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] Transporter: No more bug fixes in firmware

2010-05-31 Thread Teus de Jong

andyg;54 Wrote: 
 No, the topic should read No more enhancements.  Bugs will continue to
 be fixed when necessary, the issues linked earlier in this topic are
 very minor or were enhancements.
 
 -- 
 andyg
 
Well this remark convinced me and I have bought a Touch as second
player.

Teus


-- 
Teus de Jong

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Re: [SlimDevices: Audiophiles] Transporter: No more bug fixes in firmware

2010-05-31 Thread michael123

Teus de Jong;551855 Wrote: 
 Well this remark convinced me and I have bought a Touch as second
 player.
 
 Teus

Transporter is in a different league...
I would understand if you say I have bought PS Audio PerfectWave
DAC/Transport Combo :-)

Or, I went with Computer/DAC (say, Weiss or MSB) solution...

But Touch?


-- 
michael123

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Re: [SlimDevices: Audiophiles] Transporter: No more bug fixes in firmware

2010-05-31 Thread Phil Leigh

michael123;551870 Wrote: 
 Transporter is in a different league...
 I would understand if you say I have bought PS Audio PerfectWave
 DAC/Transport Combo :-)
 
 Or, I went with Computer/DAC (say, Weiss or MSB) solution...
 
 But Touch?

Michael, the Touch is a very, very good transport. One of the best I've
heard at any price. The quality of its S/PDIF output is superb.


-- 
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] Transporter: No more bug fixes in firmware

2010-05-31 Thread michael123

Phil Leigh;551876 Wrote: 
 Michael, the Touch is a very, very good transport. One of the best I've
 heard at any price. The quality of its S/PDIF output is superb.

yes, but somebody who is into Transporter shall buy it due to its DAC
sonic capabilities.. 

Although Transporter still has some advantages (AES/EBU, BNC, much
better power supply and clock), it is not clear how that will show up
within particular setup, and I agree that in general people shall buy
Touch (if looking for transport)..


-- 
michael123

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Re: [SlimDevices: Audiophiles] Transporter: No more bug fixes in firmware

2010-05-31 Thread garym

michael123;551878 Wrote: 
 yes, but somebody who is into Transporter shall buy it due to its DAC
 sonic capabilities.. 
 
 Although Transporter still has some advantages (AES/EBU, BNC, much
 better power supply and clock), it is not clear how that will show up
 within particular setup, and I agree that in general people shall buy
 Touch (if looking for transport)..

I appreciate the balanced out connections of the transporter.


-- 
garym

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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)
'Hitch Hikers Guide to Meridian' (http://www.meridianunplugged.com)

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