MEASUREMENTS: iPhone 4 and 6...

[Archimago]

Hey folks, blog post and measurements on what I believe are the most
important music player on the planet... The iPhones.

Bottom line... I'm not disappointed.

'http://archimago.blogspot.com/2014/10/measurements-apple-iphone-4-iphone-6.html'
(http://archimago.blogspot.ca/2014/10/measurements-apple-iphone-4-iphone-6.html)



Archimago's Musings: (archimago.blogspot.com) A 'more objective'
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[Mnyb]

Nice work as usual .The iPhone 6 seems to crossed the line into hifi .

Wonder where the choice of Minimum phase filters come from ? I'm a bit
sceptical about that in general . but is popular .

I get the 48k limit its a phone ! but it forces transcoding of some
sources . Which begs the question how are those things done on a phone ?

On our LMS servers we can have SoX which is known to perform very well ,
but how to cram such functions into a iPhone 4 or old iPad is it a
hardware chip ?can it be done in CPU ?

Well just fill your phone with stuff it can handle natively .

Also understandable that they might not drive all headphones perfectly ,
but with a decent headphone amp you have a very simple portable setup .

As we live long enough , now my phone outperforms some of my older
computers and some of the hifi i used to own :)

The irony of it is that you can just by reading the ads on stereophile
website any odd day find multi thousand $$$ equipment that performs much
worse .
What the audiophile buys is simply artisan crafted distortion in some
cases. I have no problems with that if it is your fare, its usually the
weird claims that go around the stuff that bothers me , and the prices
for it .



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[Mnyb]

Hmm saw that the crosstalk spec is not ideal -85dB it could be better
,but i guess its typical for such a small device .
Also its probably not audible on music as its far more channel mix in
the recordings themselfs



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sub.
Bedroom/Office: Boom
Kitchen: Touch + powered Fostex PM0.4
Misc use: Radio (with battery)
iPad1 with iPengHD & SqueezePad
(in storage SB3, reciever ,controller )
server HP proliant micro server N36L with ClearOS Linux

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[ralphpnj]

Thanks Archimago for a very interesting read.

For me the big take away is that the playback of digital audio has now
reached a point where even relatively inexpensive hardware is capable of
doing a very good job. And this begs the question of what audible
improvement does one get when using a mega-buck audiophile DAC versus a
low cost (a few hundred dollars) run of the mill DAC. Basically I think
the whole audiophile DAC arena is shaping up to become similar to the
audiophile amplifier versus mass market amplifier in that the audible
differences have become almost irrelevant and are the subject of purely
subjective speculations. In other words, the "all solid state amps sound
the same" argument.

One can sense that this state of affairs has the high end audio press in
a bit of tissy whenever one encounters a review of a low priced (in high
end audio terms) DAC. For the most part these DACs perform exceptionally
well and the reviewers are often left having to split hairs when
comparing the performance of the latest "giant killer" with that some
mega-buck "reference standard" DAC. The high end audio industry would be
better served by just accepting that digital side of digital audio can
be handled quite well with modestly priced equipment and focus their
attention on the analog side of digital audio, the area where some of
the high end beliefs still have some truth to them.



Living Rm: Transporter-SimAudio pre/power amps-Vandersteen 3A Sign. &
sub
Home Theater: Touch-Marantz HTR-Energy Veritas 2.1 & Linn sub
Computer Rm: Touch-Headroom Desktop w/DAC-Aragon amp-Energy Veritas 2.1
& Energy sub
Bedroom: Touch-HR Desktop w/DAC-Audio Refinement amp-Energy Veritas 2.0
Guest Rm: Duet-Sony soundbar
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[probedb]

Post by ralphpnj
For me the big take away is that the playback of digital audio has now
reached a point where even relatively inexpensive hardware is capable of
doing a very good job. And this begs the question of what audible
improvement does one get when using a mega-buck audiophile DAC versus a
low cost (a few hundred dollars) run of the mill DAC. Basically I think
the whole audiophile DAC arena is shaping up to become similar to the
audiophile amplifier versus mass market amplifier in that the audible
differences have become almost irrelevant and are the subject of purely
subjective speculations. In other words, the "all solid state amps sound
the same" argument.

This has been the state for a while really. The DACs themselves have
been more than good enough. A noisy output on a PC doesn't mean it's a
bad DAC.

For example, try and get any 'audiophile' to accept that a FiiO D03K
could possibly be any good because it's so cheap :) They'd rather pay

Post by ralphpnj
£1k on something that does the same job.

