That’s because there isn’t one. There is no “best”. The choice of line voltage setting is to ensure a reasonable match between the dCS unit and your particular set-up which will vary according to the music that you listen to, the input sensitivities of your equipment, the gain of your amplifiers, sensitivity of your speakers, the size of your room and how loud that you like to listen.
So how do you choose? You do not need test equipment to decide, you simply pick a voltage that allows you to set the volume control where you have control over what you hear and the input signal is not so large that you effectively only have a choice between no sound or too loud, drives the amplification into clipping or conversely is so small that no mater how much you turn up the volume control it remains too soft.
6v is best only if a) ones pre amp can handle 6v with out clipping or b) you are going direct to an amp and can ride the top 10dB of the volume. Otherwise 2v should be a better match
It’s possible. What I really like about the advanced reasoning models of OpenAI is that they seem so well engineered and fine tuned. In about two weeks they are releasing o3.
Strange as usually direct to a amp requires a lower output voltage - allowing the digital volume control of the dCS to remain in the sweet spot utilizing less attenuation
Sometimes it’s track dependent, I found. “Living Proof” by The War on Drugs sounds way better with 2V than 6V on my system. The music is too boomy and too bright at the end with 6V. It may be due to the recording.
