That matches 1:1 exactly to what i said. There is nothing to explain. These screenshots agree with everything i said.
Volume Control = Voltage Control. Perfectly described in form of images.
On High Gain, the Volume is remapped to allow you to go higher (but have less steps).
On Low Gain, you have 120 Steps with 0Vrms being the lowest and 0.6Vrms being the highest.
On High Gain, you have 120 Steps with 0Vrms being the lowest and 2Vrms being the highest.
So you have less fine volume control, but you can go higher in total.
068/120 on Low Gain and 046/120 on High Gain are the exact same Volume and have the same Voltage so they will sound 100% identical.
Again, its an Full Digital Amp, that is how Full Digital Amps work. The Volume Control tells you, how strong the Amp ampliyfies (by increasing the voltage), you do not need any further volume control ICs or something like that.
That is completely different to an Analog Amp.
On an Analog amp the 120/120 Volume Control, Controls the output Signal of the DAC and the Gain Switch, controls, how strong the Analog Amp will amplify that signal.
Thats completely different.
For example if 060/120 on High Gain and 120/120 on Low Gain are the exact same Volume, unlike with Digital Amps, there will be a difference.
Volume | Gain | DAC Volume | Amp Volume |
120/120 | Low | 100% | 50% |
060/120 | High | 50% | 100% |
Because the DAC and the Amp, both perform different on 50% and 100%, the result will be different. So 060/120 on High Gain and 120/120 on Low Gain are not the same even though it will result in the same volume.
On Low Gain you have an very big and noise free input signal that you only need to amplify a tiny bit (best case).
On High Gain, you have an very low input signal with more noise and you have to boost that a lot (worst case).
But with the S-Master HX, its different, because its an Full Digital Amp (for the purpose of simplification, we will just say that 060/120 is 50% volume of 120/120 and that High Gain is double the power, its getting too complicated otherwise and too confusing)
Volume | Gain | Amp Volume |
120/120 | Low | 50% |
060/120 | High | 50% |
You see, its the same. Because its an Full Digital Amp. The S-Master HX will do the exact same things on 120/120 Low Gain and on 060/120 High Gain. It will have the identical performance.
The S-Master HX is made with switching MOSFET. If you are amplifying with the same Voltage, the result will always be the same.
There is no reason why the MOSFET should behave different on High Gain than on Low Gain, why would they? There is no need and no reason to.
That is all the High Gain Switch does. It remaps, what is 120/120 and the steps in between. Nothing more, nothing less.