Re: [SlimDevices: Audiophiles] Upgrade from touch+cambridge 840c

2011-04-19 Thread Helloharry

I came across a number direct online sellng dacs, brands like
wyred4sound, neko (daverz using), twisted pair (soundcheck using), any
other users can comment on the qualities of these dacs compare to dac
part of 840c or stello cpa500? Especially of course to use with a moded
touch. Cheers.


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Re: [SlimDevices: Audiophiles] Upgrade from touch+cambridge 840c

2011-04-19 Thread Helloharry

Garym, thanks for the input, you are exactly right, worst is you spend
the $$$ and there is no improvement is sonic quality.

Daverz, yes, tube rolling can improve/change the sound and i have in
stock nos mullards el34, kt66 n 77 goldlion, 350b reissue by valve art
and russian 6p3e which is on my amp right now, these are all nice
sounding tubes and i switch them once awhile to adapt to my mood and
preference that time. ;)

Have anyone heard the korean brand stello? Their cda500 cdp has got
some raved review in hong kong, and i am going to seoul soon and i can
pick one up at almost half of the hk retail price. They also have a top
end model call eximus which cost around 4000usd (cda500 is 2110usd).


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Re: [SlimDevices: Audiophiles] Hearing the differences

2011-04-19 Thread mlsstl

adamdea;626496 Wrote: 
> It made me wonder whether everyone had learnt and taken to heart the
> maxim "never get into a pissing contest with a skunk." Disappointingly,
> not.

The phrase I've heard is "Never argue with an idiot. They'll drag you
down to their level and then beat you with experience."


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Re: [SlimDevices: Audiophiles] S/PDIF cables should be (a) - >=1.5m or (b) as short as possible?

2011-04-19 Thread JohnSwenson

Actually Steve says it should either be greater than 1.5M or very short
(less than a foot).

ALL the TOSLINK interfaces used by everybody are all made by Toshiba
(hence the TOS part) they only offer a fairly limited range of devices.
The receivers come in low bandwidth and really low bandwidth. They used
to make a much higher bandwidth receiver, but they stopped making them
a few years ago. The transmitters generally have greater bandwidth than
the receivers. 

There actually is a significant difference between glass and plastic.
Plastic is almost always a single fiber which has a much greater
diameter than the wavelength of light used. It behaves like a "light
pipe", light "rays" bounce off the walls with the signal zig-zagging
down the length. On a longer cable you can easily get a significant
differfence in path length between rays that enter the fiber at
different angles. 

A glass one is usually a bundle of very thin glass fibers, the light
doesn't zig-zagg in this arrangement. Rays entering the bundle at
different angles hit different fibers, all of which have a very similar
"flight time". 

With short lengths this difference is probably not much of an issue but
for longer connections it could easily be significant. 

John S.


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Re: [SlimDevices: Audiophiles] very useful Foobar plugin....

2011-04-19 Thread adamdea

In  case anyone is interested I have now found 2 albums with overall
score of 17 and proper (non recitative) individual 19s- no real
surprises on the grammy best engineered record award winner, but well
done the CSO in house label. But surprisingly the classic demonstration
album of 1812 overture with the real cannons comes out with a lousy 10
or so. And the stereophile test cd demo tracks- tsk tsk.


+---+
|Filename: dr analysis.txt  |
|Download: http://forums.slimdevices.com/attachment.php?attachmentid=11732|
+---+

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Re: [SlimDevices: Audiophiles] Hearing the differences

2011-04-19 Thread adamdea

magiccarpetride;626450 Wrote: 
> Interestingly, in the four pages of discussion that ensued, no one
> attempted to answer, or at least tackle my original question. Makes me
> wonder...
> 
It made me wonder whether everyone had learnt and taken to heart the
maxim "never get into a pissing contest with a skunk." Disappointingly,
not.


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Re: [SlimDevices: Audiophiles] Hearing the differences

2011-04-19 Thread andynormancx

magiccarpetride;626450 Wrote: 
> 
> So let's hear it from the Audiophile Assholes.

