : A Fully Reed Switched PreAmp

Hi all.
A year ago I completed this project: A preamplifier in which volume controls and source switches are formed by reed contacts. These are actuated by permanent magnets.
The device has been in operation for a year now daily and works flawlessly.
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Last edited by catd; 10th January 2019 at 05:45 PM.
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Old 8th January 2019, 07:26 PM   #2
Bare is offline Bare  Canada
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Join Date: Dec 2001
Location: vancouver
Decently crafted build ..no arguement
But I'm wondering if this works somehow Audibly Better .. Because?
Never seen Transformer based volume controls then?
ps I have a reed switch in My 1982 Yamaha Lc 350 moto. And in the Windshield washer fluid reservoir of My car. Notably their performance is iffy.
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Old 8th January 2019, 11:35 PM   #3
MAAC0 is offline MAAC0  Portugal
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Join Date: May 2010
Sehr Schoene Arbeit.
Very nice work

Gruss aus Portugal
Greetings from Portugal
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