David,

Any time you reboot the Audio PC OS, you can lose connection to the NOS1.  Generally, the following has worked for me.
- Close XXHE
- Restart NOS1, either using the on/off switch at the back or resetting Switch #2 (I always mix us if this is #4 or #2--it is the one that turns the DAC off/on, not the battery switch)
- Make sure your DC offset is set correctly.
- Relaunch XXHE

You may sometimes need to reboot the Audio PC as well.

One more thing, I went to the full OS to backup things in case they got screwed up but now on my USB control panel, the NOS1 is connected but streaming is down.

I've turned off the DAC  and restarted the computer but it still is the same. It's been so long since I've had this happen that I cant quite remember how to get the device to show up again in XXHE. It is still the primary sound driver.

David

Shoot. Disregard all that, I was able to get another pop and channel cut out with a 24 bit 48.


Edit-  After more testing, it seems like if I start with a 44.1 in a playlist and add a 48k after and play in unattended, all works fine.  The problem may only be from starting a 48k track

Also, if I reboot and start the Phasure driver control and change from 352, 800 to 384,000 I'll get a pop, so it isn't related to XXHE

I took out the Lush^3 and put in  a generic USB and the popping stopped. There is no noticeable click between tracks that change sample rate and all is working great.

I have Peter's latest Lush^3 settings but may revert to the original ones that it was sent with. I don't know if the connector is not fitting properly  or it is the settings.  I also have the Lush^2 which I can try.

Peter, do you know if removing one of the wires in the Lush^3 could cause a problem?

I do have switch #3 down and have XXHE 2.11. I also need to have the volume set to around -42 because of the sensitivity of my speakers.

I did not have this happen with my non-upgraded NOS1 so I was wondering if there were changes to the G3  which might be throwing something off for me. Today, I was able to play a playlist with 44.1 and 48, with both 16 and 24 bits without any trouble. When I mixed in an 88, I heard a pop and the right side channel cut out. Sound was very faint from that speaker and that continued as I skipped to songs which were other formats.

I turned off the NOS1 from the front switch (not the back) and started another playlist with 44.1 and all went back to normal.

The only thing I can think to try, if it isn't an XXHE setting, is another USB cable. 

David

Hi again Chad,

Closest would be Norway (Bergen IIRC).

But are you saying you own the Sigma ? ... that would be very special.
And if I got it right that you think they can perform better, then I might agree (I was there when they were build). How to solve that is another matter.

?

Peter

David,

Whether Swich#3 is related I don't even know, but it well could bee because this is about an internal ground connection.
Otherwise it is the same for everybody as far as I know - and like Ramesh said - it is a firm tick and most certainly not something unbearable.

The tick is not ground related that I know of, but it is a very brief mismatch between the sampling rate setting (from the one base clock (44.1) to the other (48)). I think you can mimic it by changing the sampling rate manually in the NOS Driver Control Panel (e.g. switch from 176.4 to 192 and back).

What theoretically could happen is that your amplifier is way over powered, seen by the relatively high attenuation you must apply. Thus, say that you attenuate in XXHighEnd in the realm of 48dBFS, then you have a theoretical ~20dB too much power, which would make your "tick" 20 dB unnecessary loud(er) as well. Could that be the case ?

Peter

David,

Jogging my memory. The only thing I remember is a discussion related to the position of Switch #3 on the NOS1.  It was not specifically related to switching to high res formats. I do get a slight "tick" when this happens, but it's very soft.  I may be completely off here, but at one time there was potential for a loud pop related to leaving Switch #3 either up or down (I do not remember) for an extended period of time.  I'm assuming you are using the latest version of XXHE that fixed the "crack" detect issue that could also create a very loud pop.

Ramesh

Hello everyone,

I just upgraded to the NOS1 G3 and Stealth II with the Lush ^3. I’m using all the same settings as Peter, but I get a load pop when the format switches to MQA or a higher res. It's very much like when the DAC is turned off when the amp is still on, so it's quite unpleasant.

This didn’t happen with my older NOS1 as far as I remember and I can’t find a related topic in the forum yet.

If anyone remembers having this problem and how to fix it, I would greatly appreciate it.

Best regards,

David

Thanks Peter, interesting as always.

I am not going waste anyone's time talking about my diy Orelino since it it has nothing to do with the real Orelino. What you said is true, I did not achieve the sound what I wanted by going diy. It is too much of a compromise. The baffle resonances, filters, all of it. That is why got the Sigmas when I got the chance. I never got the filter right by my self so I really understand your point.

Before my next statement I want to say that my system is not perfect. It does not have the magic highs like Acapella ion tweeter has. It does not image 3d like some smaller speakers do. The sound does not have the coherence like good full range drivers have etc.

But it does represent music realistically in my opinion. The reason I listen so close to the speaker is because only then I get to peek into the recording, only then I really feel the music, see the performer in front of me. In my room only then i get the feeling and the sound what I need to get satisfaction out of hifi system - it is funny since once a hifi retailer in my country told me it is impossible to achieve the sound I am searching for when he asked what I want.

I have not heard Orelo or original Orelino (I would very much like to) but I am sure they do music very very well. To my knowledge there are not Orelo or Orelino owners in my country Finland.