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MAT02, 03 Elektor preamp schematic

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#46
MAT02 MAT03 elektor preamp class a

peranders said:
I have MAT02/03 for sale.....
Click to expand...
Samuel Jayaraj said:

Thanks so much; the search is over!!!
If I remember right, Iq is set to 40mA.

I've tested the sound of the servo version some years ago with MAT02 and BC560C;
its probably the best I've heard till date. Thanks again.
.
Click to expand...


😎
I have read Elektor and still subscribe to this electronics magazine.
My collection is several 100 of magazines
.. all 'stored' in big piles here in my room.
Some are read so many times, that they have fallen into pieces ...

😎
This MAT02 MAT03 pre amplifier is one of my absolute Elektor favourites.
Of all times!

There is also some other versions of same circuit concept, in Elektor,
used for Class A HeadPhones discrete amplifier.

🙂
I can only recommend this 'Super Class A Pre Amplifier'.
Very good Audio!
🙂



Attachment:
The circuit schematic, again ....

lineup
 

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#49
Re: So:

bogdan_borko said:
What makes this preamp THE "HI END" ???
Click to expand...

bogdan, what do YOU think?

at least you may have an idea, by study schematic a bit
🙂


My own idea:
- Excellent matched input pairs. Expensive transistors? YEEEES!
- Full Class A output stage. Does Op-Amps have this? NO!
.... 98% of them OP have a Current idle supply TOTALLY of <10mA
.... This amplifier has got 40mA idle, only in output stage
.... Which means it will put out close to 80mA in True Class A


lineup
 
#50
1."Expensive transistors?" - NOt a high end argument!

2.It didn`t ment to copare it with op amps...

3."This amplifier has got 40mA idle -" NOt a high end argument!

4."Which means it will put out close to 80mA in True Class A" - all discrete preams work in TRUE class A.


so?
 
#51
Re: Re: So:

Hi,
lineup said:


bogdan, what do YOU think?

at least you may have an idea, by study schematic a bit
🙂


My own idea:
- Excellent matched input pairs. Expensive transistors? YEEEES!
- Full Class A output stage. Does Op-Amps have this? NO!
.... 98% of them OP have a Current idle supply TOTALLY of <10mA
.... This amplifier has got 40mA idle, only in output stage
.... Which means it will put out close to 80mA in True Class A


lineup
Click to expand...
witch schematic?
the one you postet last?
it has an idle current in output stage of 15mA. So this amplifier is only capable of delivering 10mA eff. in "True Class A"
Regards
Jürgen
 
#53
Originally posted by bogdan_borko 1."Expensive transistors?" - NOt a high end argument!

2.It didn`t ment to copare it with op amps...

3."This amplifier has got 40mA idle -" NOt a high end argument!

4."Which means it will put out close to 80mA in True Class A" - all discrete preams work in TRUE class A.

so?
Click to expand...

So? Right, I was wrong all the way ... in your book

You read posts and opinions of me, with dark coloured eye, it seems.

We have a saying in my country: Look at me with you good and friendly eye, please.

As people can be both good and bad .. no one is 100% of any, This is a way to tell that our attitude towards others can be positive or negative. We have two (2) symbolic eyes .. one good and one bad eye.

And this is a choice we HAVE ... to BE Positive or to BE Negative. As long as you automatically lets your mode select you often end up to be EGOistic and Negative to others.

A way to counter this tendens, is to Actively make a positive choice: Treat others like you want to treated and looked upon.

It is also said: you SHALL love your fellow man. It is a command .. TO LOVE.

If we were not responsable for love and hate, means we can not make a choice.

But as humans.. we have a will and can make decision TO LOVE or NOT TO LOVE and TO HATE and NOT TO HATE and Despice some body.

This is why we are the ones that also are to blame for all hate and killings. And also those that are, hopefully, the ones creating love by saw a seed, that can become a Rose in the end.

--------------------------

Bogdan, my enemy

you still haven't given your own opinion on this great amplifier design maybe you do not want to risk somebody else will express another opinion and argue with you Don't be afraid, do like me, state your opinion! 😉

well, you asked - I answered If you are not satified with my opinion maybe you can tell us all what is bad with this amplifier Surely I have seen many preamplifer I like less and which most probably would not match the performance of this on.

lineup Lineup Audio Lab Amplifiers 500 Internal Server Error
 

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#54
Re: Re: Re: So:

juergenk said:

it has an idle current in output stage of 15mA.
So this amplifier is only capable of delivering 10mA eff. in "True Class A"

Regards
Jürgen
Click to expand...


What I know it has got and can be made, at least, to have 40mA.
But if you do not like this amplifier,
nobody is going to force you to try it.
So, I guess, you will never know, for sure .. if it is bad or good.
😀
maybe you will miss something, maybe not
but you will never know
what others previously in this topic know:
That this is a good amplifier.


Regards to germany
lineup - wont change his opinion on what is good ( better than most op-amps )
 
#58
Come on man (Lineup) I`m not your enemy I AM A FRIEND! You`re contribution to the forum is big and I have nothing against you.

I wanted to say that elektor likes to put stickers "HI END" on everything and I`m curious what makes this design to be HiEnd?

Complementary, high price transistors, output in class A... that are not arguments for HiEnd.

Wath abut OLG and OLB.

Cheers!
 
#59
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