Tested.  Working.   Sounds great!

This sequential serial number match pair of Sony SS-T900 speakers has been tested and is in perfect working order. They are  amagnetically shielded type speaker set with a maximum input of 120W. The speaker has a rectangular shape and is black in color. It is compatible with Sony brand products and has a 2.0 channel system configuration. The audio inputs are compression jack and the connectivity is wired. The speakers features a wallmount option and has an RMS power of 120W. The impedance is 8 Ohms and ware made in Korea.

Note that there are some white scrapes on the case but from the front they look brand new. (See pictures)