Ultra-high performance, yet rather simple - hybrid and more!

[e_fortier]

Hi,

Please see my post 1092 from above.

BR
Eric

 

[SumanDachepalli]

Hi,

Has anyone tried and build ComSuMo ? how is the output sound signature is like ?

Regards,

 

[SumanDachepalli]

Or any help with working gerbers or asc file for TubSuMo that can be usefull for me to modify for ComSuMo and test it.

Thanks in Advance,

 

[SumanDachepalli]

ComSuMo

Hi,

Has anyone tried and build ComSuMo ? how is the output sound signature is like ?

Regards,

Trying my luck again !!!!

 

[vzaichenko]

Hello,

Can you please explain what ComSuMo option is? I really don't remember the design with such a name.

At the time of extensive testing in 2015 I have tried 3 input devices at the input:
1) Tube triodes
2) jFETs
3) BJTs

All 3 options worked very well, although my personal preference soundwise is tghe tube.

Cheers,
Valery

 

[SumanDachepalli]

ComSuMo

Hi Valery,


Nice to have you back, assuming your and your family's health is good now.

I picked up ComSuMo from the start of this same thread, attaching a picture for reference.


Regards,
Suman

 

[vzaichenko]

Right, I had to look at the first post

OK, I have sent you a PM - I will look into the layout, it requires a slight modification for ComSuMo.

Cheers,
Valery

 

[SumanDachepalli]

Thank you Valery, will be eagerly waiting for your modifications on ComSuMo.

 

[vzaichenko]

ComSuMo 2021 Edition

OK, here we go - updated layout with corresponding schematic and berbers.
These gerbers are not good for home etching - soldering pads are too small for hand-drilling.
No problem for manufactured boards though.

Cheers,
Valery

 

[SumanDachepalli]

Highly appreciated !!!

Do we need to use matched pairs of BJT, FET and the input section ? as well do we need to look for any character match between BJT & FET ?

May I know the voltage recommendations of this IPs ? and can I use Slewmaster OPs with this IPs ?


Thank you,

Suman

 

[vzaichenko]

Hi Suman,

Answering your questions:

- Yes, matched pairs in all the BJT LTPs will be an advantage;
- No, matching between BJT & FET is not required; also, the pair of FETs at the input does not require matching (followers);
- Optimum rails right now are +/-50...55V DC;
- You can use it with Slewmaster OPS no problem.

Please let me know if you will have more questions

Cheers,
Valery

 

[SumanDachepalli]

Thank you for all your patience, Valery.

I will move forward with testing ComSuMo, will keep you posted with my progress.

 

[SumanDachepalli]

Does the R4 needs to be a variable resistor (pot)?? In ComSuMo

 

[vzaichenko]

24K 1W? No, it's just a 1W resistor.

 

[e_fortier]

Christmas is coming so how about this, here’s your chance to pay below 50% the regular price and have an amp already build by a pro, look below;

FS : VZaudio NS OPS Amplifier with two different IPS

Thanks
Eric

 

[e_fortier]

Please see above post.

 

[e_fortier]

Hi

Can someone please explain why nobody in the Swap/Meet or in this thread seems interested in buying this amp at a ridiculous low price and also considering it was fully assembled with genuine parts and built by our expert builder Pinnochio.

Is this an old model and there’s a newer and better one available? I’m clueless so any pointers would be appreciated.

Thanks
Eric

 

[AKSA]

Eric,

Tell me about it. It is very difficult to understand the motives and wishes of audiophiles.
I recognised Do's master skills; beautiful stuff, really stunning.
There is a suspicion about local product; this is the reason I like to sell the Aspen products overseas. Australians tend to want at Chinese prices, and scoff at local products for some reason I don't understand.
He will sell it, but let me know he should NOT drop his price........

Harumph..........

Hugh

 

[andrewlebon]

Valery is no more

 

[evanc]

Valery is no more

Sadly so