You're such a nice chap aren't you.


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Re: [SlimDevices: Audiophiles] Hearing the differences

2011-04-19 Thread Phil Leigh

magiccarpetride;626450 Wrote: 
> Interestingly, in the four pages of discussion that ensued, no one
> attempted to answer, or at least tackle my original question. Makes me
> wonder...
> 
> So let's hear it from the Audiophile Assholes. Come on, don't be shy,
> we all know who you are...

To answer your question, if you hear a difference it means either:

1) There is a difference, caused by the equipment and you heard it
or
2) There was in fact no difference but your brain convinced you that
there was.


-- 
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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) - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103
- full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5),
Pekin Tuner, Townsend Supertweeters, Blue Jeans Belden Digital,Kimber
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Re: [SlimDevices: Audiophiles] Hearing the differences

2011-04-19 Thread Phil Leigh

magiccarpetride;626452 Wrote: 
> I've never used the results of Phil's measurements to declare anything.
> I personally don't give a rat's behind about measurements.

Well you really should because measurements are the basis of
engineering, engineering built the equipment and that's what we are ALL
listening to (like it or not).

:-)


-- 
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) - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103
- full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5),
Pekin Tuner, Townsend Supertweeters, Blue Jeans Belden Digital,Kimber
8TC Speaker & Chord Signature Plus Interconnect cables
Stax4070+SRM7/II phones
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.

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Re: [SlimDevices: Audiophiles] Hearing the differences

2011-04-19 Thread magiccarpetride

firedog;625774 Wrote: 
> I fall somewhere in the middle.

I think we all fall somewhere in the middle.


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Re: [SlimDevices: Audiophiles] Hearing the differences

2011-04-19 Thread magiccarpetride

garym;625621 Wrote: 
> And then Phil finds very small measurement differences under very
> limited circumstances, and some use this to declare soundcheck's mods
> to be a gift from the audio gods. 

I've never used the results of Phil's measurements to declare anything.
I personally don't give a rat's behind about measurements.


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Re: [SlimDevices: Audiophiles] Hearing the differences

2011-04-19 Thread magiccarpetride

magiccarpetride;625616 Wrote: 
> My question: if you can hear a difference, does it, according to the
> First Audiophile Asshole Law, always mean that something about that
> component is broken?

Interestingly, in the four pages of discussion that ensued, no one
attempted to answer, or at least tackle my original question. Makes me
wonder...

So let's hear it from the Audiophile Assholes. Come on, don't be shy,
we all know who you are...


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Re: [SlimDevices: Audiophiles] Better resampling for SB Classic and Touch (probably all)

2011-04-19 Thread Wombat

soundcheck;626366 Wrote: 
> It's not about believe. That we do in church. ;) If you want to bust
> myths - prove it.
> 
> Believing a '\"short-legged,muscular quadruped\"'
> (http://en.wikipedia.org/wiki/Wombat) is a different story. :D

I already pointed to a place where the issue how sox upsamples was
discussed lately. 
btw. funny how it comes from your side to ask someone for prove :) 

End of the upsampling debate for me, laters!


-- 
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Re: [SlimDevices: Audiophiles] Rega DAC - Has anyone auditioned one yet?

2011-04-19 Thread HumanMedia

My findings mirror yours exactly. Belden cord with adapter brought a
good improvement. Sound opens up a liitle more after 5 weeks or so. I
found that putting a new iec connector on the power cable and floating
the shield at the DAC end of the cord also made the sound more
relaxed.

Now, I don't want to derail the thread with this tweak and the jury is
still out until I remove the tweak and see if the sound changes, but it
involves putting about half a pound of piezoelectric pink quartz rough
in small bags on and around the AC adapter plug and between the
adapter/cord and the RCA interconnects. I also covered the top of my
Squeezebox linear power supply. It seems to have smoothed the high
frequencies and brought the midrange and bass forward with a nice
warmth. Maybe more of an effect than the power cord alone and
complementary with the power cord effect.

