Brand New Genuine QSC KW122 Amplifier WP-212212-TS. This is the ferrite version for speakers made from March 2013 or newer (serial numbers 0313xxxxx or newer, GKCxxxxx or newer).
***Please provide your original amplifier serial number in the notes section of your order. QSC requires this to fulfill the order. Leadtime to ship to you is about a week, but this can be expedited if needed.