Sennheiser ME66+power module....do I need it?

[pulinap]

Hi folks,

 

I've got a Sennheiser ME66+power module mic that my partner used for her filed work. 

 

I am thinking of selling it...unless the good folks here in SNA could convince me otherwise.....would I need in the future.....say for example take measurements....?

 

Thanks

P