For sale to Linn enthusiasts, especially Keilidh/Ninka owners! Approach Klout performance with four (4) Linn LK 240 monoblock amplifiers, each fitted with Linn Aktiv cards, two amplifiers have the Treble cards, other two with the Mid/Bass cards, excellent performance with nearly holographic soundstage, excellent condition, $800 each or $3000 for all four Cards can be removed for passive mode