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DAC-END R (ES9018) full assembled board

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#961
sipo75 said:
My "build" - unbalanced direct out. I am planninng on replacing the toroid with an r-core transformer. The DAC seems to be very sensitive to power line influences. When I switch the bathroom lights the DAC looses the lock for a second. USB only so far.

The sound is an improvement compared to the Musical Fidelity V-DAC II which I was listening with for a year now. A very noticeable improvement in bass.
Click to expand...

I have never lost lock due to switching lights.
I do have a power conditioner (one of those Monster Cable types) and all the wiring in the house is 3-wire with earth.

I see you have an EMI filter, so the lines are already decoupled to ground.
 
#962
sipo75 said:
My "build" - unbalanced direct out. I am planninng on replacing the toroid with an r-core transformer. The DAC seems to be very sensitive to power line influences. When I switch the bathroom lights the DAC looses the lock for a second. USB only so far.
Click to expand...

I never lose lock, usb only (knock on wood). House is relatively new as houses go, around 40 years old, so I think my power lines inside are reasonable.

I am using two 6.3v split bobbin transformers (I had them around), and each one is connected to a "felix", which consists of a set of x caps, a common mode choke and another set of x caps. I plug this into another power conditioner, so my power should be pretty clean.

I'm pretty sure you torroid is big enough 😉
How many VA is that thing?

BTW, what are you using for an output stage?
Did you change your output to single ended?

I installed a pair of LL1684's a few days ago, they sound pretty nice, pretty sure they are going to stay.

Randy
 
#964
yildiray said:
Hi quanghao,

I received DAC thank you.There isn't any cosmetic problem .

But i couldn't see opamps and any Input and output connectors ??

Amanero unassembled.

I paid extra 180$ for them am i wrong?

Thank you
Click to expand...

Hi quanghao said to me extra 180 $ is not include opamps,connectors,assambling .He said 180 dolar just for fedex :

"Hi,
You have to register to buy the following items:
- Kit DAC: 01
- Kit IV: 01
- Chassis: 01
- Tranformer: 01
- USB: 01
Total amount of goods: 750USD
Shipping by Fedex: $180

You have to pay me respectively:
- Paid 1: 375 usd (on 03/15/2013)
- Paid 2: 375 usd (on 05/06/2013)
- Paid 3: 150 usd (on 06/17/2013)
- Paid 4: 30usd (on 06/20/2013)

I think maybe we have a complete misunderstanding of the DAC."

So other buyers must be careful about this issue.
 
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#966
randytsuch said:
I never lose lock, usb only (knock on wood). House is relatively new as houses go, around 40 years old, so I think my power lines inside are reasonable.

I am using two 6.3v split bobbin transformers (I had them around), and each one is connected to a "felix", which consists of a set of x caps, a common mode choke and another set of x caps. I plug this into another power conditioner, so my power should be pretty clean.

I'm pretty sure you torroid is big enough 😉
How many VA is that thing?

BTW, what are you using for an output stage?
Did you change your output to single ended?

I installed a pair of LL1684's a few days ago, they sound pretty nice, pretty sure they are going to stay.

Randy
Click to expand...

The toroid is specified with 50VA - 2x6.0V/4.17A.

Yes, I am using the single ended output configuration now. Set output to unbalanced with the remote and removed the jumpers J5,J8,J7,J6. Shorted the DAC+ and DAC-. No tear down resistor (10R) yet - I will try that today.

I plan to build the Sen V18 as I/V stage. The FETs are on their way.

Felix? What are x caps?
 
#970
SEN IV V18

danny_66 said:
x caps are capacitors that are used to put between the live and neutral of the mains AC, in case of failure they don't short.

Where can I find some more information about the Sen V18 as I/V stage?

Regards,
Danny
Click to expand...

Thanks.

The above mentioned thread is the place to look. V18 refers to the version of the SEN designed for the ES9018.

The original article from Linear Audio http://www.linearaudio.net/images/onlinearticlesPDF/didden-la -vol2euvl.pdf

Attached the schematics of the V18 version that I have found.

The group buy thread
http://www.diyaudio.com/forums/group-buys/196585-sen-cen-all-jfet-iv-converter-evaluation-pack.html
 

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  • 272695-zen-cen-sen-evolution-minimalistic-iv-converter-sen-iv-v18-schematics.png
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#974
Domi_78 said:
- You can only remove the jumper "3.3USB" on the board. The Amanero will not be powered longer when the DAC is turned on.
Click to expand...

My question was perhaps misleading.

I want to move the Amanero module away from the DAC. So I will have to wire the connection instead of using the plug. Now I am wondering which pins will have to be wired between the DAC and the Amanero. I do power the Amanero from the DAC supply so GND and 3.3V are known.
 
#977
Halook said:
Hi randytsuch,

Were you using USB only?
Mine also OK 44.1kHz, 96kHz, 192kHz and DSD with JRiver on Win7 via USB but no luck via coaxial anything above 48kHz.
Click to expand...

Ever get this working?

I am asking because I just added optical input to my DACEND, and it works at 96kHz for me, I haven't tried anything higher yet, but 96 sounds good.

Source is still a macbook running jriver for mac.

Randy
 
#978
randytsuch said:
I am asking because I just added optical input to my DACEND, and it works at 96kHz for me, I haven't tried anything higher yet, but 96 sounds good.Randy
Click to expand...

Source : CD transport, Inputs : Coax. or Opt. or AES/EBU.
44.1 : OK

Source : SqueezeBox Touch, Inputs : Coax. or Opt. or AES/EBU.
44.1 : OK
48.0 : KO 😡
88.2 : KO 😡
96.0 : KO 😡
192.0 : KO 😡

Source : Aston Wamba tuner, Inputs : Coax. or AES/EBU.
48.0 : KO 😡

Source USB : Not yet try but it seems that there is a problem because this input is very noisy without signal. 😡

Volume control : impossible to shut down completely, at 1% level remains at demonstration stage. 😡

No muting on I/V outputs when turning On/Off : Could be dangerous for loudspeakers... 😡

I am quite disapointed by this "Reference DAC"... 😱
 
Last edited:
#980
Domi_78 said:
Source : CD transport, Inputs : Coax. or Opt. or AES/EBU.
44.1 : OK

Source : SqueezeBox Touch, Inputs : Coax. or Opt. or AES/EBU.
44.1 : OK
48.0 : KO 😡
88.2 : KO 😡
96.0 : KO 😡
192.0 : KO 😡

Source : Aston Wamba tuner, Inputs : Coax. or AES/EBU.
48.0 : KO 😡

Source USB : Not yet try but it seems that there is a problem because this input is very noisy without signal. 😡

Volume control : impossible to shut down completely, at 1% level remains at demonstration stage. 😡


I am quite disapointed by this "Reference DAC"... 😱
Click to expand...


Are you sure that SqueezeBox Touch have a spdif working at 96 and 192KHz ?

Are you sure to enable spdif at 48KHz on Aston Wamba tuner ?

Try USB input
 
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