If you want to discuss or discredit or learn more about this there are
many threads on this tweak over at audioasylum.com, don't do it here.
But for those with an open mind about this tweak, it seems to work well
with the Rega DAC.


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Re: [SlimDevices: Audiophiles] very useful Foobar plugin....

2011-04-19 Thread adamdea

Phil Leigh;626345 Wrote: 
> The DR factor reported by the plugin has been engineered by various
> experts, including Bob Katz...
Thanks for the link- it is very interesting.
I have noticed a couple of anomalies though- after testign a dozen or
so albums it occurs to me that the album/song mode is potentially
unhelpful. if the peak value on the tracks differs by much it uses song
mode which takes the DR value by averaging the individual songs whereas
if they are roughly the same it treats the whole album as one track. I
can see the logic for compilations bt I think it may be a little unfair
on long individual works with lots of tracks because they are often
chopped up into sections which correspond with "quiet bits" and "load
bits". I therefore suspect that the DR is underestimated. 
That said I notice that for the recitative passages in opera seem to
get remarkably high scores. The most "dynamic" track i have identified
so far gets a score of 19 but is a rather unremarkable bit of
recitative from the 1959 Giulini Don Giovanni. Similar tracks get 18. I
think this is probably just because there are a lot of silences which
make the average low, hence the peaks seem remarkable.
However FWIW the only 2 proper 18s i have found are 
a. the first movement of Verdi's requiem (24 bit Society of Sound
LSO/Davis)
b.  Meeresstille und glückliche Fahrt (Calm Sea and Prosperous
Voyage), cantata for chorus & orchestra, Op. 112: Meeresstille.
Sostenuto from a Chandos CD of Beethoven's mass in C.
The highest DR I have found from a whole album was 15. Most classical
albums seem to be 13-14

Is there any way of getting this plugin to record the result next to
every track as meta data?
Is there any way of overriding the Song/album mode. Having run through
a couple of calculation on spreadsheet I can see that for some works
this would make a big difference.


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Re: [SlimDevices: Audiophiles] Better resampling for SB Classic and Touch (probably all)

2011-04-19 Thread Phil Leigh

michael123;626375 Wrote: 
> if Weiss DAC202 uses same algorithm, then I could not match it using
> Sox.
> Weiss always sounded fuller, wider yet detailed..

yes but you are listening to the DAC, not just the algorithm...


-- 
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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) - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103
- full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5),
Pekin Tuner, Townsend Supertweeters, Blue Jeans Belden Digital,Kimber
8TC Speaker & Chord Signature Plus Interconnect cables
Stax4070+SRM7/II phones
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.

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Re: [SlimDevices: Audiophiles] Rega DAC - Has anyone auditioned one yet?

2011-04-19 Thread Dura

I've got the rega DAC for 6 weeks now.
a few observations:
- exchanging the stock powercord for a Belden powercord (€30) with
adapter was remarkably beneficial. usually i do not find big
differences when changing the powercords, but the DAC and the Apollo I
had before are exceptions. Perhaps the stockcord is unshielded?
- in my system after a month it really seems to open up some more.
Again remarkable, I usually find components reach their best within a
week.  
- I used to prefer filter 5, then 2. But after changing the powercord
and the opening up I find filter 1 the most expressive.

I love this DAC; since I went squeezebox 2.5 years ago I sold my Apollo
and have missed it ever since. Since then I had in my system the Meier
Stagedac, the MHDT Havana, the Audio GD Ref 5 DSP and the Touch's
analogue outs ; all had their strenghts and weaknesses, but the rega
DAC beats them all with its seemingly effordless natural sounding
musicality.  
Like a friend of mine who isn't into audio said: the others all sounded
square and flat, this one sounds round and deep.


