dericchan1
500+ Head-Fier
Well, the digital volume of hqplayer is amongst industry best. Which is why the jplay iOS integration is so appealing. You now can skip the preamp altogether and your iPhone volume buttons can control hqplayer digital volume directly.The question of volume control inside the DAC has come up in the Gustard X30 thread. Many people connect their DACs directly to their power amps in a speaker set up to eliminate a preamp. The X30 designers chose to (waste money) implement a switched passive resistive with no (to save money) buffer. So the output impedance presumably is much higher as soon as you engage the volume control at useful levels of -20db ,40db, whatever gets the signal down to a normal listening level with the gain in the amps. which explains why the reviewers recommend not using the internal volume control in this DAC since it doesn't sound as good.
This prompted me to listen to the internal volume control in my X26III, which is digital, versus the volume control in HQ Player desktop, versus sending -3db of HQ Player through the fixed volume setting in the DAC to the excellent sounding dual mono/ dual balanced Muses volume control in my loaded Burson Soloist GT3 headphone amp. I had to set the amp gain to high and max volume to try -37db in the DAC and -39db in HQ Player with a setting of 30 or so in the amp with the HQP and DAC at normal fixed use. Roughly level matched by ear.
The volume control in HQ Player sounds excellent even at this amount of attenuation. Much better than the digital control inside the X26III. Which will be way better than the passive volume control in the X30. The sound with HQ Player at -39db is so good that the differences from the amp come down to plusses and minuses. The full scale signal with the amp controlling the volume has slightly more fine detail in the trailing edges and better depth, but the -39db in HQ Player has fuller images and is "easier". if not quite as see through detailed. The -37db in the DAC is slightly flatter and less detailed and hazier than the other two.
It is quite possible that eliminating any preamp and controlling the listening level with HQ Player will sound better. And be definitely better than the passive resistive control in the X30.
Or as Miska was referring to “hybrid volume control” - try setting your preamp fixed at certain level, that would enable your regular listening level while hqplayer digital volume to more or less -10db optimal level. Then you would simply use hqp volume control for minor adjustments a few db + or - of -10db
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