'last.fm' (http://www.last.fm/user/probedb)
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[atrocity]

Post by probedb
For example, try and get any 'audiophile' to accept that a FiiO D03K
could possibly be any good because it's so cheap :) They'd rather pay

Post by ralphpnj
£1k on something that does the same job.

I just learned about that a couple weeks ago! Have built a Wandboard
player/LMS for a friend with an old receiver with no digital inputs. As
has been previously mentioned, the analog output of the Wandboard is
nothing great, so I was looking for something better without going
full-blown USB DAC and stumbled across the FiiO D03K. What a bargain!


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[Archimago]

Post by probedb
This has been the state for a while really. The DACs themselves have
been more than good enough. A noisy output on a PC doesn't mean it's a
bad DAC.
For example, try and get any 'audiophile' to accept that a FiiO D03K
could possibly be any good because it's so cheap :) They'd rather pay

Post by ralphpnj
£1k on something that does the same job.

FiiO Do3K?

Sorry... Not only is it too cheap, but it's not heavy enough (too much
enclosure resonance!), is powered off a little switching USB AC adaptor
(too noisy!), internal wiring clearly not of silver and nowhere near
Cardas quality (too much signal loss without nautilus shell/golden ratio
designs!), the internal clock is not "femto" (too jittery!), the DAC
chip is by Cirrus (everyone knows we need an ESS Sabre these days or at
the very least Burr-Browns!), it's not Streamlength asynchronous USB
(definitely too jittery!), opamps suck (common knowledge!), there are no
Ted Denney Synergistic "technology" incorporated into the design like
his quantum fuses (yeah, Ted's a genius!), Ayre didn't tweak the impulse
response (that awful pre-ringing hurts my ears!), it can't handle DSD
(too 'digital' sounding!). I might have missed something...

Oh yeah... The front fascia is clearly not milled aeronautical aluminum.
Ergo, the sound *sucks*.

:rolleyes:



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[probedb]

Post by Archimago
FiiO Do3K?
Sorry... Not only is it too cheap, but it's not heavy enough (too much
enclosure resonance!), is powered off a little switching USB AC adaptor
(too noisy!), internal wiring clearly not of silver and nowhere near
Cardas quality (too much signal loss without nautilus shell/golden ratio
designs!), the internal clock is not "femto" (too jittery!), the DAC
chip is by Cirrus (everyone knows we need an ESS Sabre these days or at
the very least Burr-Browns!), it's not Streamlength asynchronous USB
(definitely too jittery!), opamps suck (common knowledge!), there are no
Ted Denney Synergistic "technology" incorporated into the design like
his quantum fuses (yeah, Ted's a genius!), Ayre didn't tweak the impulse
response (that awful pre-ringing hurts my ears!), it can't handle DSD
(too 'digital' sounding!). I might have missed something...
Oh yeah... The front fascia is clearly not milled aeronautical aluminum.
Ergo, the sound *sucks*.

:D So very true ;)



'last.fm' (http://www.last.fm/user/probedb)
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[ralphpnj]

Post by Archimago
FiiO Do3K?
Sorry... Not only is it too cheap, but it's not heavy enough (too much
enclosure resonance!), is powered off a little switching USB AC adaptor
(too noisy!), internal wiring clearly not of silver and nowhere near
Cardas quality (too much signal loss without nautilus shell/golden ratio
designs!), the internal clock is not "femto" (too jittery!), the DAC
chip is by Cirrus (everyone knows we need an ESS Sabre these days or at
the very least Burr-Browns!), it's not Streamlength asynchronous USB
(definitely too jittery!), opamps suck (common knowledge!), there are no
Ted Denney Synergistic "technology" incorporated into the design like
his quantum fuses (yeah, Ted's a genius!), Ayre didn't tweak the impulse
response (that awful pre-ringing hurts my ears!), it can't handle DSD
(too 'digital' sounding!). I might have missed something...
Oh yeah... The front fascia is clearly not milled aeronautical aluminum.
Ergo, the sound *sucks*.

