Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-06-04 Thread Themis

mswlogo;551752 Wrote: 
 Better yet. Why don't you read the actualy thread I explained myself in
 rather than read it here out of context. 
 
 http://forums.slimdevices.com/showthread.php?t=79245
 
 I replied to this thread with a LINK to that because someone asked if I
 had posted information about some testing further up in this thread.
So, if I read properly, you assume there are two types of jitter :
peak-to-peak and clock drift jitter.
Then, you come to the conclusion that, as clock drift cannot be
affected by the cable and the peak-to-peak is not affected in the
measures, then the cable makes no difference.

Yes, but : how do you interpret what Nugent says ? :
http://www.positive-feedback.com/Issue43/jitter.htm


-- 
Themis

SBT - North Star dac 192 - Croft 25Pre and Series 7 power - Sonus Faber
Grand Piano Domus

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-06-01 Thread cliveb

mswlogo;551887 Wrote: 
 You points on A and B are correct. But you'd have to have one really F'd
 up setup for those to occur (and have cables significantly change it). I
 have tons of Meridian boxes and never found a digital cable to make any
 difference.
Meridian gear is top-notch stuff, so if it happens to be very immune to
noise on the ground plane and deals with incoming jitter well, that
would be no surprise. Some of the boutique audiophile gear that
people say demonstrate differences in digital cables is probably not so
well engineered.

But to put things in context: I personally have never heard any
significant differences between digital transports or cables. Any
differences that I think I may have detected were most likely imagined,
because they were sighted comparisons.


-- 
cliveb

Transporter - ATC SCM100A

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-31 Thread Mr_Sukebe

mswlogo;550412 Wrote: 
 They are both absolutely 100% bit perfect (TosLink and Coax, Wifi and
 Wired). I've recorded the SPDIF on both and neither will miss a bit.
 Only difference may be jitter. But as dicussed elsewhere a good DAC
 will take care of that.

Interesting, I've never found a DAC that can completely eliminate
jitter and I've tried a few, including a Bel Canto DAC2 (that
supposedly reclocked) and my existing Meridian 568.2 that uses some
clever FIFO.  On both DACs, different quality digital sources sounded
different, implying that neither was fully successful in eliminating
jitter.


-- 
Mr_Sukebe

SB Touch, Meridian 568.2, Bel Canto Evo2i, Impulse Ta'us, Coherent
system, audio-technica and Zanash cables, Stillpoints

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-31 Thread Phil Leigh

Mr_Sukebe;551811 Wrote: 
 Interesting, I've never found a DAC that can completely eliminate jitter
 and I've tried a few, including a Bel Canto DAC2 (that supposedly
 reclocked) and my existing Meridian 568.2 that uses some clever FIFO. 
 On both DACs, different quality digital sources sounded different,
 implying that neither was fully successful in eliminating jitter.

Not necessarily. Just because a DAC sounds different does not
necessarily mean jitter is involved... every DAC has a slightly
different filtering circuit after the DAC and a slightly different
analogue output stage and so will have a signature sound of its own.

DAC's are no different to any other source component - they all have
their own take on what the output should sound like.


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue
Jeans Digital,Kimber Speaker  Chord Interconnect cables
Kitchen Boom, Outdoors: SB Radio

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-31 Thread cliveb

Phil Leigh;551821 Wrote: 
 Not necessarily. Just because a DAC sounds different does not
 necessarily mean jitter is involved... every DAC has a slightly
 different filtering circuit after the DAC and a slightly different
 analogue output stage and so will have a signature sound of its own.
 
 DAC's are no different to any other source component - they all have
 their own take on what the output should sound like.
Phil, I think you've misunderstood what Mr_Sukebe is saying. He is
saying that he hears differences in output *from the same DAC* when
using different SPDIF sources. So he's not comparing one DAC to
another.

That said, I remain unconvinced that jitter is the cause of these
differences. Too many people say that there are only two things that
can possibly distinguish digital sources: the bits they deliver, and
the jitter. Not so - there are two another possible sources of
difference that I can think of:
a). The EMI radiated by the devices which can affect the operation of
other nearby analogue circuitry.
b). Grounding topology which may allow noise to transfer between the
ground planes of devices. On unbalanced devices, the ground plane
becomes part of the signal (in that the actual signal is in fact the
difference between the signal and ground). Therefore if there is any
noise on the ground plane it gets interpreted as signal. (*Perfect*
shunting of the ground plane to earth is of course impossible).


