DAYTON AUDIO DATS LA Speaker Testing System - reviews - There are 2 reviews.

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The product works as expected, however expect noisy output (likely doesn't affect results) and expect offset (which may affect results in very softly suspended speakers). Looking forward to a fix, hopefully w/o having to send-in the unit

Fast and accurate measurement
Good user manual. Easy measurement process. Software controls the entire process. Measurement results are available in a file, allowing for further processing in other programs. The device itself is well-made. The only minor issue is the power cable with an American plug. But since it's a standard PC cable, you're sure to find one at home.