Archimago,

My attorney will be in touch with you shortly to discuss possible
charges for satire infringement. ;)



Living Rm: Transporter-SimAudio pre/power amps-Vandersteen 3A Sign. &
sub
Home Theater: Touch-Marantz HTR-Energy Veritas 2.1 & Linn sub
Computer Rm: Touch-Headroom Desktop w/DAC-Aragon amp-Energy Veritas 2.1
& Energy sub
Bedroom: Touch-HR Desktop w/DAC-Audio Refinement amp-Energy Veritas 2.0
Guest Rm: Duet-Sony soundbar
Garage: SB3-JVC compact system
Controls: iPeng; SB Controller; Moose & Muso
Server: SBS on dedicated windows 7 computer w/2 Drobos
'Last.fm' (http://www.last.fm/user/jazzfann/)
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[dafiend]

And this begs the question of what audible improvement does one get when
using a mega-buck audiophile DAC versus a low cost (a few hundred
dollars) run of the mill DAC.

None at all. Transparent is transparent.


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[pippin]

The iPhones, even the older ones, have absolutely no issue with
transcoding. They have powerful floating point processors and vector
units for media processing. In the past, they used to run codecs on a
DSP but they no longer do this because they found that it performs
better on the main processor.

You can even do things like FFT and stuff in real time allowing you to
do processing tasks like room correction in real time.

Internally, iOS supports sample rates of up to 192 KHz with 32 bits and
even with a lot of channels (64 IIRC), all of that will be resampled in
the output stage to whatever you need (up to 96 kHz, 24 bits is
supported through USB).

These are really powerful media processing devices, you can't compare
them to NASs, RPis or the like, the latest ones match or even exceed
most desktop PCs in media processing performance (if you exclude GPUs or
more powerful audio cards), especially since their multitasking model is
still far superior to what Windows does.



---
learn more about iPeng, the iPhone and iPad remote for the Squeezebox
and
Logitech UE Smart Radio as well as iPeng Party, the free Party-App,
at penguinlovesmusic.com
*New: iPeng 7, the Universal App for iOS 7*
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[Mnyb]

Post by pippin
The iPhones, even the older ones, have absolutely no issue with
transcoding. They have powerful floating point processors and vector
units for media processing. In the past, they used to run codecs on a
DSP but they no longer do this because they found that it performs
better on the main processor.
You can even do things like FFT and stuff in real time allowing you to
do processing tasks like room correction in real time.
Internally, iOS supports sample rates of up to 192 KHz with 32 bits and
even with a lot of channels (64 IIRC), all of that will be resampled in
the output stage to whatever you need (up to 96 kHz, 24 bits is
supported through USB).
These are really powerful media processing devices, you can't compare
them to NASs, RPis or the like, the latest ones match or even exceed
most desktop PCs in media processing performance (if you exclude GPUs or
more powerful audio cards), especially since their multitasking model is
still far superior to what Windows does. They are much closer to game
consoles in this respect.
The old iPeng versions on old iPhones (3GS) did resample audio actually
twice when playing HD audio. It got resampled to 44.1/16 internally and
then back up to 48/24 for digital outputs. Nobody ever noticed :)

Wow i'm a bit surprised that they put that kind of processing power into
them . Just remembering my iPad 1 .
Vector stuff makes sense as you jiggle your screen back and forth and
call up apps all the time on the display .

Butr other things are so very slow on them and they are crash prone and
run out of memory a lot , and my iPhone 4 is not really fast safari is
like tar on it for example , so i'm really surprised that there is such
a media engine in them ?
It’s clearly over performing compared to the rest of it .

My iPad air is a bit better but it still crashes sometimes , and they
are still not capable of running flash so they cant fully replace
browsing via a PC ...

But i'm happy that they reached the point of diminishing returns with
audio performance :) you simply don’t need better from a phone . Now
they can get them even better in other aspects .

that iPhone 6 sure looks tempting , but i'll wait on to next one that
bending stuff cant have that professionally, I need a phone that a bit
tougher hopefully cheaper sapphire glass is coming to the phone market .



--------------------------------------------------------------------
Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x
MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3
sub.
Bedroom/Office: Boom
Kitchen: Touch + powered Fostex PM0.4
Misc use: Radio (with battery)
iPad1 with iPengHD & SqueezePad
(in storage SB3, reciever ,controller )
server HP proliant micro server N36L with ClearOS Linux

http://people.xiph.org/~xiphmont/demo/neil-young.html
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[Archimago]

Mnyb: Indeed the iPhone 4 is "like tar" compared to the iPhone 6 with
even simple web browsing!

I wonder if there's a conspiracy :confused: to slow down the old phones
so everyone upgrades! I certainly don't recall web browsing being so
slow with my wife's old iPhone until the past year... I wondered if
downgrading iOS to a lower version would help.

