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NDK NZ2520SDA oscillators group buy
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Old 2nd November 2017, 05:09 PM   #121
sontero is offline sontero  Italy
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Location: Cagliari - Sardinia
Hi Lorien
I sent a message to you for this GB
thanks
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Old 3rd November 2017, 05:20 AM   #122
chris719 is online now chris719  United States
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NDK NZ2520SDA oscillators group buy
I received my parts last week, thanks! Sorry for the delay, have been traveling.
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Old 3rd November 2017, 09:23 AM   #123
Lorien is offline Lorien
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NZ2520SDA Group buy (for 45.1584 MHz and 49.152 MHz):

1. Lorien - 10 pairs
2. M_Baou - 1 pair.
3. sontero - 1 pair.

@ sontero: I got all your messages thus I've updated the GB list, don't worry!
------------
As for the markings on the NDK oscillators, there is nothing clear from NDK so far! I got a document stating all the marking on the parts and their meaning and, I looked into it just to make a difference between SD and SDA parts.
There's none! I'll keep pushing though, but so far anyone can sell "SD" parts as "SDA" alternatives since you have no chance in differentiate the two!
At least for the time being! Given this, you have to be careful what you're buying and in whom you'll put your trust in as I'm sure there will be many who'll take advantage of this, especially sellers from Asia.
Kind regards,
L
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Old 3rd November 2017, 09:14 PM   #124
sontero is offline sontero  Italy
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thank you Lorien
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Old 4th November 2017, 03:22 AM   #125
bwaslo is offline bwaslo  United States
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NDK NZ2520SDA oscillators group buy
What is the difference supposed to be between SD and SDA?
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Old 4th November 2017, 05:50 PM   #126
Shutdown98 is offline Shutdown98  Netherlands
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A week ago i recieved a new WaveIo with the NDK A clocks.
I swapped it with my current WaveIo with the older NDK clocks.
My wife got annoyed becouse now she can hear little squeeks (from fingerplacement on the strings of the violin).
I am very happy with the new clocks.
Did not expect the difference as i use a Soekris dam dac. The dac fifo reclocks the whole signal.
In my perception the whole sound is better. Better soundstage, more tiny details. Bass is more tight. Can be percieved as less bass.
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Old 4th November 2017, 07:15 PM   #127
bwaslo is offline bwaslo  United States
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NDK NZ2520SDA oscillators group buy
Found the data page for the older SD model:

NZ2520SD(OA / AV)/Crystal Clock Oscillators/NDK

versus the new SDA model:

NZ2520SDA(OA / AV)/Crystal Clock Oscillators/NDK

NDK NZ2520SDA oscillators group buy-nz2520sd-sda-data-png

Looks like a substantial lowering of 1kHz phase noise by about 12dB (wish they specified 10Hz and 100Hz noise too, but realize those are much harder to measure).
Attached Images
File Type: png NZ2520SD and SDA data.png (10.9 KB, 314 views)
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Old 16th November 2017, 10:01 AM   #128
Lorien is offline Lorien
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Join Date: Nov 2007
NZ2520SDA Group buy (for 45.1584 MHz and 49.152 MHz):

1. Lorien - 10 pairs
2. M_Baou - 1 pair.
3. sontero - 1 pair.

For those interested in 4x.xxx MHz oscillators, I was announced that I'll have the parts at the beginning of December so I'll contact you over PMs to as for the Paypal addresses so I can issue the invoices!
If anyone else wish to have a pair or more then put your DIYAudio nick name on the list or contact me directly!
Kind regards,
L
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Old 20th November 2017, 06:09 AM   #129
pidesd is offline pidesd  Canada
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For those of you who finds difficult to solder small oscillators....what i did with the previous version was to make it stand upright and solder only 2 pads ''directly''(not surface to surface though) to the board and after that solder two small ''legs''(wire or resistor strand) at an angle joining each oscillator terminal to the board. it still is compact given the size and easy to desolder if needed.

this would have save my quite some time and a dead NDK....
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Old 21st November 2017, 06:44 AM   #130
Extreme_Boky is online now Extreme_Boky
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Hi Lucian,

I have received the Wave I/O board today. The difference in sound is simply stunning. Last time I had tears in my eyes caused by an exceptional sound I was listing to, was a long, long time ago when I heard Dynaudio speakers for the first time (we are taking more than a few decades ago!) .... and again today after I swapped the SD for the SDA Wave I/O card... Thank you so much. I will post my impressions on DIYAudio forums as well... once I manage to process the stunning improvement in sound quality.

I will send the second board to you this week and will let you know once sent.

Thank you!!!
Regards,
Nick
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