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Apr 12, 2015 at 9:20 AM Post #11,851 of 14,089
I wonder if that Alex know about cables at all... USB cable is a twisted pair, but S/PDIF cable must be 75 Ohm coaxial cable, like is used to feed TV signal from antenna. I use 3 meters coaxial extension (RCA male/female) with the short cable provided by iBasso with Onkyo PR-SC5509, and have no problems.

I answered in your thread with information on how to make a very good cable for under $10.


Thanks for the thoughtful reply, I thought all you did was write great software.
 
What DAC did you supply? Maybe there is a problem with the Sabre. Also, I doubt if you tried your setup in my office, that's where the dropouts were occurring.
 
I wish I had talked to you first, I spent $250. Better than spending $700 on an AK100 (with optical out).
 
Apr 12, 2015 at 10:34 AM Post #11,852 of 14,089
  What DAC did you supply?

I already said: Onkyo pre-pro. I also used it with my old Denon AVD-2020, with several different sources.
 
Quote:
I wish I had talked to you first, I spent $250. Better than spending $700 on an AK100 (with optical out).

WOW! Digital cables must not be that expensive: they just need to be of good quality. That RG-6 I mentioned in the other thread, with F connectors, is able to feed very low level and very high frequency TV signal (both analog and DVB) for tens meters without a problem. Same with Ethernet cables: tens meters without data loss for cheap! Similar things with USB and HDMI, but the difference is with signal level required, that limits to 15 meters "only" without an amplifier. All those expensive digital cables are intended only to milk customers.
 
With analog cables things are a bit different, but if you look on prices for Canare microphone and balanced cables and Neutrik connectors used by audio professionals, that transfer audio signal for tens meters, you'll see the level of the price rationality.
 
Apr 12, 2015 at 11:13 AM Post #11,853 of 14,089
  With analog cables things are a bit different, but if you look on prices for Canare microphone and balanced cables and Neutrik connectors used by audio professionals, that transfer audio signal for tens meters, you'll see the level of the price rationality.

Sorry I missed the Onkyo.
 
I think you may be arguing a different point here, that anyone who spends a lot of money on cables must be crazy, and I can't disagree with that. One of the reasons we bought our DX90 is because it's such a great value, and that indicates what type of person we are. But I and many others have spent a lot of money on cables and found them to be an incremental, but not economical, improvement. It's just that this is probably the wrong thread for me to offer cost-no-object solutions.
 
That's why I started my thread somewhere else.
 
Apr 14, 2015 at 1:55 PM Post #11,854 of 14,089
  WOW! Digital cables must not be that expensive: they just need to be of good quality. That RG-6 I mentioned in the other thread, with F connectors, is able to feed very low level and very high frequency TV signal (both analog and DVB) for tens meters without a problem. Same with Ethernet cables: tens meters without data loss for cheap! Similar things with USB and HDMI, but the difference is with signal level required, that limits to 15 meters "only" without an amplifier. All those expensive digital cables are intended only to milk customers.
 
With analog cables things are a bit different, but if you look on prices for Canare microphone and balanced cables and Neutrik connectors used by audio professionals, that transfer audio signal for tens meters, you'll see the level of the price rationality.


I do find it interesting that some recording companies will use high end recording systems, amps, and expensive wires, to get the most out of the event. There must be some reason for it, to use cables that purport to transfer the signal as unscathed as possible. 
 
Apr 14, 2015 at 3:01 PM Post #11,855 of 14,089
I have spent a lot of time in various studios and none of them used exotic cables, just bog standard stuff. They'd rather spend money on better mics
 
Apr 14, 2015 at 6:25 PM Post #11,856 of 14,089
I have spent a lot of time in various studios and none of them used exotic cables, just bog standard stuff. They'd rather spend money on better mics


I was thinking of Chesky, who I don't admire a great deal and a couple of others. 
 
Apr 14, 2015 at 7:27 PM Post #11,857 of 14,089
Hi guys, I'm interested in buying a DX90 but I have two questions and I'm wondering if any of you can answer them...
 
