Although its not a tower, its not a bookshelf speaker either. Its a pair of PSB 500 that I purchased used for $75. I was very curious about getting a PSB with a woofer bigger than 6.5" The 500s use an 8" woofer and I must say that they do sound sweet. Great for most every genre of music with the exception of music containing pipe organ or ultar low bass found in RAP. Imaging is amazing.