NE5534 hacking (comparing input stages)

[ash_dac]

Hi,

http://www.diyaudio.com/forums/showthread.php?postid=706907#post706907

The NE5534 internals allow the possibility to compare FET, degenerated, and un-degenerated input stages. I suppose a MOSfet input could be tried aswell. I want to build the input stages on boards that can be slotted into an extra 8dip socket.

Could anyone recommend a good PC based 'scope package ?

 

[rtirion]

PC based scope

Virtins

You can try before you buy.

Or better yet, scrounge ebay for a nice Tektronix 465B
and some decent probes. You will not regret the investment.

 

[lineup]

The NE5534 internals allow the possibility to compare FET, degenerated, and un-degenerated input stages.
I suppose a MOSFET input could be tried as well.
I want to build the input stages on boards that can be slotted into an extra 8 DIP socket.

Could anyone recommend a good PC based 'scope package ?

Hello!

I attach a very much simplified schematic of the world famous NE5534.

Actually would be possible, and not very difficult to build a good
Discrete NE5534 Clone Amplifier.

Such a clone could use for example 80 Volt transistors ( or 100V )
to make the max Voltage Supply +- 40 Volt or more!

Lineup Audio Lab