View Full Version : Bit-correct digital out on Squeezebox?

Neil Hastie
2005-02-27, 10:41
You have unfortunately hit a known "issue" with the squeezebox.
It has beeen reported on a number of occasions that some high end DACs
will not lock correctly to the squeezebox.

I have a friend with the original Audio Synthesis DAX, it will not lock to
the SB when playing FLACs, but locks perfectly with mp3s.
Another friend recently reported the same problem with the I
lastest Cyrus DAC-X.

So far I have seen no comment from SlimDevices on this issue.



>From: "Julian Alden-Salter" <julian.alden-salter (AT) ntlworld (DOT) com>
>Reply-To: Slim Devices Discussion <discuss (AT) lists (DOT) slimdevices.com>
>To: "'Slim Devices Discussion'" <discuss (AT) lists (DOT) slimdevices.com>
>Subject: [slim] Bit-correct digital out on Squeezebox?
>Date: Fri, 25 Feb 2005 20:28:25 -0000
>I use an audio synthesis dax decade with my squeezebox. I must first point
>out that I'm extremely happy with the replay however a few weeks ago I
>invited some friends round to have a listen to the squeezebox and compare
>to a couple of dedicated transports. The other transports were from dpa and
>Arcam both of which were judged (subjectively) to be better than the
>squeezebox by all present. Not a very scientific test I know but I agreed
>with the consensus and to my ears it wasn't a small margin.
>Now in the ultimate scheme of things a squeezebox / dac combo will blow a
>lot cd players away even some seriously expensive ones however I believe
>that it's jitter performance - especially with flac's is less than great.
>I say this because my dac (the aforementioned dax decade) has 2 methods of
>locking onto the digital signal - one which can lock onto low quality /
>jitter signals and one that will lock onto better quality / low jitter
>signals. This is denoted by the display of lock or xlock in the dac's
>Without fail if I play flacs I only get a lock however if I play mp3's
>either native or transcoded from flacs I get the higher quality xlock.
>What's going on, I'm not sure but it seems to me that there is more
>performance within the squeezebox than is currently accessible.
>I'm currently looking into the possibility of improving the clock within
>squeezebox which may help things.
>Of course for 200 quid it's a fantastic bit of kit but I don't think it's
>going to replace a true high end transport just yet. For me however the
>convenience of having my entire music library on hand far outweigh what at
>the end of the day is a 30%ish difference in quality.
>-----Original Message-----
>From: Michael Peters [mailto:funkyres (AT) gmail (DOT) com]
>Sent: 25 February 2005 19:14
>To: Slim Devices Discussion
>Subject: [slim] Bit-correct digital out on Squeezebox?
>On Fri, 25 Feb 2005 16:34:03 +0100, Steinar Bjaerum
><steinar.bjaerum (AT) online (DOT) no>
> >
> > I am thinking about playing an uncompressed WAV, recording the signal at
> > digital output and comparing the recording with the original WAV.
> >
> >
>Be careful when you are doing so - a lot of sound cards will resample
>digital input.
>AC97 cards do, for example (or so I've been told)
>I believe M-Audio Audiophile 2496 does not, I don't know about their
>other models.
>Again, that is what I've been told. I have not done any testing
>myself, mp3 at 192VBR is good enough for me (though I do archive
>lossless in flac).