In order for us to help you, we need to know your intent. Are you looking into a Home Theater system or just a Stereo receiver. Do you have a phono turntable and listen to a lot of vinyl? If you are looking into using the receiver with your TV, what type of TV do you have? Is it a flat panel TV with HDMI inputs? Do you have a Blu-ray DVD player? What kind of speakers do you have? If you are planning to go the Home Theater route, you should have at least a 5.1 speaker configuration -- front right and left, front center, subwoofer and surround right and left. A 7.1 system would add either rear or presence speakers; a 7.2 system would add a second subwoofer. Another consideration is the need for wiring to your surround and rear speakers. If you can't hard wire them, you'll have to come up with a wireless configuration.
As others have said, your existing equalizer is not appropriate for a modern system. Although standalone modern parametric equalizers are available, they really aren't necessary for the typical home theater environment.
Regarding receivers: don't limit yourself to Pioneer when you make your receiver decision. Yamaha and Denon make excellent consumer grade receivers. There are many other higher end receivers available in the marketplace. Realize that very few modern receivers have a built - in phono preamplifier, so you either need a standalone preamp or a turntable with built-in preamp.
As a last thought - go over to AVSForum and do some research there.
Family Room: Sony KDFE-55A20 55" LCD RPTV; Yamaha RX-V663 AVR. Paradigm speakers - Focus fronts, CC170 center, PDR-8 subwoofer, Atom surrounds, ADP rear center; TiVoRoamio Plus, LG BH200 HD DVD/Blu-ray player via HDMI to AVR
Bedroom: Vizio 42" 3D TV, Pioneer VSX-521-K AVR, Panasonic 3D DVD player, Energy Take Classic 5.1 speakers, Roku 2 XD, TiVo Premiere, Insignia HD radio tuner, Toshiba HD DVD player