-----

Now as for audio. Indeed, I believe we have reached a point where
inexpensive components is certainly plenty good for a walking-around
mobile device. Here in October 2014 there's no way to avoid talking
about the Pono scheduled to be trickling out soon when mentioning
portable devices. I'd be very curious how the Pono performs objectively
with all the hype surrounding it for the hardware "Toblerone".
Young/Ayre has claimed that the bulky shape was needed for sonic quality
with larger components inside...

I see the Pono store is supposed to be updated today so it'll be
interesting also to see what it has on offer. Already with the
announcement of the software releases that will go with the signatured
players, it looks like there's disappointment on that front with a
number of predictable 16/44 bundled albums. (So far nothing tells me
there's anything special here other than yet another store selling stuff
we can already find on HDTracks, etc.)



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[ralphpnj]

Post by Archimago
Mnyb: Indeed the iPhone 4 is "like tar" compared to the iPhone 6 with
even simple web browsing!
I wonder if there's a conspiracy :confused: to slow down the old phones
so everyone upgrades! I certainly don't recall web browsing being so
slow with my wife's old iPhone until the past year... I wondered if
downgrading iOS to a lower version would help.
-----
Now as for audio. Indeed, I believe we have reached a point where
inexpensive components is certainly plenty good for a walking-around
mobile device. Here in October 2014 there's no way to avoid talking
about the Pono scheduled to be trickling out soon when mentioning
portable devices. I'd be very curious how the Pono performs objectively
with all the hype surrounding it for the hardware "Toblerone".
Young/Ayre has claimed that the bulky shape was needed for sonic quality
with larger components inside...
I see the Pono store is supposed to be updated today so it'll be
interesting also to see what it has on offer. Already with the
announcement of the software releases that will go with the signatured
players, it looks like there's disappointment on that front with a
number of predictable 16/44 bundled albums. (So far nothing tells me
there's anything special here other than yet another store selling stuff
we can already find on HDTracks, etc.)

Archimago when I made my statement about the high end audio world
getting all tongue tied when it comes to trying to explain why so many
(if not all) inexpensive DACs (and digital audio players) feature audio
quality that is so good as to be almost indistinguishable from that of
much more expensive DACs (and digital audio players) I was not only
referring to portable devices like the iPhone, iPad and iPod, but to
non-portable devices as well, such as the $300 Musical Fidelity V90-DAC.
One can easily see the verbal gymnastics the writers go through, both
John Atkinson and to a much lesser degree, Sam Tellig, in the full
review, which can found here:

http://www.stereophile.com/content/musical-fidelity-v90-dac-da-processor

It's all quite amusing as they try in vein to justify having to spend
mega-bucks (more than $5,000) to get performance that barely outpaces
that which can be had for mere fraction of the cost. Ah, it must be
those $500 USB cables that put the mega-buck DACs over the top.



Living Rm: Transporter-SimAudio pre/power amps-Vandersteen 3A Sign. &
sub
Home Theater: Touch-Marantz HTR-Energy Veritas 2.1 & Linn sub
Computer Rm: Touch-Headroom Desktop w/DAC-Aragon amp-Energy Veritas 2.1
& Energy sub
Bedroom: Touch-HR Desktop w/DAC-Audio Refinement amp-Energy Veritas 2.0
Guest Rm: Duet-Sony soundbar
Garage: SB3-JVC compact system
Controls: iPeng; SB Controller; Moose & Muso
Server: SBS on dedicated windows 7 computer w/2 Drobos
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[Archimago]

Post by ralphpnj
Archimago when I made my statement about the high end audio world
getting all tongue tied when it comes to trying to explain why so many
(if not all) inexpensive DACs (and digital audio players) feature audio
quality that is so good as to be almost indistinguishable from that of
much more expensive DACs (and digital audio players) I was not only
referring to portable devices like the iPhone, iPad and iPod, but to
non-portable devices as well, such as the $300 Musical Fidelity V90-DAC.
One can easily see the verbal gymnastics the writers go through, both
John Atkinson and to a much lesser degree, Sam Tellig, in the full
http://www.stereophile.com/content/musical-fidelity-v90-dac-da-processor
It's all quite amusing as they try in vein to justify having to spend
mega-bucks (more than $5,000) to get performance that barely outpaces
that which can be had for mere fraction of the cost. Ah, it must be
those $500 USB cables that put the mega-buck DACs over the top.

Thanks for that link. Indeed I see what you mean about getting "tongue
tied". Interesting response and quote from "Scorpio69er" regarding that
review. Of course anyone daring to bring out DBT is prone to get spanked
by those folks. Good for J. Gordon Holt for saying the truth even if he
didn't "practice what he preached".

