balanced x-Preamp

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Can this X-Preamp be made to work just as well with Pchannel IRF devices in place of the ZVP3306 (since I am not able to obtain them)? What are the changes that need to be incorporated? Can we have a schematic of this as well? Perhaps, this will generate more interest from everyone to couple this preamp with the Aleph-X amps.
 
Hi Sam,
first you have to change the p-channel fet of the currentsource to IRF 510 (610) because i dosn´t took care about power dissipation.(Too high for the small zetec device).
The input diffpair could be replaced by IRFD9110 (9120), but as the input capacitance is higher the distortion will rise.(of course you can take a similar p-mosfet with low input capacitance.

Bye Andreas
 
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