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Re: [SlimDevices: Audiophiles] Better resampling for SB Classic and Touch (probably all)

2011-04-19 Thread michael123

Phil Leigh;623322 Wrote: 
> The differences between SOX (VHQ) and Weiss are clearly measurable but
> inaudible in practice and there is NO consensus on which is even
> theroretically better.
> 
> Weiss can handle DSD and that is why it is used in pro circles.

if Weiss DAC202 uses same algorithm, then I could not match it using
Sox.
Weiss always sounded fuller, wider yet detailed..


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Re: [SlimDevices: Audiophiles] Better resampling for SB Classic and Touch (probably all)

2011-04-19 Thread Phil Leigh

soundcheck;626365 Wrote: 
> One more:
> 
> When testing different SRCs and options  I think everybody should
> exactly know what the DAC is doing in that area. 
> Many of the DACs around do some kind of resampling. Some do it with
> multiples
> of the original others not. I'm wondering if it wouldn't be useless to
> do
> resampling to 88,2 or 96 on SBS if the DACs SRC does it again to even
> higher rates.
> 
> Beside that - at least that's my experience - higher load  on the SB
> environment due to HiRes data has it's own effects.
> 
> After all, all those differences should be rather subtle. 
> I guess it's not gonna be that that easy to nail it down. IMO too 
> many parameters in the game.
> 
> I'll give a try. ;)

some things to think about:
1) some dacs internally upsample to 384 or 768 using ASRC chips - for
these it may make little difference to upsample before the Touch,
but...

2) some people believe that driving the s/pdif link
(transmitter+cable+receiver) at 96kHz is a good idea.


-- 
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) - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103
- full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5),
Pekin Tuner, Townsend Supertweeters, Blue Jeans Belden Digital,Kimber
8TC Speaker & Chord Signature Plus Interconnect cables
Stax4070+SRM7/II phones
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.

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Re: [SlimDevices: Audiophiles] Better resampling for SB Classic and Touch (probably all)

2011-04-19 Thread soundcheck

Phil Leigh;626364 Wrote: 
> 
> 
> If you don't believe me (or Wombat) you should just listen (of course,
> you should do that anyway!)

It's not about believe. That we do in church. ;) If you want to bust
myths - prove it.

Believing a '\"short-legged,muscular quadruped\"'
(http://en.wikipedia.org/wiki/Wombat) is a different story. :D


-- 
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Re: [SlimDevices: Audiophiles] Better resampling for SB Classic and Touch (probably all)

2011-04-19 Thread soundcheck

One more:

When testing different SRCs and options  I think everybody should
exactly know what the DAC is doing in that area. 
Many of the DACs around do some kind of resampling. Some do it with
multiples
of the original others not. I'm wondering if it wouldn't be useless to
do
resampling to 88,2 or 96 on SBS if the DACs SRC does it again to even
higher rates.

Beside that - at least that's my experience - higher load  on the SB
environment due to HiRes data has it's own effects.

After all, all those differences should be rather subtle. 
I guess it's not gonna be that that easy to nail it down. IMO too 
many parameters in the game.

I'll give a try. ;)


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(http://soundcheck-audio.blogspot.com/2011/01/soundchecks-squeezebox-touch-toolbox-20.html)
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Re: [SlimDevices: Audiophiles] Better resampling for SB Classic and Touch (probably all)

2011-04-19 Thread Phil Leigh

soundcheck;626354 Wrote: 
> It's not that I want to retain 16 bit. If it is possible to set the 
> the sox output stream to 24bit I'm gonna do that.
> 
> Dither I wouldn't use if 24 bit output  works. The guy who started 
> the thread had no bit-depth change in the commandline btw. 
> That's why I brought the issue up.
> 
> That the Touch transforms anything to 24bit later on is a different
> subject.
> 
> What about "there is no truth...". Anything out there proving your
> statement.
> Or do I have to do some listening tests.
> 
> Cheers

The "multiples" issue is an old urban myth.

When upsampling first became popular, it was done in basic hardware and
only done in multiples, using simple doubling of samples.

