[wwmhf]

I have similar experiences with the v1.41 and v1.61 firmwares and I have been using v1.41 for many months. In my set up, the U16 is connected to a Gustard X20 dac via I2S.

 

[Criable]

I have similar experiences with the v1.41 and v1.61 firmwares and I have been using v1.41 for many months. In my set up, the U16 is connected to a Gustard X20 dac via I2S.

I suspect your experience with the 2 newer firmwares may be similar to mine

Please share your findings too

 

[Alcophone]

Hm., what time? Orbital time isn't equal terrestrial time, it's a bit slower due to Einstein theory (atomic clocks located on satellites boards runs slower the same one located on Earth). So, satellits transmiting corrected time for Earth. What about a jitter during this Einsteins correction?

Well, that is above my pay grade But the idea is that it's very stable long term, so it can be used to counter aging in a clock. On the other hand, short term stability should be more relevant for audio, and I can see that fluctuate more with a GPSDO as satellites go in and out of range. Just my speculation, though.

 

[Alcophone]

What is NFB? Please explain if possible

Maybe it refers to the Audio-GD NFB-11 DAC/headphone amp: http://www.audio-gd.com/Pro/Headphoneamp/NFB11/NFB11EN.htm

 

[PitBul34]

Got this but have no idea if any good (or if the OCXO inside is new

It's can not be new, the new ocxo chips costs > $1500

 

[lucianpescaru]

Not the NFB11 but the NFB range from Audio GD.

 

[FredA]

It's can not be new, the new ocxo chips costs > $1500

There are cheaper units i am sure. Mine is from a chinese cie.

 

[FredA]

Just installed the 1.61 nfb beta. I have an audio-gd r7-he. So far, just a single pop changing data rate, not occuring afterwards, and everything plays fine. 192,188,96, 44.

For those installing it on an i2s dac, don't forget to select the right i2s mode. I selected PSA.

Too soon for champagne but promising.

 

[wwmhf]

Just installed the 1.61 nfb beta. I have an audio-gd r7-he. So far, just a single pop changing data rate, not occuring afterwards, and everything plays fine. 192,188,96, 44.

For those installing it on an i2s dac, don't forget to select the right i2s mode. I selected PSA.

Too soon for champagne but promising.

I am wondering whether we can use this v1.61 NFB with other DACs than the ones made by audio-gd. I could try it myself, but I am away from my equipment.

 

[Criable]

I am wondering whether we can use this v1.61 NFB with other DACs than the ones made by audio-gd. I could try it myself, but I am away from my equipment.

I don’t think the “nfb” label on this firmware refers to audio gd nfb dac
Am using it with a denafrips dac - so far so good

 

[roni44]

To add some information here -

1) I received one of these and cannot get the GPS lock indoors (inside lower level apartment and 4 meters from the nearest window). I need about a 10M lead to the antenna so if I can find that I will advise the group.
2) I found a manual online, they suggest a clear view of the sky for best performance. Also interesting comments about performance vs. warm up time.
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=11&ved=2ahUKEwimm-vvk77jAhXSaN4KHXbDDDk4ChAWMAB6BAgCEAI&url=https://www.eevblog.com/forum/testgear/bg7tbl-gpsdo-master-reference/?action=dlattach;attach=403461&usg=AOvVaw3ZQ-FwkItEVt5DSJeyohva

Oh man, sorry to hear, since I live on the 11th floor apartment, my reception might be much easier to lock onto. I did ask the local user whom suggested the 10mhz clock, himself did buy a longer antenna to get the signal. I do hope the new antenna will work out for you.

 

[roni44]

After install of v1.77, the firmware fixed lipsync issue I had with watching youtube. Another user I spoke to he didn't like the sound of v1.77 at all, he mentioned compare to v1.61, v1.77 didn't sound as live and clear. I will do my own comparison this weekend and report back.

 

[wwmhf]

I don’t think the “nfb” label on this firmware refers to audio gd nfb dac
Am using it with a denafrips dac - so far so good

I installed the v1.61 NFB firmware. It worked with my Gustard X20 DAC; however, the channels are swapped! I do not want to comment on the sound quality at this initial stage.

 

[wwmhf]

The v1.77 does not have the channels swapping issue like the v.161 firmware

 

[roni44]

I installed the v1.61 NFB firmware. It worked with my Gustard X20 DAC; however, the channels are swapped! I do not want comment on the sound quality at this initial stage.

if I kept in v1.41, then channel is swapped, with older1.61 comes with selection for other brands, I have tested and cycle thu all the brands available, few works perfect with my Micromega M100, I ended up staying with PSA. Not sure what's 1.61NFB do, but I will try tonight.