-- 
cliveb

Transporter - ATC SCM100A

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-31 Thread Phil Leigh

cliveb;551849 Wrote: 
 Phil, I think you've misunderstood what Mr_Sukebe is saying. He is
 saying that he hears differences in output *from the same DAC* when
 using different SPDIF sources. So he's not comparing one DAC to
 another.
 
 That said, I remain unconvinced that jitter is the cause of these
 differences. Too many people say that there are only two things that
 can possibly distinguish digital sources: the bits they deliver, and
 the jitter. Not so - there are two another possible sources of
 difference that I can think of:
 a). The EMI radiated by the devices which can affect the operation of
 other nearby analogue circuitry.
 b). Grounding topology which may allow noise to transfer between the
 ground planes of devices. On unbalanced devices, the ground plane
 becomes part of the signal (in that the actual signal is in fact the
 difference between the signal and ground). Therefore if there is any
 noise on the ground plane it gets interpreted as signal. (*Perfect*
 shunting of the ground plane to earth is of course impossible).

erm yes...you are right, I misread it. Sorry Mr Sukube.

I think your item B is of great interest, plus contamination of the
mains from RFI.


I've been playing with my RFI sniffer. Some interesting results so far,
but it's too early to form any definite conclusions.

I'm in the processs of switching to shielded mains cables... (I already
had them on half my equipment).

One thing - the amount of RFI from the mains lead of my (LCD) TV in
standby is worrying...


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue
Jeans Digital,Kimber Speaker  Chord Interconnect cables
Kitchen Boom, Outdoors: SB Radio

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-31 Thread mswlogo

cliveb;551849 Wrote: 
 Phil, I think you've misunderstood what Mr_Sukebe is saying. He is
 saying that he hears differences in output *from the same DAC* when
 using different SPDIF sources. So he's not comparing one DAC to
 another.
 
 That said, I remain unconvinced that jitter is the cause of these
 differences. Too many people say that there are only two things that
 can possibly distinguish digital sources: the bits they deliver, and
 the jitter. Not so - there are two another possible sources of
 difference that I can think of:
 a). The EMI radiated by the devices which can affect the operation of
 other nearby analogue circuitry.
 b). Grounding topology which may allow noise to transfer between the
 ground planes of devices. On unbalanced devices, the ground plane
 becomes part of the signal (in that the actual signal is in fact the
 difference between the signal and ground). Therefore if there is any
 noise on the ground plane it gets interpreted as signal. (*Perfect*
 shunting of the ground plane to earth is of course impossible).

You points on A and B are correct. But you'd have to have one really
F'd up setup for those to occur (and have cables significantly change
it). I have tons of Meridian boxes and never found a digital cable to
make any difference.

I've done similar experiments that I posted and recorded the signal
right at the digital tape output of 861 to assure data was perfect from
rip to processor.


-- 
mswlogo

XP  Cat5  Transporter/DuetController  SPDIF  Meridian G68  DSP6000,
DSP5500HC, DSP5000
XP  Cat5  SB3  SPDIF  Meridian DSP5000
XP  Cat5  DuetReceiver  SPDIF  Meridian G91  DSP5000

'My Transporter Setup'
(http://forums.slimdevices.com/showpost.php?p=350741postcount=45)
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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-30 Thread Phil Leigh

mswlogo;551495 Wrote: 
 I know that, but some don't seem to believe it. SB3 is a perfect SPDIF
 deliverer too (both toslink and SPDIF). CO2 converts perfectly and
 TASCAM records perfectly. All that is left is jitter. And if your DAC
 buffers/reclocks that gets rid of all peak to peak jitter.
 
 So people must have really bad DACs if they can hear differences
 between toslink vs coax and this cable or that.

I know you know that I know you know ... :-)

I wish I could find that thread where Sean attacked a Toslink cable
with various tools to try and make it jitter...


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue
Jeans Digital,Kimber Speaker  Chord Interconnect cables
Kitchen Boom, Outdoors: SB Radio

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-30 Thread Themis

mswlogo;551495 Wrote: 
 So people must have really bad DACs if they can hear differences between
 toslink vs coax and this cable or that.
You are talking about the SPDIF receivers, not the dacs, surely ?


-- 
Themis

SBT - North Star dac 192 - Croft 25Pre and Series 7 power - Sonus Faber
Grand Piano Domus

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-30 Thread mswlogo

Themis;551675 Wrote: 
 You are talking about the SPDIF receivers, not the dacs, surely ?
 
 Please allow me to respectfully disagree to your above assumption. As
 you are not talking about jitter anymore, what are you talking about,
 exactly ? ;)

I'm talking about how robust SPDIF communication is. And if you have a
Good DAC (that buffers/reclocks - many do) it doesn't matter what you
use for an SPDIF cable (TosLink or Coax).


