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Re: VOLUMIO soundcheck invitation for Hamburg, Germany

PostPosted: Sun Mar 04 2018 00:08
by DomieMic65
This thread is great!
Your effort is remarkable! Congratulations.

So from what I read there is not big (of any) need for an linear PSU with rpi. Is this the final conclusion you made? I was about to get one but now I am sceptical!
I do not use i2s DAC but I use DigiOne!

Keep up the good work!!!

VOLUMIO soundcheck invitation for Hamburg, Germany

PostPosted: Sun Mar 04 2018 13:04
by judydudi
Thanks DomieMic65 :D

You are right with the psu.
our 'Soundcheck' guests are may not professionals but we can say there is a hearable difference between most I2S Dac boards.
We also find out, if using a USB DAC a USB recklocker like 3R USB Renaissance or ifi iPurifier2 enhance the soundquality.
We compared many PSU from 10€ (RPI original) to 270€ (sbooster) without a remarkable difference, for our ears, mind you.
I guess, most onboard power rails on dac boards are pretty good.
This does not mean to me a good linear psu is not worth to buy, but it is next to cables, the last i would optimate in my system.
I'm sorry i have no experience to the DigiOne.

Re: VOLUMIO soundcheck invitation for Hamburg, Germany

PostPosted: Sun Mar 04 2018 14:29
by DomieMic65
judydudi wrote:Thanks DomieMic65 :D

You are right with the psu.
our 'Soundcheck' guests are may not professionals but we can say there is a hearable difference between most I2S Dac boards.
We also find out, if using a USB DAC a USB recklocker like 3R USB Renaissance or ifi iPurifier2 enhance the soundquality.
We compared many PSU from 10€ (RPI original) to 270€ (sbooster) without a remarkable difference, for our ears, mind you.
I guess, most onboard power rails on dac boards are pretty good.
This does not mean to me a good linear psu is not worth to buy, but it is next to cables, the last i would optimate in my system.
I'm sorry i have no experience to the DigiOne.


You are welcome!
I will continue to follow the thread with great interest!
ALLO is in the process of making a new ultra special dac for the rpi the KATANA and I guess that when it comes out you will test it against all the other specials you have there!
I am very interested for the conclusions!
2018 started very promisingly...

All the best!

VOLUMIO soundcheck invitation for Hamburg, Germany

PostPosted: Thu Mar 15 2018 13:44
by judydudi
Hi friends,

this is my next invitation. Soundcheck no.5 is on April 19. 8pm. again in beautifull Hamburg :D

the devices in competition are:
TERRATECHNOS – Terra-BerryDAC 2
mamboberry HD+ DAC with Crystek Clock
mamboberry HD+ DAC with IDT Clock
pi2design 502DAC PRO (yes !)
allo BOSS v. 1.2
allo Piano 2.1 with Kali in dual mono.
SABREberry DAC
odroid hifi shield 2
justboom dac zero
IQaudio DAC pro

all devices connected to allo 3A psu each.

I will try my new 16port HQ audio switch connected to ELAC element ea101eq-g amp.
feel free to join us and write a PM to linux@kompage.de
happy day.

VOLUMIO soundcheck invitation for Hamburg, Germany

PostPosted: Fri Apr 27 2018 09:33
by judydudi
Hi there,

sorry for no publishing information to this soundcheck.
I had only one registration so i decided to come back with a second try later on.
thank you so much for your interest, so stay tuned.
judydudi.

VOLUMIO soundcheck invitation for Hamburg, Germany

PostPosted: Fri Apr 27 2018 21:34
by enjoy
Hallo judydudi,

thanks for sharing your soundcheck results, it's always a pleasure to read them. Please allow me one short question about your PSU soundcheck from last October: are you aware that Kali has noise filters in the power line? This would explain that you could hear nearly no difference between different PSUs: most of the noise was already cancelled by Kali and never hit the Mamboberry. Looks obvious to me, or am I missing something?

enjoy

VOLUMIO soundcheck invitation for Hamburg, Germany

PostPosted: Fri Apr 27 2018 21:55
by Bobby
I can not wait to read the results of this meeting.

Regards,

Bobby

VOLUMIO soundcheck invitation for Hamburg, Germany

PostPosted: Sun May 20 2018 22:52
by ronson
Hi there! I would be glad to participate the next time at the Soundcheck session...
I have a Raspi 2 (Powered by MeanWell 5V PSU) with Curryman DAC which is Powered seperately by a DIY PSU (Informations here: CLICK . Cramped up in a MiniITX PC-Case.

Would bring it to the next Soundcheck Session! :)

Greetings, Ron

VOLUMIO soundcheck invitation for Hamburg, Germany

PostPosted: Sun Jun 03 2018 21:43
by bmc
judydudi wrote:HI Jazz and jonners,
Thank you for your interest. It also surprised me.
I closed SW1 and SW2 for PCM to DSD conversation. Besides, I have used 2 separate linear power supplies. THEL NT25HQ (2x5V)
and the USB terminator, as you can see in the photo. 125h burn in time.
You know, the Mamboberry was on Amp CH1, Piano2.1 on CH2 and TerraBerry on CH3 (IQaudio CH4, TauDAC on CH5), maybe it has to do something psychologically.
If you expect something and you find it, then the thing next to it is more uninteresting. euphoric matters. 'Ah yes' .
Another issue is the volume. I set each DAC to 100%. and I was glad that it sound very similar. But in fact it was not 100% the same.
Maybe it's like red and white wine lovers. this time the red wine lovers where less present.
Hope that helps to accept the confusion.


Hi Judydudi,

Anyway your group could re-listen to the TerraBerry with the Switch 1 and 2 off so that the AK4137 SRC does not convert the PCM to DSD to determine if the problem is in the SRC or the DAC or (of course) elsewhere?

Thanks,

BMC (U.S.)

VOLUMIO soundcheck invitation for Hamburg, Germany

PostPosted: Mon Jun 04 2018 07:43
by judydudi
ok, let's do it!

this is the invitation for the next soundcheck in hamburg.
it's on thursday, June, 28 at 8PM.

TERRATECHNOS – Terra-BerryDAC 2 ( with the Switch 1 and 2 off )
mamboberry HD+ DAC with Crystek Clock and kali
mamboberry HD+ DAC with Crystek Clock
mamboberry HD+ DAC with IDT Clock
pi2design 502DAC PRO
allo BOSS v. 1.2
allo Piano 2.1 with Kali in dual mono.
SABREberry DAC ( www.muc89.com )
odroid hifi shield 2
justboom dac zero
IQaudio DAC pro
...
and your setup - if you like :)


all played on a Elac Element Series EA101EQ-G AMP, ELAC FS 78 Speaker and allo 5V 3A PSU

feel free to come and join this experince. (it's free)
please send a message to linux @ kompage.de for register and more information.