clivem2
pfm Member
It's still full of switched mode supplies downstream from the battery, probably several of them.
Getting the best out of a Rega DAC (or any Dac)?
- Thread starter treb
- Start date
Steven Toy
Accuphase newbie
When Peter Stockwell came in Feb we compared the netbook powered by the mains with it powered by its battery. The latter was worse.
This actually surprised me.
Mikas
pfm Member
I know you're a clock sync addicted, but maybe you should give it a try one day with optical.
Michael
That actually is surprising -- I've never compared the two. I usually use the battery on my MBA solely out of not wanting to lug the power supply around (it's usually fully charged from work).
I do remember a stereophile review of the dacmagic where someone from CA replied to the review and showed how the power supply on the laptop grossly increased jitter. When the battery was used, the jitter levels decreased significantly.
Wait, here, found it: http://www.stereophile.com/content/cambridge-audio-azur-dacmagic-da-converter-manufacturers-comments
I do remember a stereophile review of the dacmagic where someone from CA replied to the review and showed how the power supply on the laptop grossly increased jitter. When the battery was used, the jitter levels decreased significantly.
Wait, here, found it: http://www.stereophile.com/content/cambridge-audio-azur-dacmagic-da-converter-manufacturers-comments
clivem2
pfm Member
Er....impedance matters.
Robert
Tapehead
Impedance must be considered alongside the circuit being driven, not in isolation, and sometimes it matters in a material way and sometimes it doesn't. It certainly isn't going to matter with any normal method of digital transport such as CD drive, soundcard or macbook digital output.
clivem2
pfm Member
I'm not entirely convinced that potentially high-ish impedance batteries would give the same results as a decent mains derived supply. Not all batteries are created equal, not only high impedance but noisy too. Picking the right battery isn't necessarily simple. A computer as a transport has so many noisy supplies you'd expect battery vs mains to be irrelevant, but it sometimes isn't IME.
Yank
Bulbous Also Tapered
And you make this statement from personal experience?
Joe P
Memory Alpha incarnate | mod; Shatner number = 2
Not right at all. no voltage, no sound, high voltage chip gets destroyed. Irrelevant is clearly the wrong word.
Steven Toy
Accuphase newbie
He made it after he got off the phone, received an email or referred to the script he was given.
In some cases all sources of power are probably equally shit.
Steven Toy
Accuphase newbie
Fluctuating voltage, sagging voltage?
Iirc the Adm9s are designed so that the power sags with a load. No wonder they sound so dynamically flat (imho.)
maxflinn
pfm Member
Assuming the netbook was just out-putting digital data, either wired or wirelessly, it would surprise me too, very much.
Steven Toy
Accuphase newbie
What is the physical mechanism or process by which the netbook out-puts digital data?
maxflinn
pfm Member
How was the data being transported from the netbook? Wired or streamed?
Even with an asynchronous USB DAC ?
Yanntoe
pfm Member
Thinking about Maxflinn's contributions, I've been trying to work out the best way to deal with them.
One has to suppress the knee jerk reaction to respond rudely or to argue, as this just provides fuel for further pointless contributions.
So, I think it best to "hook" one's "adult" side and not respond.
And this is my suggestion/challenge.
Please do not respond to Maxflinn, just ignore him - pretend he hasn't posted and just get on with the thread. Otherwise threads end up in a childish war of words, not helpful, not fun, not interesting, just irritating.
Treat it as a challenge ......
Go on you know you can .......
Cheers
Ian
One has to suppress the knee jerk reaction to respond rudely or to argue, as this just provides fuel for further pointless contributions.
So, I think it best to "hook" one's "adult" side and not respond.
And this is my suggestion/challenge.
Please do not respond to Maxflinn, just ignore him - pretend he hasn't posted and just get on with the thread. Otherwise threads end up in a childish war of words, not helpful, not fun, not interesting, just irritating.
Treat it as a challenge ......
Go on you know you can .......
Cheers
Ian
whatsnext
Naimless
Thank you for sharing you opinion. I wish you well in you sticking to what you propose.
Sorry I am ignoring any attempts to create or modify other peoples behaviour a bit gang like isn't it.