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In Reply to: RE: So, is it safe to surmise that if a preamp has two... posted by kentaja on July 22, 2017 at 09:46:51
Actually, all you have to do is try it. If your preamp has two main outputs, it is obviously designed for connecting two amplifiers. I have a Vacuum Tube Audio SP14 Preamp and mine works just fine with my Parasound Halo A21 amplifier connected to one set of outputs and my two Rythmik powered subwoofers connected to the other set of outputs.
All you have to do is try it because you can't hurt anything by trying it. If it sounds fine then you're good to go.
Good luck,
John Elison
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Follow Ups:
Just because you have a preamp with two outputs does mean you can hook up any old thing to those outputs. One must be careful with the actual load the preamp will see. This is not rocket science just basic electronics. Drop the load below what the preamp wants to see and the sound will be degraded pretty dramatically. If one likes the bad sound so be it.Solid state preamps are far more flexible in this regard than tube preamps.
Edits: 07/22/17
> Drop the load below what the preamp wants to see and the sound will be degraded pretty dramatically.
I don't know why you're arguing with me. I understand electronics, too. I was an electronic technician for years. There is no way you will hurt anything by connecting two amplifiers in parallel to your preamp outputs. If you take the time to read what I wrote you would see that I said exactly what you just said, only in reverse. In other words, I said to try it and see how it sounds. If it sounds good then you're good to go.
My tube preamp sounds great connecting an amplifier and two subwoofers to both sets of preamp outputs.
Try it and find out how it sounds. You can't possibly hurt anything.
Agreed. It is not going to hurt anything to hook it up.
Hi, John,
My setup is basically the same configuration and I've been enjoying it for a few months now. I was just wondering how far into the conventional warning zone, i.e., less than a 1:10 ratio of output impedance to input impedance, I'm operating the preamp. I tried using a tubed buffer stage to effectively lower the output impedance but I didn't like the resulting sound.
Guess I'll just keep on listening to what I have set up and enjoy the music. '-)
Regards,
Tom
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