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Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: What is the best USB S/PDIF converter
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on: February 03, 2011, 11:51:27 pm
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No, Flecko, I didn't say that - it came from the Head-fi/audio-gd crowd when they were trialling their Digital Interface against the Hiface - unfounded assertion, btw. Have a look at the ComputerAudiophile review of the Hiface - impedance comes out at 73ohm. Last we spoke you were buying an RF attenuator to try on your Hiface - didn't happen? Sorry. Mixed up something...and I know now what...! Kingwa has found the bnc connector he was first using in his DI was a 50Ohm, although it was sold as a 75Ohm. He has replaced it by a true 75ohm connector. Yes, but I also saw that rumour spread from that thread i.e that the Hiface doesn't have a 75 ohm BNC connector. It seems head-fi has a tendency for doing that I tried to get the attenuator but I don't have it yet. Shipping from america was to expensive and the german distributor didn't respond to my question about the attenuator. I will go to the local electric shop and order some attenuators there. But at the moment I don't find the time. Meanwhile I replaced my Hiface by a Digital Interface from Audio-GD. The attenuator maybe helps there too. Also I still have the hiface and can test it. I will report as I have done the test.
There are other minicircuit distributors in Europe. Be careful what RF attenuator you use - they are not all the same - check the datasheets. Yes, it works on & helps the Digital Interface too  |
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Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: What is the best USB S/PDIF converter
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on: February 03, 2011, 11:32:53 pm
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BTW, Keng from the Netherlands (a member here, I believe but I don't know his handle) [...] Hi John, I noticed the other day that you somehow seem to be keen on shouting rather outloud people's private names, or all the further nick names they use otherwise; I only want to say : as you know I don't care much about some support for your own enthusiasm and then in the context of my own last post. But please let people decide on their own under what names they make themselves known or otherwise stick to their "handle". No big deal really, but again, people ought to decide that for themselves. Thank you. Am I keen on doing that? Never noticed - can you show me where I've done so before? That the same "Keng" apparently will be one of the few that may express his ideas about the subject from my two posts in this topic, is a complete other matter - and a funny coincidence. I'll leave it up to him how he judges, and whether some, say, 200 euros can be justified against that other much larger amount. Pure coincience I'll say, and in the end we just posted along eachother.
But remember what I said in the first place : to me that 200 or whatever euro *is* justified. Regardless.
Regards,
Peter
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Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: What is the best USB S/PDIF converter
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on: February 03, 2011, 10:57:10 pm
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.......
The hiface has a 50Ohm bnc plug, (Did Jkeny said that? don't know?) and probable a bad impedance control. I guess this is the reason why you get better results from a long cable. The reflections arrive later. The attenuation of a cable is not enough to explain the better sound. But it should improve with an attenuator about 10-20 db, according to Jkeny and also others who affirmed that.
No, Flecko, I didn't say that - it came from the Head-fi/audio-gd crowd when they were trialling their Digital Interface against the Hiface - unfounded assertion, btw. Have a look at the ComputerAudiophile review of the Hiface - impedance comes out at 73ohm. Last we spoke you were buying an RF attenuator to try on your Hiface - didn't happen? Digitalman, here's what I suggest, I offer a money back home trial of the MK2 Hiface, no questions asked, so, if you want to compare it against another device, it's available. BTW, Keng from the Netherlands (a member here, I believe but I don't know his handle), might like to pitch in as he recently acquired a MK2? |
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Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: SPDIF Cable, longer is better! (Interesting articel)
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on: January 19, 2011, 02:14:12 pm
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More analogue like, more solid 3D sound stage, more texture to the bass, easier to listen to louder, no fatigue, etc. All of this and more! BTW, I was thinking of RFI induced by the high SPDIF-signal in the DAC on the analog output being reduced too, but I gues it must me mainly the jitter doing this. Yes there may well be other benefits besides the reduction of reflections - Pat(ar-t) knows all about these devices Will your mods to the hiFace add much on top of this?   About another 90%, no kidding - ask Boleary here or look at the end-user/press reviews - they all consider the attenuators a minor uograde compared to the modified Hiface |
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Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: SPDIF Cable, longer is better! (Interesting articel)
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on: January 19, 2011, 04:12:46 am
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Great GerardA, thanks for reporting back. It really changes the sound, doesn't it? More analogue like, more solid 3D sound stage, more texture to the bass, easier to listen to louder, no fatigue, etc. All the sonic characteristics of lower jitter. For a small investment, it's a great return, no?
BTW, these can be use don other SPDIF cables, not just on the Hiface. 20dB might be too much or not, in this case!
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Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: SPDIF Cable, longer is better! (Interesting articel)
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on: January 08, 2011, 08:21:13 pm
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ar-t, Pat or Jocko,
A nice informative post but can I ask you this as I know you have the expertise?
Is it not the case that the reflection only has consequence when it arrives during the transition point of the DAC which is somewhere in the middle of the rise-time?
What if the length of the cable is made too long & the reflections hits the next pulse's decision point? What would be typical lengths for this to occur?
Why is a shorter cable not also giving the same effect i.e. the reflection will not be coincident on the decision point & will have bounced back & forth enough times before the decision point is reached that it will have died down to insignificance by then?
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Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: Jkenny MK2
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on: December 24, 2010, 09:10:27 pm
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Thanks Brian,
I'm not sure what connectors the NOS1 DAC contains but the MK2 Hiface is NOT A DAC, it's a USB to SPDIF transport & if I'm not treading on Peter's toes here, it may well work wonderfully with the NOS1 DAC. In fact here is an I2S version which could be incorporated into the NOS 1
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