Hi all, My first post so I need educating....thanks. My setup is as follows:Arcam A28 AmpArcam CD 17 CD PlayerArcam T32 TuberKef IQ70Kef IQ30 (unused) I mainly listen to music but sometimes I connect my TV (through the headphone out on TV) to the amp for decent sound on TV. Split between music/tv is about 80/20. I know that this system is a Stereo setup and not ideal for movies. I feel that I don't get "shuddering bass" but at the same time maybe that is how the music is intended to sound. I plan to buy a Sonos Connect AMP to drive the Kef IQ30's. However, as my AMP does not have bass management should i consider buying a AVR amp instead of using the Arcam FMJ A28 amp. So I would need to:- Buy a Center Speaker- Buy a Sub Woofer- Buy a 5.1 AVR I plan to buy a Sub anyway so that is cost neutral My budget would allow me to purchase the following- Kef 200C Center Speaker- Denon AVR-X2100 I am not really into surround sound but I am very happy with 3.1...maybe later I can go to surround So my questions are:1. For MUSIC, would I be mad to change my Arcam FMJ A28 with KEF IQ70 and new Sub (very good Stereo 2.1 system) for a DENON AVR X2100 with KEF IQ70 and new Sub and new center speaker (KEF 200C)2. For MOVIES, would my Arcam FMJ A28 with KEF IQ70 and new Sub be perfectly fine for watching movies for someone who watches movies maybe once every two weeks3. Any comments on pairing SONOS Connect AMP with my KEF IQ30's4. If I stay with Arcam FMJ A28 for music only DO I NEED AN SUB WOOFER?5. Should the KEF IQ70's be producing enough bass for music only?6. Is my stereo system fundamentally missing an SUB WOOFER?7. If i bought an SUB WOOFER, would it distort music with too much bass?8. FINALLY, please recommend a SUB for to go with A28 and IQ70's.....budget 500-700 Please help with recommendations. thanks,Tom.