Hi everyone, another newb here.
I have a question, and hope someone can and is willing to take the time to help me understand. Got the pre90 and plugged it in my system 3 days ago and have been enjoying it. System as follows:
Okto dac8 stereo with pi module for streaming (volumino) ––> topping pre90 —> McIntosh mc152 power amp —> wharfedale elysian 2.
Before, it was the same but without the pre90, so was using the digital volume control on the dac. Got the pre mainly as a preparation for a vinyl source at some future point…
The sound with the pre is different to my ears - very similar to what simplywyn described in post #922.
So, to my question: strictly from the electrics point of view (voltage, impedance…), is it expected/logical for the pre90 to bring any benefits?
DAC XLR:
- 4.1v rms full-scale
- Output impedance <100 ohm
Pre90 XLR @IN=5vrms, vol=0db:
- Input sensitivity 9.3vrms @0db
- utput impedance 40ohm
McIntosh mc152:
- Input Sensitivity (for rated output) 2.4 Volts Balanced
- Input impedance 22,000 ohm (balanced)
I’ve read lower impedance out into higher impedance is good… and that’s about it
Grateful for any help, thanks, and greetings from Munich!