DAC-9

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Roman Kozak

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Re: DAC-9
« Reply #200 on: 1 Dec 2017, 12:53 pm »


My loved pair !
NuPrime Dac-9+Densen B-100

pewe

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  • Posts: 34
Re: DAC-9
« Reply #201 on: 4 May 2018, 05:39 pm »
Is it possible to use xlr and rca outputs from the dac9 at the same time? I want to use the xlr's from dac9 to a pair of active speakers  and the rca outputs to an active subwoofer.

John Casler

Re: DAC-9
« Reply #202 on: 4 May 2018, 06:07 pm »
Is it possible to use xlr and rca outputs from the dac9 at the same time? I want to use the xlr's from dac9 to a pair of active speakers  and the rca outputs to an active subwoofer.

Yes, both are active at the same time.

tudorbuda

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Re: DAC-9
« Reply #203 on: 8 May 2018, 09:18 pm »
Hello all,

i'm new here, I made the account because i recently bought a Nuprime DAC 9 and 2x STA 9.
I'm having a couple of issues with the DAC (i had 3, but the USB buzz dissapeared after I modified the power cord, leaving out the ground wire. Powered usb hub didn't solve it.)

1 - each time i plug in the DAC a very loud BANG comes out of the speakers (probably full power). If i turn it on and off it stays quiet, but if i unplug and then plug it again, it`s heart attack time. Luckily my main speakers are being refinished and i`m using some small Quad 12L bookshelfs. it stays on 99% of the time, but when i need to do some cable management, i always forget to disconnect the speakers or XLRs before i plug in the DAC.

2 - I'd like to use the DAC 9 for my headphones setup too, but when i connect the RCAs from dac out to my Lehmann Linear RCA in, I have to raise the DAC volume and thus, sending power to the speakers aswell.
Right now it`s like this: PC>usb>dac9>optical out>Styleaudio Carat Sapphire DAC>RCA to Lehmann Linear> HD800... and it`s rather stupid. I'd like to get rid of some of the small boxes, not add other ones :)


rustydoglim

Re: DAC-9
« Reply #204 on: 11 May 2018, 04:02 am »
Regarding the pop, you should not be plugging and unplugging the DAC without going through the power switch. When power switch is used to turn on/off the device, there is a relay that will properly power on and off internal components (to avoid random pop noise).

For headphone use, normally you would be using another headphone amp with volume control, such as HPA-9.

tudorbuda

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Re: DAC-9
« Reply #205 on: 11 May 2018, 05:21 pm »
Thanks for the answer.

about the headphone issue, i won't add another unit just for that. I'll probably switch to DAC 10H, to get rid of the other two small boxes
2 questions, tho:

1 - do you think it will be a better headphone amp than the Lehmann Linear? I'll stick with HD800 and Audeze LCD2
2 - won't i have the same issue? If i want to switch to headphones, can I separately control the volumes on the headphones and amp output?

rustydoglim

Re: DAC-9
« Reply #206 on: 13 May 2018, 08:20 am »
about the headphone issue, i won't add another unit just for that. I'll probably switch to DAC 10H, to get rid of the other two small boxes
2 questions, tho:

1 - do you think it will be a better headphone amp than the Lehmann Linear? I'll stick with HD800 and Audeze LCD2
2 - won't i have the same issue? If i want to switch to headphones, can I separately control the volumes on the headphones and amp output?

1. Read the review https://www.innerfidelity.com/content/nuprime-dac-10h-digital-analog-converter-headphone-amp#3tYhiFHSReehBLXl.97.  I will save you the effort - the headphone amp on DAC-10H is as good as a well known $3000 pure headphone amp, both reviewers were shocked to find out.
2. DAC-10H has 16 gain settings so you can find something that match your headphone and speaker, if you are too lazy to adjust the volume when you switch over from one to another :)

By the way, it is somewhere in the manual that you need to use remote control to turn off the line out of DAC-10H.  Inserting the headphone will not automatically turn off speaker. DAC-10H was designed with studio professionals in mind.


tudorbuda

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Re: DAC-9
« Reply #207 on: 21 May 2018, 09:53 am »
Thank you for your answers,

now i connected the DAC 9 to a ROTEL RB 1090 trough unbalanced RCAs. Power switch on 0, plugged everything, press the power switch, BANG! 380w POP in some poor Quad bookshelfs, to the point where it may have caused some permanent damage to the drivers. Do you think that i may have received a defective unit? Should I RMA it?

Also the ground loop noises are back when connected trough USB, even with the ground wire disabled. I'll have to test it, switching back to the STA 9s, conecting the Rotel by XLR, etc. trough optical it's all good (the toslink small lid/cover got stuck in, then fell off)

By the way, about the review, it doesn't say that it's better than a 3k dedicated amp, it says that he never heard a $300 headphone amp (the price difference between 10 and 10H) that sounded this good.: "HiFiMAN's new HE-1000 flagship has impressive highs and also sounds quite good from the DAC-10H. That probably makes for my favorite combo of all, though I recognize the price discrepancy is fairly extreme. Folks running a $3k headphone would almost certainly own a dedicated high-end headphone amp. Still, it's nice to hear what the NuPrime is capable of."


That's why i asked, because the Lehmann Linear is a 900 euro amp and while i sincerely hope that the 10H is better, i wouldn't want to be a bit dissapointed.




MASH

  • Jr. Member
  • Posts: 2
Re: DAC-9
« Reply #208 on: 26 May 2018, 07:08 pm »
Hi everyone :)

I have a STA 9 with DAC 9. Wondering if anyone has experience with bluetooth dongle for DAC 9 - BTR-8
https://www.ebay.com/itm/BTR-8-Bluetooth-adapter-Bluetooth-streaming-receiver-For-NuPrime-IDA-8-DAC-9-/312033718675

Thank You,
Kind Regards

pewe

  • Jr. Member
  • Posts: 34
Re: DAC-9
« Reply #209 on: 28 May 2018, 12:40 pm »
Thank you for your answers,

now i connected the DAC 9 to a ROTEL RB 1090 trough unbalanced RCAs. Power switch on 0, plugged everything, press the power switch, BANG! 380w POP in some poor Quad bookshelfs, to the point where it may have caused some permanent damage to the drivers. Do you think that i may have received a defective unit? Should I RMA it?

This is my start up procedure on My Nuforce Ref 9V2:s monoblock and P8 preamp. I'm sure you can use the same technique for your DAC9. When the monoblocks and preamp have the power switch to "off" I switch the pre amp to "on". The preamp then automatically goes into stand by. Then I switch the monoblocks to "on". A very soft click is heard through the speakers. And after that I use the remote to start up the preamp by clicking "on".

Shutting down is the reverse: First "off" with the remote and then shutting down the monoblocks with the power switch on the back. You can't have your amp(s) on and then use the power switch on the back of the preamp....you will hear a loud noise.