Acoustic Research mst speakers in great condition…… They will be double boxed, insured and sent worlwide… Thank you for looking. Auctiva Offers Free Image Hosting and Editing. Auctiva gets you noticed! Track Page Views With. Auctiva’s FREE Counter. The item “Acoustic Research mst speakers in great condition” is in sale since Wednesday, November 01, 2017. This item is in the category “Sound & Vision\Home Audio & HiFi Separates\Speakers & Subwoofers”. The seller is “bigears-audio” and is located in Penzance. This item can be shipped worldwide.