tapedeck playback amplifier

[disco]

Any comments on which amplifier will give less THD and noise?
How about PSRR for each circuit?

[IMGDEAD]http://i67.tinypic.com/2wq9yle.jpg[/IMGDEAD]

V3 is a cascode:
[IMGDEAD]http://i65.tinypic.com/el7imb.jpg[/IMGDEAD]

 

[Eli Duttman]

You have not specified what the impedance and O/P level of the playback head are. The characteristics of the head have an enormous influence on what the "best" preamp circuitry will be.

 

[disco]

0dB recording level gives 2,2mV RMS output. +3dB should result in a 2,0V RMS preamp output. I measured 100 ohm coil resistance.