Greetings, I have the KRX3 sub-receiver for sale with the following filters. KFL3A-FM, KFL3A-6k, KFL3A-2.8k, KFL3A-2.1k and KFL3A-1.8k. Also included are the Subout and subin boards, all documentation and installation manual. Please contact me directly at: w8crh at comcast dot net, for price. Thanks for reading es VY73' Steve W8CRH SEMPER FI