Well, at least John Atkinson did indeed put the V90-DAC as a Class A
component in the latest "Recommended Components" list October 2014. I'm
still amazed that the Lector Strumenti Audio Digitube S-192 makes it to
that Classe A level, though! Guess they paid their dues... :rolleyes:



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[Mnyb]

Post by Archimago
Thanks for that link. Indeed I see what you mean about getting "tongue
tied". Interesting response and quote from "Scorpio69er" regarding that
review. Of course anyone daring to bring out DBT is prone to get spanked
by those folks. Good for J. Gordon Holt for saying the truth even if he
didn't "practice what he preached".
Well, at least John Atkinson did indeed put the V90-DAC as a Class A
component in the latest "Recommended Components" list October 2014. I'm
still amazed that the 'Lector Strumenti Audio Digitube S-192'
(http://www.stereophile.com/content/lector-strumenti-audio-digitube-s-192-da-converter)
makes it to that Classe A level, though! Guess they paid their dues...

Wonderfull piece of kit that lector strumenti , i think I have several
mp3 players in my junk box that run cirles around this thing :) I think
you actually hit a price point in high end audio where cargo cult
engineering totally takes over and you actually get less performance
than even the simplest bog standard implementation of standard chips
like in a supermarket dvd player gets you...



--------------------------------------------------------------------
Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x
MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3
sub.
Bedroom/Office: Boom
Kitchen: Touch + powered Fostex PM0.4
Misc use: Radio (with battery)
iPad1 with iPengHD & SqueezePad
(in storage SB3, reciever ,controller )
server HP proliant micro server N36L with ClearOS Linux

http://people.xiph.org/~xiphmont/demo/neil-young.html
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[pablolie]

my GF has an iPhone6. maybe we ought to connect it via its headphone
output, because through bluetooth to the NAD 3020 and Totem
Dreamcatchers I set up in her place it sounds... ugh. She is not an
audiophile but used to play piano, so when we listen to Max Richter
Vivaldi Recomposed we both want to immerse ourselves into it... and we
both agreed to switch sources and play it through the SB3->Cambridge
DACmagic->MusicFidelity M1PWR we also set up. Sounded noticeably better,
stage widened, definitely noticeable resolution up top.

On my Samsung S4, i do not car eless if I listen to music (often flac)
through Shure 210 or Shure 535, I can not hear the difference, and the
source is the bottleneck. Because I can tell them apart on my computer
system with an AE D1.



...pablo
Server: Virtual Machine running Ubuntu 12.04 + LMS 7.7.3 on VMware
Player
System: SB Touch --optical->- Benchmark DAC2HGC --AnalysisPlus Oval
Copper XLR->- Creek Destiny Power Amp --AnalysisPlus Black Mesh Oval->-
KEF LS50
Other Rooms: 2x SB Boom; 1x SB Radio; 1x SB Classic-> MusicalFidelity
M1PWR -> Totem DreamCatcher
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[Archimago]

Post by pablolie
my GF has an iPhone6. maybe we ought to connect it via its headphone
output, because through bluetooth to the NAD 3020 and Totem
Dreamcatchers I set up in her place it sounds... ugh. She is not an
audiophile but used to play piano, so when we listen to Max Richter
Vivaldi Recomposed we both want to immerse ourselves into it... and we
both agreed to switch sources and play it through the SB3->Cambridge
DACmagic->MusicFidelity M1PWR we also set up. Sounded noticeably better,
stage widened, definitely noticeable resolution up top.
On my Samsung S4, i do not car eless if I listen to music (often flac)
through Shure 210 or Shure 535, I can not hear the difference, and the
source is the bottleneck. Because I can tell them apart on my computer
system with an AE D1.

Bluetooth music. Ugg. Is this with A2DP protocol? I think I might have
tried streaming music once but that was years ago when it first came out
and I was curious. I'll have to give it a listen!



