Upsampling Internet Radio ?

[PeterSt]

Yo,

The sweetspot of the 1704's will be around -21dB with a bandwidth of ~6dB. I'd have to dig up old measurements to see from exactly where to where it reaches, but that band is pretty flat.
Notice that this is fairly theoretical because it's very marginal. Think like a virtual difference of 0.0018% THD+N and 0.0030%. "Virtual" because this is including noise, and the SNR matters (read : the more output the better THD+N anyway).

I honestly don't care; I set the digital volume to whatever it needs (goes automatically as well of course when using the Normalized Volume, which I do). Otoh, when a (new) DAC measures 0.0030% at full scale, I hear that (for the worse) and that DAC will be rejected (it will already at 0.0021%). So I guess if you really sit down for it and would be able to keep the levels the same (preamp) and try to find that sweetspot, you might be able to (and which is what people report of course). But all a bit moot in my view because using the preamp deteriorates to begin with.

Peter

[christoffe]

Oh, sorry, beg your pardon (my age ........ .)

And then to think you depend on me.

Eh? Not intended!!! 

see this thread please = http://www.phasure.com/index.php?topic=1482.msg15553#msg15553

What we are writing here, are our own impressions to be discussed, nothing more.

Brian wrote a comment in this topic.

Joachim

[PeterSt]

Yes Joachim, and with the notice that that topic wasn't about any DAC sweet spots as such;
That topic emerged about 4 weeks before your NOS1 got stuck in the snow somewhere around Frankfurt. And 20 others somewhere else.

Peter

[christoffe]

Yes Joachim, and with the notice that that topic wasn't about any DAC sweet spots as such;
That topic emerged about 4 weeks before your NOS1 got stuck in the snow somewhere around Frankfurt. And 20 others somewhere else.

Peter

The topic was not my main reference Peter,
it was Brians comment on 2011-01-14 with the -3dB.

I started with the NOS1 (volume at ~ -24dB) connected to the power amp (no pre amp). 
During 2011 fuses blew at the PA 2 times and I implemented the preamp. Volume was set to 0,0dB and my impression was a better SQ. After some tests with the volume settings the final set was -3dB (on my system with the preamp).

At present the NOS1 (volume at ~ -30dB) is connected directly to a different PA, which has a fast DC Offset protection (so, no preamp), and I'm quite satisfied with the amazing SQ at 8x PA.

Joachim