I believe your music could be improved by upgrading your interconnects and maybe speaker cables. Also if youre main AC line going to your Porter Port is not a dedicated line I would most definitely recommend that first. Ive always found it a major pain to remove a hard wired AC power cord, recut the hole, install the proper connecter etc. If there is room to do the job, and it could be done neatly, when you go to sell the amps because of the modification you will probably have to sell for less dollars. In the long run Id purchase a new or used amp instead of taking out the hard wired power cords.