hello sir,

am shalini from india. i own a pair of 4 way floorstanding speakers of JBL Northridge E 100 series. Power handling is 125 watt continous and 500 watt peak. Nominal impedance is 8 ohm. They have two 10 inch bass drivers alongwith mid and tweeter drivers. Plus bass reflex port at the bottom. These speakers are powered by my Harman Kardon 670 integrated amplifier. the amplifier gives 2x75W, 20Hz-20kHz, into 8 ohms, at 0.09% THD or less. And my cd player is Sony. i have employed Monster brand cables for connections. The sound of my system is good. The application of the system is exclusively hi-fi stereo. My query is as follows-

How shall i upgrade my existing system? I want my stereo sound punching and theater/live like but also clear and crisp. Have i to add any components? Do i need to buy professional speakers to make them sound as i want to. Please guide me. Please treat the query urgent. thanks in advance.