Now these are some serious speakers. While they don't hold a candle to their bigger brother, they still produce a fine sound signature. The AR91 are floor standing speakers in a 3-way acoustic sealed design. It features AR's 12" woofer, it actually measures out to be 11", dome midrange and dome tweeter. If you're looking for big and detailed sound, these are a fine pair of speakers. They are pretty big but, not super large and they are well designed having that real wood veneer and unique shape. The grills are also bowed out at the bottom, so they are quite elegant to look at with some serious sound behind them. The woofers have been freshly redone and still need to be broken in. The downsize of these AR91s are that they are power hungry. They aren't really efficient and they love clean dynamic power. So, no they aren't really tube friendly unless you have some serious tube monoblocks. They are also 4 ohms and need something with a good trans
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