thank you for your reply sir.
1. room acoustics
- 2'x4' absorption panel at front wall (behind of each speaker)
- 2'x4' diffuser of each side wall
- ceiling corner bass trap
- some acoustic panel at rear wall
- room size is rather small .. 10'x10'
- speaker pull out 1.5' from front wall and side wall, slight toe in
2. no power conditioner
3. bass is enough without sub
i have heco sub, but seldom use coz some song low freq may overblown in my small room
4. cables
- speaker cable use cardas quadlink 5c
- pre to power - interconnect nordost flatline black knight
- cd player to preamp - use chord clearway
- rega dac idling not in use