-- 
mswlogo

XP  Cat5  Transporter/DuetController  SPDIF  Meridian G68  DSP6000,
DSP5500HC, DSP5000
XP  Cat5  SB3  SPDIF  Meridian DSP5000
XP  Cat5  DuetReceiver  SPDIF  Meridian G91  DSP5000

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-30 Thread mswlogo

Themis;551675 Wrote: 
 You are talking about the SPDIF receivers, not the dacs, surely ?
 
 Please allow me to respectfully disagree to your above assumption. As
 you are not talking about jitter anymore, what are you talking about,
 exactly ? ;)

Better yet. Why don't you read the actualy thread I explained myself in
rather than read it here out of context. 

http://forums.slimdevices.com/showthread.php?t=79245

I replied to this thread with a LINK to that because someone asked if I
had posted information about some testing further up in this thread.


-- 
mswlogo

XP  Cat5  Transporter/DuetController  SPDIF  Meridian G68  DSP6000,
DSP5500HC, DSP5000
XP  Cat5  SB3  SPDIF  Meridian DSP5000
XP  Cat5  DuetReceiver  SPDIF  Meridian G91  DSP5000

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-29 Thread Phil Leigh

If you are recording and diffing s/pdif you will never see jitter.
Jitter will only manifest post-DAC (assuming decent, working equipment 
- which you do have!). For jitter to manifest pre-DAC it would have to
be so severe as to change the bitstream - which we all know it doesn't
in the SB2/3/TP/Touch devices.


All the evidence available points to the conclusion that the Touch and
TP are pretty much perfect deliverers of s/pdif to a DAC...


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue
Jeans Digital,Kimber Speaker  Chord Interconnect cables
Kitchen Boom, Outdoors: SB Radio

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-29 Thread mswlogo

Phil Leigh;551440 Wrote: 
 If you are recording and diffing s/pdif you will never see jitter.
 Jitter will only manifest post-DAC (assuming decent, working equipment 
 - which you do have!). For jitter to manifest pre-DAC it would have to
 be so severe as to change the bitstream - which we all know it doesn't
 in the SB2/3/TP/Touch devices.
 
 
 All the evidence available points to the conclusion that the Touch and
 TP are pretty much perfect deliverers of s/pdif to a DAC...

I know that, but some don't seem to believe it. SB3 is a perfect SPDIF
deliverer too (both toslink and SPDIF). CO2 converts perfectly and
TASCAM records perfectly. All that is left is jitter. And if your DAC
buffers/reclocks that gets rid of all peak to peak jitter.

So people must have really bad DACs if they can hear differences
between toslink vs coax and this cable or that.


-- 
mswlogo

XP  Cat5  Transporter/DuetController  SPDIF  Meridian G68  DSP6000,
DSP5500HC, DSP5000
XP  Cat5  SB3  SPDIF  Meridian DSP5000
XP  Cat5  DuetReceiver  SPDIF  Meridian G91  DSP5000

'My Transporter Setup'
(http://forums.slimdevices.com/showpost.php?p=350741postcount=45)
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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread michael123

Once you got the Transporter, you shall better use AES3 than S/PDIF, but
note that you need DAC in 5000$ range to beat the Transporter (which is
still, questionable)


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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread Robin Bowes
On 25/05/10 07:35, michael123 wrote:
 
 Once you got the Transporter, you shall better use AES3 than S/PDIF

Not necessarily. See previous posts on this subject (AES/EBU vs. S/PDIF)

R.
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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread bhaagensen

michael123;550335 Wrote: 
 Once you got the Transporter, you shall better use AES3 than S/PDIF, but
 note that you need DAC in 5000$ range to beat the Transporter (which is
 still, questionable)

+1 on Robin's comment. In this specific case I can add that I plan to
use coax over BNC and that the DAC in question, while not in that price
range, has a distinctive sound that is a better match for my taste as
well as the rest of my equipment.


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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread mswlogo

Don't get me wrong I love my Transporter.

But it's had the over voltage problem since I bought it (couple years
now) and it's a simple firmware bug that has not been fixed.

I would not buy one today unless this bug was fixed.

It does not happen often, but would you buy a car that just quits on
you in the middle of highway once a month. Even though it runs fine the
rest of the time and starts right back up. What would your passengers
think.

Absolute sin.

Just buy a touch. It will be supported for a while.

As far as digital differences I doubt you'll hear any difference. I
didn't hear ANY difference going from SqueezeBox 3 to Transporter using
an external DAC.


