It is fine as is. If you have not done so, get some decent speaker cables and interconnects to go with it.
The next time you get the upgrade itch start with the speakers.
The 602s sound great when used with good sources and power by a good amplifier. Having said that, the CD and Amp are good enough that you will notice a further improvement with even better speakers.
The next time you get the upgrade itch start with the speakers.
The 602s sound great when used with good sources and power by a good amplifier. Having said that, the CD and Amp are good enough that you will notice a further improvement with even better speakers.