I recently upgraded from a Sony BDV-E370 blu-ray system, to a Pioneer VSX-330 AVR. I used the speakers currently in place, with a view to upgrading these in due course. Since upgrading, I've noticed that the actual sound being produced by the speakers isn't as good (volume or clarity) using the new AVR. Therefore I'm looking to hasten the speaker upgrade. However, I'm not sure what difference I'll see from speakers I've seen advertised. The current centre speaker is a Sony SS-CTB101... Full range acoustic suspension Magnetically Shielded 30 mm × 60 mm cone type Rated impedance 3 ohms The current surround speakers are Sony SS-TSB101... Full range Bass reflex 55 mm × 80 mm cone type Rated impedance 3 ohms The BDV-E370 amplifier specs included... POWER OUTPUT (rated) FL/FR: 108 W + 108 W (at 3 ohms, 1 kHz, 1% THD) POWER OUTPUT (reference) FL/FR/Centre/SL/SR: 142 W (per channel at 3 ohms, 1 kHz) I've seen a couple of sets of speakers, as follows... Denon SYS2020 (all 5 speakers are the same spec) Full-range 1-speaker Closed box 8 cm cone full range x 1 Input impedance 6 ohms Max. input 100 W (IEC) 200 W (PEAK) Frequency range 100 Hz – 20 kHz Pioneer S-HS100 Surround 7.7cm cone type (full range) Closed enclosure Impedance: 6 Ohm Frequency Range: 100 - 20,000 Hz Sensitivity (2.83V/1m): 82 dB Maximum Power: 150 Watt Magnetically Shielded: yes (front) / no (rear) Centre 7.7cm cone type (full range) Closed enclosure Impedance: 6 Ohm Frequency Range: 90 - 20,000 Hz Sensitivity (2.83V/1m): 83 dB Maximum Power: 150 Watt The VSX-330 specs include... Rated power output Front, Centre, Surround 105 W per channel (1 kHz, 6 Ohm, 1 %), 100 W per channel (1 kHz, 6 Ohm, 0.7 %) Total Harmonic Distortion 0.06 % (20 Hz to 20 kHz, 8 Ohm, 50 W/ch) Guaranteed speaker impedance 6 Ohm to 16 Ohm So, essentially I have 2 questions... Will a speaker upgrade likely improve my listening experience? (i.e. are the current speakers inadequate? Is the inadequacy due to using 3 ohm speakers with an AVR which is expecting 6 ohm speakers?) Which of the 2 options of Denon v Pioneer would be my best choice?