Discrete OPAMP

[tomat]

Hi
i'm interest to order ,how is the way ? ,i was sent you email about two days ago but not get a reply.
can you tell me the difference of new SUN with the older version? and the MOON also

thanks

 

[audio-gd]

Helo!

I will reply every email,
It seem I have not received your email.
When I received your email, my mailbox will send a reply email automatic, and I will send another reply in 24 hours.

About SUN(version 2),We thought about some customers feedbacks , then we have in allusion to adjust the circuits and parts , improve and made OPA-SUN (version 2), OPA-SUN (v2) had more humanity than original , but keep energetic, huge dynamics and good impulse response.

Moon:This discrete opamp uses dual differential gain stage and single ended output stage circuit design , we try and listen long term . The OPA-Moon sound characteristics is had a bit tubelike taste (vacuum valve) , soft and thick .

 

[jam]

Rudiger,

Could you share more information on the distortion differences with the cascode. Any differences in bandwidth?

Thanks,

Jam

 

[Onvinyl]

-3dB BW is around 8Mhz witout c, and *worse* with cascoding (5Mhz)
3rd and higher order harmonics rise at an order of magnitude, 2nd is the same (and dominating).
all simulated.

 

[Onvinyl]

oops..

but this one is an order of magnitude *better* EDIT: only with high freq (20k), 20Hz is still better without cascode!

Just an simulation trick without any connection to the real world?

Rüdiger

 

[woodturner-fran]

Would these be a direct drop in replacement for an OP27 or 37? or are they dual only?


Fran

 

[jam]

Rudiger,

Thanks. This is useful information.

Jam

 

[31697B]

you need to put the 14K to the source instead of the output. -RNM

 

[Jenyok]

I am looking for descrete op amp on germanium transistors.
.