Do not feel the Sony will come close to seeing what these speakers are capable of. I paired these with a Rotel 990 series power amp. Match made in heaven with tremendous low end grunt. The 990 had a huge power supply with great power into low impedance loads.
It was always amazed how the 5si's, using two generic 6 1/2" drivers, could handle all that power and produce such palpable bass down to 30hz!
It was always amazed how the 5si's, using two generic 6 1/2" drivers, could handle all that power and produce such palpable bass down to 30hz!