Yamaha HS7MP Factory Matched Pair Of HS7 Studio Monitors (Pair, Black) - 6.5inThe HS Series embodies the design philosophy on which Yamaha has long insisted for its studio monitors, and is now available as a special paired model that uses selected volume parts. The paired model series bears the designation of MP (Matched Pair), and MP stickers are affixed to the back of each unit. Manufactured at the same time and with paired serial numbers, the HS MP models can play a valued role in your recording, mixing, and mastering work.