Work great! Connections are raw cable that go into clips on the Sterio's speaker output. There is some slight smudging on one of the front covers. I'm sure that could be cleaned, but having never done that before I don't want to ruin it. It's the speaker on the left. You can hardly tell in the pic.
 
Type
1 way, 1 speaker system

Speaker(s)
 FULL RANGE
 10cm (4 ?) twin cone type (6?)

Impedance
6?

Input power (IEC)
20W (Max)

Output sound pressure
 83dB/W (1.0 m)

Frequency range
 51Hz to 23kHz (–16dB)
 83Hz to 22kHz (–10dB)

Dimensions (W x H x D)
139mm x 227mm x 136mm
(5 15/32" x 8 15/16" x 5 11/32")

Mass
1.3kg (2.9lb.)