MAT02, 03 Elektor preamp schematic - Page 7 - diyAudio
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Old 4th October 2008, 03:35 PM   #61
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Hi

Would really like to know more on your design? Which program did you make PCB with?


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Old 12th October 2008, 10:08 PM   #62
muflon is offline muflon  Czech Republic
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It was designed by the Eagle program. On the image there is just a betta version. I have done final version of the PCB. The construction is simple, sound is excelent.
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Old 13th January 2009, 08:08 AM   #63
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So is this a pre-amp as in RIAA pre-amp?

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Old 24th May 2009, 06:56 PM   #64
lineup is offline lineup  Sweden
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Quote:
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.
1. Cheap transistors - even less an argument for good audio

2. What's wrong with opamps - these are what we usually design up against, doing descretes

3. Some 40 mA in a preamp at least indicates a good level of Class A, which cant be too bad?

4. This is almost true. All transistor preamps work in Class A.
But the difference is at how much Class A current.
10 mA is not unusual. 80 mA is more than average. Much more actually!

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Old 27th July 2009, 07:22 AM   #65
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Is this pre-amp a line pre-amp or suitable for MM or MC cartridges?

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John
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Old 30th July 2009, 12:11 AM   #66
routhun is offline routhun  United States
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This is just line preamplifier, cannot work for phono cartridges

Routhun
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Old 24th July 2011, 11:12 AM   #67
adam2a3 is offline adam2a3  Greece
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Quote:
Originally Posted by routhun View Post
This is just line preamplifier, cannot work for phono cartridges

Routhun
Hi everyone, a friend gave me an Elector EPS 86111-2 MM MC preamp board with 86111-1/3 input selector ps supply boards.
I see triple MAT02 input and OP27 servo next to these but no single BC transistors anywhere The line that is included in this pcb is using 4ea OP27. It also has an impressive triple copper stripe power distribution on top of the board.
Any info about this preamp? Thanks, adam2a3
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Old 24th July 2011, 11:15 AM   #68
adam2a3 is offline adam2a3  Greece
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Quote:
Originally Posted by wopo View Post
Dear Samuel!

I found a schematic in the Elektor's summer issue 1994. I think this is the drawing you mentioned.

Greetings from Vienna.

Wopo

Hi Wopo, a friend gave me an Elector EPS 86111-2 MM MC preamp board with 86111-1/3 input selector ps supply boards.
I see triple MAT02 input and OP27 servo next to these but no single BC transistors anywhere The line that is included in this pcb is using 4ea OP27. It also has an impressive triple copper stripe power distribution on top of the board.
Any info about this preamp? Is this the one you have built? Thanks, adam2a3
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Old 24th July 2011, 12:46 PM   #69
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Hallo,
this is NOT what we talk about!
I am building both of them right now!
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Old 12th August 2011, 10:13 AM   #70
rajucc is offline rajucc  India
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Quote:
Originally Posted by adam2a3 View Post
Hi Wopo, a friend gave me an Elector EPS 86111-2 MM MC preamp board with 86111-1/3 input selector ps supply boards.
I see triple MAT02 input and OP27 servo next to these but no single BC transistors anywhere The line that is included in this pcb is using 4ea OP27. It also has an impressive triple copper stripe power distribution on top of the board.
Any info about this preamp? Is this the one you have built? Thanks, adam2a3
adam2a3 I have the full article in pdf format.But dont have pcb layout,do you send me a scan copy of PCB layout ?
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