Later, advanced DSP and ASRC chips were used and proper algorithms were
developed. These convert anything to anything and do so very accurately
- like SOX (but embedded in hardware).

However, for some reason I can't explain, many people still cling to
the "multiples are good" myth.

If you don't believe me (or Wombat) you should just listen (of course,
you should do that anyway!)


-- 
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) - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103
- full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5),
Pekin Tuner, Townsend Supertweeters, Blue Jeans Belden Digital,Kimber
8TC Speaker & Chord Signature Plus Interconnect cables
Stax4070+SRM7/II phones
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.

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Re: [SlimDevices: Audiophiles] Better resampling for SB Classic and Touch (probably all)

2011-04-19 Thread soundcheck

One more. 

Just figured that beside linear and minphase there's an intermediate (
potentially best of two worlds) option.

Perhaps it's worth a try.


-- 
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::: ' Touch Toolbox 2.0'
(http://soundcheck-audio.blogspot.com/2011/01/soundchecks-squeezebox-touch-toolbox-20.html)
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Re: [SlimDevices: Audiophiles] Better resampling for SB Classic and Touch (probably all)

2011-04-19 Thread soundcheck

Phil Leigh;626344 Wrote: 
> If you are upsampling to 88.2 or 96 you should use a linear phase filter
> IME.
> 
> You want SOX to retain the original bit-depth, so if 16 went in you
> want 16 out and if 24 went in, you want 24 out. The Touch itself will
> change everything that is 16 to 24 anyway.
> 
> You should not add any dither when upsampling.
> 
> With SOX, upsampling from 44.1 to 96 is just as accurate as upsampling
> to 88.2 - there is no truth in the "multiples are better" approach.
> 
> to avoid clipping use the sox volume command. I have found that v0.965
> is very effective on the majority of material.

It's not that I want to retain 16 bit. If it is possible to set the 
the sox output stream to 24bit I'm gonna do that.

Dither I wouldn't use if 24 bit output  works. The guy who started 
the thread had no bit-depth change in the commandline btw. 
That's why I brought the issue up.

That the Touch transforms anything to 24bit later on is a different
subject.

What about "there is no truth...". Anything out there proving your
statement.
Or do I have to do some listening tests.

Cheers


-- 
soundcheck

::: ' Touch Toolbox 2.0'
(http://soundcheck-audio.blogspot.com/2011/01/soundchecks-squeezebox-touch-toolbox-20.html)
:::  by soundcheck

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Re: [SlimDevices: Audiophiles] very useful Foobar plugin....

2011-04-19 Thread Phil Leigh

The DR factor reported by the plugin has been engineered by various
experts, including Bob Katz...


-- 
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) - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103
- full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5),
Pekin Tuner, Townsend Supertweeters, Blue Jeans Belden Digital,Kimber
8TC Speaker & Chord Signature Plus Interconnect cables
Stax4070+SRM7/II phones
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.

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View this thread: http://forums.slimdevices.com/showthread.php?t=87106

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Re: [SlimDevices: Audiophiles] Better resampling for SB Classic and Touch (probably all)

2011-04-19 Thread Phil Leigh

If you are upsampling to 88.2 or 96 you should use a linear phase filter
IME.

You want SOX to retain the original bit-depth, so if 16 went in you
want 16 out and if 24 went in, you want 24 out. The Touch itself will
change everything that is 16 to 24 anyway.

You should not add any dither when upsampling.

With SOX, upsampling from 44.1 to 96 is just as accurate as upsampling
to 88.2 - there is no truth in the "multiples are better" approach.

to avoid clipping use the sox volume command. I have found that v0.965
is very effective on the majority of material.


-- 
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) - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103
- full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5),
Pekin Tuner, Townsend Supertweeters, Blue Jeans Belden Digital,Kimber
8TC Speaker & Chord Signature Plus Interconnect cables
Stax4070+SRM7/II phones
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.

Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85
View this thread: http://forums.slimdevices.com/showthread.php?t=84462

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