Thank Q for the info. This morning I met a PA technician & a Keyboardist.I told them my problem and they both gave the same answer.! They said I should have used a Reference or Near Field monitor instead of the Impulse652.According to them, the 652 is more like a speaker for listening to CD music or public addressing and is NEVER GOOD for piano/keyboard.Few good options are the Alesis M1 active reference, Event reference or Yamaha MSP active.I have read lots of review on reference monitor recently and I am getting confused.I want something good for piano/keyboard and singing so what would you guys suggest?


best regards
novice wayne