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In Reply to: RE: ??? posted by Kal Rubinson on July 24, 2009 at 15:44:09
I have listened and not heard much difference between 100% and lower volume levels. Is it just a matter of it removing dynamic range or something? I do have 2 channels going to a CJ preamp for the front channels and can use that volume control for stereo listening but have not noted a difference yet. Even though I read that Oppo should sound best at 100%. I think that I have a pretty high resolution system now w/ Magnepan 3.3s, etc.
Follow Ups:
The Oppo (and most players) attenuate volume by dropping data so that you end up with about a 1bit loss for every 6dB of attenuation. If you cannot hear it, OK.
Kal
Amazing information, you guys really teach me a bunch. Thanks for this forum! Alan in sunny Seadrift
Vista Ultimate 32bit/Diamond XS Dac/ Sterovox coaxial line in to Insignia Amp/Cambridge SoundWorks& Infinity RS 1001 Speakers
The DAC's the Oppo uses have a 24-bit control buffer. That leaves 8 bits resolution for volume control before you lose information.
It's the same principle that Wadia used many years ago in their CD-player. There is a white paper from Wadia in internet which explains the principle.
Oppo themselves states that volumecontrol should not be lowered below 80% before degradation starts. I consider it might be somewhat more ..... ;)
Anyhow, if you do not need to use it, keep it at 100%.
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