[Elecraft] K3 PRE function question

[Randy Lake]

This is a pretty simple question regarding the K3 PREamp (not PR6). If I do
not have the PR6 does the PRE on the front panel help with RX on 6m/2m (int
module) or does it merely increase noise?
Thanks

-- 
Randy Lake N1KWF
73 Gunn Rd.
Keene,NH