K3cT
Headphoneus Supremus
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I stand corrected then, Mr. Sneis.
Audio-gd Digital Interface
- Thread starter reiserFS
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Quote:
Beep-media-player is pretty good too, it´s a spiritual successor to XMMS (aka Winamp clone). Getting bitperfect audio in Linux is easier than in Windows by the way. All modern distributions use the ALSA sound system, and if you are using a player that can listen directly to it, then it will be automatically bitperfect as it won´t go through any mixer. The downside is that you can´t have many audio sources open then, but that is always so with bitperfect playback (ie, the reason why there are mixers in the first place).
Short answer: use XMMS, Beep-Media-Player or any other that has support for direct ALSA playback and you will have bitperfect audio much easier than in Windows
realmassy
Headphoneus Supremus
Has any of you tried the coax input on the DI?
I'd like to use it as 'anti-jitter' interface between the Sonos player and the dac
Can someone try the DI between a cd player and a dac?
I'd like to use it as 'anti-jitter' interface between the Sonos player and the dac
Can someone try the DI between a cd player and a dac?
realmassy: I did, between my cheap, old CD player and the Reference 1 and it certainly made an improvement. I'd bought the CD player when my Audiotrack Prodigy Cube died and I was desperate to be able to use the Ref 1, as the Northstar simply sounded horrid afterwards. However, I had always felt that the music sounded a bit lifeless playing CDs with it. This was one and a half years ago or more before any of this stuff was a big deal. There isn't a huge difference between transports with the Reference 1 as Kingwa said originally, but the difference ends up being a niggling feeling that something isn't right. So I did pull everything out and sit down and test the DI, using USB power (they forgot to send me the PSU) using that CD player. The main difference with the DI in the chain rather than direct from the CD player was instruments sounding less wooden and more real, basically. I need to repeat the experiment once I get the PSU, however. I did also try it with the Cambridge 840c, but that has an excellent DSP with which I can't detect any difference whatever I plug in, even optical direct from my MacBook Pro.
realmassy
Headphoneus Supremus
Thanks Currawong, much appreciated!
And a very good news, considering the Ref.1 comes with DSP and you're still be able to hear differences using the DI.
Can you also confirm you can disable upsampling on DI, so I'll be able to use it with a NOS dac (with 16/44.1 input)?
In that case I'm going to place my order
And a very good news, considering the Ref.1 comes with DSP and you're still be able to hear differences using the DI.
Can you also confirm you can disable upsampling on DI, so I'll be able to use it with a NOS dac (with 16/44.1 input)?
In that case I'm going to place my order
FauDrei
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While we are at it...
Curra, can you draft few words to describe the sound difference between 840c and RE-1?
Curra, can you draft few words to describe the sound difference between 840c and RE-1?
FauDrei
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Massy, in default DI settings upsampling is disabled.
I have a question....
With everything disabled what does the DSP3 chip do???
With everything disabled what does the DSP3 chip do???
FauDrei
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...buffer & reclock I suppose.
...and convert from USB to SPDIF (if you are using USB input).
...and convert from USB to SPDIF (if you are using USB input).
upstateguy
Headphoneus Supremus
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Quote:
That's an interesting idea.
Which A123 LiFePO4 battery would you suggest? If you used a switch to go from battery power to the charging unit, is there any reason why the DI wouldn't automatically revert to USB power when the switch was thrown?
Also, if the power requirement is +5-10V, do you think there would be a sonic advantage to using more power than the USB provides?
USG
FauDrei
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I do not understand your A123 question. Any A123 from trustful source.
DI has "power selector" switch which has two states: USB and DC IN. LiFePO4 "PSU" would be connected to DC IN input. When you would put LiFePO4 "PSU" in charging mode you would also have to flick the power selector switch to USB power, so no automatic reverting. That is - if you do not intend to completely disassemble and redesign PSU stage inside DI.
More power? You mean higher voltage? Well 3x A123 in series equal 9,6V and they can give some serious Amperes when needed. You could pass by even with two A123s (6,4V) which could perhaps even be better because it is closer to KingWa's optimal supply specs of his external PSU which gives 7V and 0,4A.
When going USB, USB gives 5V and KingWa states DI uses 0,3A out of max. possible 0,5A. Using dedicated powered USB socket or dedicated powered USB hub would be wise (no other devices connected to that socket/hub).
When I emailed Kingwa about what type of external power supply I could use, giving him a couple of choices I had in mind he said that 9v 500ma would be good. So I went ahead and ordered a Linear/Regulated 9v 500ma PSU. I can also use the same PSU with my Adum for USB power. Either way according to AGD the power from the USB or external will feed the same power board, class A transistors. Which probably is why I could not really hear a difference when I power the DI through USB or External. Also it must have pretty good galvanic isolation because the Adum really makes little difference with the DI.
Alexdad54
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