http://dlcdnet.asus.com/pub/ASUS/Audio_Card/Essence_STX_II/E9122_Essence_STX_II_User_Manual.pdf
I bought this card like in another life because the Crosshair mobo
(also bought in another life) onboard 1/8" audio connectors aren't
worth a shit (continuous crackling and things) making music work
IMPOSSIBLE. This card has the 1/4" jacks as well!!! Going through
my things I just found the bundled pair of small pliers and these 3
chips. Very nice idea for the pliers, maybe other makers could start
bundling other computer-handy tools, bits-&-pieces, cpu-paste and stuff :-))
BUT...
p-11 says the (supplied) 3 chips will "change the tonal characteristics" without so much as giving a hint as to in what way, something one
would want to know BEFOREHAND! Are all manufacturers this freakin'
stupid?
On 11/19/2021 12:22 PM, bad sector wrote:I bought
http://dlcdnet.asus.com/pub/ASUS/Audio_Card/Essence_STX_II/E9122_Essence_STX_II_User_Manual.pdf
this card like in another life because the Crosshair mobo
(also bought in another life) onboard 1/8" audio connectors aren't
worth a shit (continuous crackling and things) making music work
IMPOSSIBLE. This card has the 1/4" jacks as well!!! Going through
my things I just found the bundled pair of small pliers and these
3 chips. Very nice idea for the pliers, maybe other makers could
start bundling other computer-handy tools, bits-&-pieces, cpu-paste
and stuff :-))
BUT...
p-11 says the (supplied) 3 chips will "change the tonal
characteristics"
without so much as giving a hint as to in what way, something one
would want to know BEFOREHAND! Are all manufacturers this freakin'
stupid?
Some commercial DAC chips, have high impedance outputs. Like one
megohm to ten megohms. This means for the next circuit in
line in the chain, they have no "driving power". An opamp with
FET inputs and 10^12 input impedance, helps quell any audio rolloff.
---- 1 megohm ---+-----> instrumentation amp ---> and so on
| unity gain follower
Cin
|
GND
When you substitute a 741 in the circuit, it sounds like a phone
booth on the output. All the high frequencies disappear.
At a guess, the "tonal characteristic" is "low pass filter".
As a result of this, at least a bit of care is required in vetting
amps to shove in the hole :-) Don't be shoving
the one volt item in there, or there will be magic smoke. The
sockets presented, will have no armament to protect
from catastrophe. You have to know what you're doing, and the damn documentation should explain stuff like this if the intent is for
the user to be running off to Radio Shack for Opamps.
When I was in school, one afternoon I had a lab, and it had to do
with high frequency rolloff. And we were given
a 741 each, to play with. So what I did, is left the lab and ran
across the street to the Radio Shack, and got a CMOS amp with 6MHz
gain bandwidth, and I did my lab with that :-) That's why I tell
these little jokes about Radio Shack, because I've actually done
that in a real world situation (play the part of an opamp snob :-)
).
On 11/19/21 1:37 PM, Paul wrote:
On 11/19/2021 12:22 PM, bad sector wrote:I bought
http://dlcdnet.asus.com/pub/ASUS/Audio_Card/Essence_STX_II/E9122_Essence_STX_II_User_Manual.pdf
this card like in another life because the Crosshair mobo
(also bought in another life) onboard 1/8" audio connectors aren't
worth a shit (continuous crackling and things) making music work
IMPOSSIBLE. This card has the 1/4" jacks as well!!! Going through
my things I just found the bundled pair of small pliers and these
3 chips. Very nice idea for the pliers, maybe other makers could
start bundling other computer-handy tools, bits-&-pieces, cpu-paste
and stuff :-))
BUT...
p-11 says the (supplied) 3 chips will "change the tonal
characteristics"
without so much as giving a hint as to in what way, something one
would want to know BEFOREHAND! Are all manufacturers this freakin'
stupid?
Some commercial DAC chips, have high impedance outputs. Like one
megohm to ten megohms. This means for the next circuit in
line in the chain, they have no "driving power". An opamp with
FET inputs and 10^12 input impedance, helps quell any audio rolloff.
---- 1 megohm ---+-----> instrumentation amp ---> and so on
| unity gain follower
Cin
|
GND
When you substitute a 741 in the circuit, it sounds like a phone
booth on the output. All the high frequencies disappear.
At a guess, the "tonal characteristic" is "low pass filter".
that one I don't need, actually this card is more than what I do
need except for the reliable 1/4" jacks which are a must
until the minis get totally redesigned with many sprung
contacts that cnnot fatigue.
As a result of this, at least a bit of care is required in vetting
amps to shove in the hole :-) Don't be shoving
the one volt item in there, or there will be magic smoke. The
sockets presented, will have no armament to protect
from catastrophe. You have to know what you're doing, and the damn
documentation should explain stuff like this if the intent is for
the user to be running off to Radio Shack for Opamps.
When I was in school, one afternoon I had a lab, and it had to do
with high frequency rolloff. And we were given
a 741 each, to play with. So what I did, is left the lab and ran
across the street to the Radio Shack, and got a CMOS amp with 6MHz
gain bandwidth, and I did my lab with that :-) That's why I tell
these little jokes about Radio Shack, because I've actually done
that in a real world situation (play the part of an opamp snob :-)
).
:-)
Thank you, I'm very happy to just leave as was, keeping the nice little pliers!
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