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In the Forum: Melquiades Amplifier
In the Thread: Valve Preamplifier for Macondo/DSET
Post Subject: Of cause but I do not know if it maters.Posted by Romy the Cat on: 8/7/2020
*** … unless you are saying that the preamp Zout will possibly change the DSET filter phase somehow?
Yep, this is exactly what I am saying. Look the impedance of your preamp is factored in the source impedance of your channel’s filter. The argument you can make is that your channel is approximately 5kR each and your Zout is let say 20R. it very much might be negligible, but it might be not. You might see if the frequency crossover point change if you short the amp inputs vs load it with let say 50R. It might not have any practical meaning but on theoretical level the crossover point will certainly move, so will be the phase shift. What I would do is to listen a recording with very complex multi-layers imaging and see if the imaging will “curve” with the change of the preamp volume.Rerurn to Romy the Cat's Site