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[Mnyb]

Post by Archimago
Mnyb: Indeed the iPhone 4 is "like tar" compared to the iPhone 6 with
even simple web browsing!
I wonder if there's a conspiracy :confused: :rolleyes: to slow down the
old phones so everyone upgrades! I certainly don't recall web browsing
being so slow with my wife's old iPhone until the past year... I
wondered if downgrading iOS to a lower version would help.
-----
Now as for audio. Indeed, I believe we have reached a point where
inexpensive components is certainly plenty good for a walking-around
mobile device. Here in October 2014 there's no way to avoid talking
about the Pono scheduled to be trickling out soon when mentioning
portable devices. I'd be very curious how the Pono performs objectively
with all the hype surrounding it for the hardware "Toblerone".
Young/Ayre has claimed that the bulky shape was needed for sonic quality
with larger components inside...
I see the Pono store is supposed to be updated today so it'll be
interesting also to see what it has on offer. Already with the
announcement of the software releases that will go with the signatured
players, it looks like there's disappointment on that front with a
number of predictable 16/44 bundled albums. (So far nothing tells me
there's anything special here other than yet another store selling stuff
we can already find on HDTracks, etc.)

Well about that I sadly think you are right , just another store where
labels can upload whatever , my hope would have been a quality store
where actual humans curated the stuff and checked out for the best
master/version of a work. I would gladly pay HD track prices for that
and take whatever format associated with it 16/44.1 to 24/192 maybe
there would be a market necessity to package it as hirez for the
audiophiles to buy ,there are so many deeply ingrained believes about
formats but if the actual good stuff comes with it it get it .



--------------------------------------------------------------------
Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x
MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3
sub.
Bedroom/Office: Boom
Kitchen: Touch + powered Fostex PM0.4
Misc use: Radio (with battery)
iPad1 with iPengHD & SqueezePad
(in storage SB3, reciever ,controller )
server HP proliant micro server N36L with ClearOS Linux

http://people.xiph.org/~xiphmont/demo/neil-young.html
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[pippin]

Oh, and this is not "relatively inexpensive hardware", too. You can
easily buy two desktop PCs or a pretty powerful notebook for the price
of an iPhone 6



---
learn more about iPeng, the iPhone and iPad remote for the Squeezebox
and
Logitech UE Smart Radio as well as iPeng Party, the free Party-App,
at penguinlovesmusic.com
*New: iPeng 7, the Universal App for iOS 7*
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[ralphpnj]

Post by pippin
Oh, and this is not "relatively inexpensive hardware", too. You can
easily buy two desktop PCs or a pretty powerful notebook for the price
of an iPhone 6

Perhaps I should have clarified exactly what I meant by "relatively
inexpensive hardware" which is the DAC portion of the iPhone and not
overall cost of the entire device. So in that sense the DAC within the
iPhone is a piece of "relatively inexpensive hardware".



Living Rm: Transporter-SimAudio pre/power amps-Vandersteen 3A Sign. &
sub
Home Theater: Touch-Marantz HTR-Energy Veritas 2.1 & Linn sub
Computer Rm: Touch-Headroom Desktop w/DAC-Aragon amp-Energy Veritas 2.1
& Energy sub
Bedroom: Touch-HR Desktop w/DAC-Audio Refinement amp-Energy Veritas 2.0
Guest Rm: Duet-Sony soundbar
Garage: SB3-JVC compact system
Controls: iPeng; SB Controller; Moose & Muso
Server: SBS on dedicated windows 7 computer w/2 Drobos
'Last.fm' (http://www.last.fm/user/jazzfann/)
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[pippin]

Oh, ok, yes, of course. I got a bit carried away by answering Mnyb's
post on processing power.



---
learn more about iPeng, the iPhone and iPad remote for the Squeezebox
and
Logitech UE Smart Radio as well as iPeng Party, the free Party-App,
at penguinlovesmusic.com
*New: iPeng 7, the Universal App for iOS 7*
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[pippin]

The processor even on iPad 1 and iPhone 4 is pretty powerful. iPad 1
severely lacks memory and especially graphics memory which means it
moves a lot of memory between regular and graphics memory which hurts
performance.

And iOS 7 has all these effects which eat a lot of GPU performance and
it has a changed scheduling which is not good on the single-core
devices.

On the Air it's actually all the live blur effects that eat up all the
performance. Given that is has a higher resolution than an HD TV these
take an incredible amount of power. Turn them off in the accessibility
settings and it will become lightning fast.
Most ordinary notebooks would not have enough graphics power to do the
same kind of effects. Plus, of course, you don't need 60hz frame rates
for scrolling on a computer.



---
learn more about iPeng, the iPhone and iPad remote for the Squeezebox
and
Logitech UE Smart Radio as well as iPeng Party, the free Party-App,
at penguinlovesmusic.com
*New: iPeng 7, the Universal App for iOS 7*
------------------------------------------------------------------------
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View this thread: http://forums.slimdevices.com/showthread.php?t=102270