Does the DX90 have atrue line out output? (Fixed output, bypassing the amplifier section)
Does the DX90 can be use as usb dac connected to a computer?
 
Thanks in advance.
 
Apr 14, 2015 at 7:54 PM Post #11,858 of 14,089
Hi guys, I'm interested in buying a DX90 but I have two questions and I'm wondering if any of you can answer them...

Does the DX90 have atrue line out output? (Fixed output, bypassing the amplifier section)

Does the DX90 can be use as usb dac connected to a computer?

Thanks in advance.


It has got a true Line Out bypassing the amp section but it is variable instead of being fixed. iBasso did it on purpose, I remember there was a discussion about that many months ago. I guess it is variable because the DX90's volume is being adjusted in the DAC, not the amp section, therefore they might just have taken the signal path from the DAC and lead it directly to the LO-jack (therefore a fixed LO wouldn't even be possible if my theory was true). Just set the volume to the maximum ammount if you are using the LO, as it would be the same as if it would have been a fixed LO (though you shouldn't forget to reduce the volume if you want to use headphones straight from the DX90).

Yes, you can use it as a USB DAC on conputers running Windows as OS if you install the drivers provided on iBasso's website. The only disadvantage is that there will be a time delay so I wouldn't suggest using it with video playback or other purposes where you need the audio signal right on time.
 
Apr 14, 2015 at 8:06 PM Post #11,859 of 14,089
It has got a true Line Out bypassing the amp section but it is variable instead of being fixed. iBasso did it on purpose, I remember there was a discussion about that many months ago. I guess it is variable because the DX90's volume is being adjusted in the DAC, not the amp section, therefore they might just have taken the signal path from the DAC and lead it directly to the LO-jack (therefore a fixed LO wouldn't even be possible if my theory was true). Just set the volume to the maximum ammount if you are using the LO, as it would be the same as if it would have been a fixed LO (though you shouldn't forget to reduce the volume if you want to use headphones straight from the DX90).

Yes, you can use it as a USB DAC on conputers running Windows as OS if you install the drivers provided on iBasso's website. The only disadvantage is that there will be a time delay so I wouldn't suggest using it with video playback or other purposes where you need the audio signal right on time.

THANK YOU for you reply :)
I don't like the idea of a variable LO, as you said I can have a loud incident if I forget to turn the volume down when I plug my HPs. I'm interested in the LO output of DX90 and X5 to pair with my ALO RX Mk3 B+. 
 
Apr 15, 2015 at 12:24 AM Post #11,860 of 14,089
  THANK YOU for you reply :)
I don't like the idea of a variable LO, as you said I can have a loud incident if I forget to turn the volume down when I plug my HPs. I'm interested in the LO output of DX90 and X5 to pair with my ALO RX Mk3 B+. 

 
I don't like the variable LO either. That said... I only made the radical mistake of IEM's in the ears and hitting play at full volume, once. That won't happen again. Once you get a harsh lesson like that, you learn quickly.
 
The advantage I've discovered is that the amp in my car tends to distort or clip when the DX90 LO is at full volume. It doesn't when dropped from 255 to 245. So there is my main positive reason for not hating the variable LO.
 
Apr 15, 2015 at 1:05 AM Post #11,862 of 14,089
I absolutely love the variable LO. What I hate is that HO and LO can't be independently controlled.



Since the volume controle happens in the dac I don't see how that would ever have been possible
 
Apr 15, 2015 at 2:22 AM Post #11,865 of 14,089
Guys help me please, My dx90 is not appearing on My computers, no sd detected. Right click on safe to remove icon it does detect it as dx90 or when I try batchtool it detects as rockusb but its the sd card that its not appearing, I can no more add songs and up to 2.1.5 L2, I tried upgrading through batch tool but its giving me a message like check chip start, check chip fail
 
Update** I can upgrade to Ibasso's firmware only with batchtool but cannot upgrade to lurkers firmwares, why is this so, and my dx90 and sd is still not appearing on my My computer, else I could just copy and upgrade internally
 

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