Proof of signatures and status as holder in due course.

(b) If the validity of signatures is admitted or proved and there is compliance with subsection (a), a plaintiff producing the instrument is entitled to payment if the plaintiff proves entitlement to enforce the instrument under section 42a-3-301 , unless the defendant proves a defense or claim in recoupment. If a defense or claim in recoupment is proved, the right to payment of the plaintiff is subject to the defense or claim, except to the extent the plaintiff proves that the plaintiff has rights of a holder in due course which are not subject to the defense or claim.