-- 
mswlogo

XP  Cat5  Transporter/DuetController  SPDIF  Meridian G68  DSP6000,
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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread michael123

I was asked this week for some comments via bugzilla for this specific
bug, there is a hope it will be fixed (for 7.6?)


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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread michael123

bhaagensen;550370 Wrote: 
 +1 on Robin's comment. In this specific case I can add that I plan to
 use coax over BNC and that the DAC in question, while not in that price
 range, has a distinctive sound that is a better match for my taste as
 well as the rest of my equipment.

coax over BNC is BNC in my language :-)
It is a better connection (and different parts inside the Transporter
last time I've seen it). It has transformer and 50 Ohm impedance.


-- 
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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread mswlogo

michael123;550404 Wrote: 
 mswlogo
 
 I was asked this week for some comments via bugzilla for this specific
 bug, there is a hope it will be fixed (for 7.6?)
 
 btw, I did hear the difference between SB3 and Transporter... 
 Flat sound of SB3 was the reason it migrated to the bedroom and I got
 Transporter..

They are both absolutely 100% bit perfect (TosLink and Coax, Wifi and
Wired). I've recorded the SPDIF on both and neither will miss a bit.
Only difference may be jitter. But as dicussed elsewhere a good DAC
will take care of that.


-- 
mswlogo

XP  Cat5  Transporter/DuetController  SPDIF  Meridian G68  DSP6000,
DSP5500HC, DSP5000
XP  Cat5  SB3  SPDIF  Meridian DSP5000
XP  Cat5  DuetReceiver  SPDIF  Meridian G91  DSP5000

'My Transporter Setup'
(http://forums.slimdevices.com/showpost.php?p=350741postcount=45)
'Hitch Hikers Guide to Meridian' (http://www.meridianunplugged.com)

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread michael123

mswlogo;550412 Wrote: 
 They are both absolutely 100% bit perfect (TosLink and Coax, Wifi and
 Wired). I've recorded the SPDIF on both and neither will miss a bit.
 Only difference may be jitter. But as dicussed elsewhere a good DAC
 will take care of that.

With my audiolab 8000AP it did not sound well.. anyway, there are huge
differences in construction of SB3, Touch and Transporter.


-- 
michael123

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread mswlogo

michael123;550424 Wrote: 
 With my audiolab 8000AP it did not sound well.. anyway, there are huge
 differences in construction of SB3, Touch and Transporter.

Yes construction is different. most of Transporter's construction is
for beefing up it's analog section.


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XP  Cat5  SB3  SPDIF  Meridian DSP5000
XP  Cat5  DuetReceiver  SPDIF  Meridian G91  DSP5000

'My Transporter Setup'
(http://forums.slimdevices.com/showpost.php?p=350741postcount=45)
'Hitch Hikers Guide to Meridian' (http://www.meridianunplugged.com)

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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread bhaagensen

mswlogo;550412 Wrote: 
 I've recorded the SPDIF on both and neither will miss a bit. Only
 difference may be jitter.

Ah, interesting. You're then among the few ones who have actually
looked into this in some detail. Is the testing
setup/result/disclaimers/etc detalied somewhere on the
internet-accessible?


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Re: [SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-25 Thread bhaagensen

mswlogo;550437 Wrote: 
 Yes construction is different. most of Transporter's construction is for
 beefing up it's analog section.

But the digital section has certainly not been neglected, at least c.f.
official data concerning jitter.


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[SlimDevices: Audiophiles] Touch vs. Transporter digital output (again)

2010-05-07 Thread bhaagensen

Hi,

firstly, I've read most of the threads on this topic. Secondly, I will
do a listening test myself at some point. But for now...

Two questions. They are rather (over) simplified, strict, and probably
flawed in many other ways. Nonetheless, on the other hand they perhaps
could add something new to the discussion. 

Please answer both questions by indicating a number between 1 and 10.
10 is the top-reference defined by the TP. 1 is some guesstimated
low/average-end level representing the big mass of consumer level
electronics. Other comments are of course also appreciated.  

1. In pure technical terms (i.e. design, quality of components,
implementation, measurements, etc), how does the (output of the)
coaxial digital output of the Touch compare to the Transporter. 

2. Assuming use of good quality cable, connectors, and external DAC.
How does the coaxial output of the Touch compare to the Transporter in
terms of end sound quality. This is obviously much more subjective than
1, and rather than digging deep into each answer, I'd rather get many
answers to gather some mass of opinions.  

Thanks in advance.

Regards Bjørn


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