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In the Forum: Melquiades Amplifier
In the Thread: Valve Preamplifier for Macondo/DSET
Post Subject: Get more DB from you tunerPosted by Romy the Cat on: 8/7/2023
 N-set wrote: |
…in particular TU-X1 tuner needs quite some
amplification….
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It is not necessary the
case. My TU-X1 has nigh output, no different than all of my other front ends.
If you look at the schematics of the TU-X1 then you might find a chip per channel
that is responsible for output stage. This chip has feedback and right there
will be a trimmer resistor that adjusts the depth of that feedback. I lowered
the feedback that sent to this chip and got if I remember correctly 10 or 12 dB
more from the TU-X1. Whatever I got I made it to be the same as my Bidat DAC.
At that time, I did a lot of experiments to ensure that getting more gain from TU-X1
will not impact its sound. I did not detect any meaningful difference, at least
in context of FM broadcasts. Rerurn to Romy the Cat's Site