[Elecraft] USB Sound Adaptor

[Jeff Herr]

I would be inclined to use whatever currently-existing on-board unit for the
maiden voyage.

Then, test that fancy usb unit out, and then tell us about the bandwidth.







-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Clint
Sent: Wednesday, August 29, 2012 10:37 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] USB Sound Adaptor

I received the USB Dongle yesterday. (
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=310401470794&ssPageName=A
DME:L:OU:US:3160 ) First, it IS stereo in and stereo out. There is some
confusing wording even on the packaging but it is indeed stereo all around.
Someone suggested that the chip MAY not be as advertised. As this IS from
China (with a Taiwanese chip) and having dealt with Asia for decades, I
opened it (not recommended for the inexperienced, it is glued shut).
It is indeed the Via Vinyl Envy USB VT-1620A chip (
http://www.via.com.tw/en/products/audio/usb/vt1620a/index.jsp ). The Via
driver from their web site loaded and recognized the chip so I am 100% sure
it is genuine. It should be capable of:
a.. 2-channel ADC with 90dB SNR, 16/24-bit supporting 44.1/48/96/192kHz
sample rates a.. 2-channel DAC with 95dB SNR, 16/24-bit supporting
44.1/48/96/192kHz sample rates I have some photos if anyone is interested.
It is a nice little board and looks to be well made.
Both the input (Mic) and output (Headphones and SPDIF optical) are standard
1/8 stereo jacks with the output having the additional optical coupler
mounted just past the electrical contacts. 
It works great with HRD but I have no way of testing it for I/Q use as my
KX3 is still a dream and my K3 is not equipped for I/Q out. 
Maybe someone better equipped and more knowledgeable could put this little
guy through some tests??? If so contact me. FYI my QTH is Watsonville.
BTW, I have no financial interest in this at all. This is all just FYI and
me getting ready for my KX3 when the CFO gives me the go ahead.

73

Clint KI6SSN
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html