[Elecraft] KIO3B Audio Spec

[Joe Subich, W4TV]

 >  Without published specs for dynamic range, SNR, etc. we
 > don't have a means of assessing this.

The CODEC used in the KIO3B is from the same family as used by most of
the amateur USB sound card products (including microHAM USB Interface
III).  Unless the designer cuts corners (like the designer of the
Signalink USB) by eliminating critical power supply bypassing and
regulators, performance of all devices using the same family of USB
Audio CODECS will be very similar based on the limits of the 16 bit
ADC, the noise figure of any audio preamplifiers used by the designer
and the power supply noise rejection (does the design properly keep
digital noise out of the power supply for the analog circuits?).

I have not tested the KIO3B but I certainly would not expect that Wayne
cut any corners in the design.  Thus performance of the KIO3B and
microHAM USB Interface III (noise floor, dynamic range, etc.) should
be nearly identical - within unit to unit manufacturing tolerances.

73,

   ... Joe, W4TV


On 12/30/2015 4:05 PM, Dan AE9K wrote:
> For those of us that have external interfaces like microHam DigiKeyers the
> possibility of eliminating a box and the hydra cable of connections to the
> K3 is certainly motivation enough for the KIO3B upgrade.
>
> I am curious though how the audio performance of the KIO3B compares with
> other interfaces that defined the high end (e.g. Creative EMU series,
> microHam, etc.).  Without published specs for dynamic range, SNR, etc. we
> don't have a means of assessing this.  While Lyle responded with the
> bit-depth and typical sampling frequencies we could use a bit more info.
>
> If the specs are decent the price tag seems acceptable to me.
>
> Dan
> AE9K
>
>
>
> --
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