I'd love to see an article that talks about analog v. digital volume controls. For instance, what matters and what doesn't matter. Ideally with specifics, showing how and where information is lost or noise is introduced. i.e. you have 21bits of information going in, how much information do you have coming out when you use a digital volume control.
What are good places to use them and what aren't?
It seems like the XDA-1 could be a good case study since people seem to find it's digital volume control lacking. Though being a 24bit DAC it should have been able to pull off an OK digital volume control, but did AD not implement a good digital volume control? (i.e. no interpolation/ditering) How many bits are lost?
What is theoretically a good digital volume implementation?
Last Edit: May 7, 2013 19:04:29 GMT -5 by GreenKiwi
Home: MacMini, DC-1, KD nCore nc400, Front - Mangepan 3.6, Rear MC-1, Ultra-12
Home HP: Mac --> XDA-1 --> LittleDot Tube MK VI (balanced) --> Senn HD650
Work1: Mac --> DC-1 --> Audeze LCD-XC
Work2: Airport Express --> Acuras Dia 100 --> MC1 & XRef 10
GEEK Pulse -- coming at some point - igg.me/at/geekpulseaudio/x/5211485
Storage via Bitcasa l.bitcasa.com/dGlmUe7v
Amp: XPA-1 gen 2 using XLR connections. Speakers: Axiom Audio m80 V3, Sennheisser HD600 headphones. two pairs 12 guage speaker cables per monoblock for biwire. Headphone amp: Basx A-100 (INCREDIBLE VALUE WITH HD600s!!)