This is a YAMAHA STAGEPAS 1K. I only tested it briefly after purchasing it, and then I immediately bought the mkⅡ, so I haven't used this one much and have kept it in storage. The feel isn't much different from the mk2, but I felt the 1K had the best sound quality by far in the Stagepas series. I'd like to sell it while it's still in good condition. Included accessories are the original soft case, instruction manual, and power cable. Please refrain from price negotiations. Please consider purchasing it.