How do I know if I need an amp?


My system is as follows:

Marantz SR8200 AV Receiver
Totem Mites bookshelf speakers
Totem storm subwoofer
Onkyo DX-C330 Analog ouput disc changer

I've got the speakers wired directly into the sub and treat the bookshelfs and sub as "large main, left and right" in the receiver's output setup.

My living room is quite small, I listen to the system from about 8 feet away on the couch.

What kind of changes to listening quality could I expect from buying an amplifier for the system at this stage? I don't plan on buying new speakers anytime soon, so I am more interested in the incremental clarity that I could achieve over a need for any additional power.

I'm not an avid movie watcher, so I wonder if a 2 channel amp would make more sense, though the marantz PM5003 I saw ($600 is about my price range) only puts out 40watts, whereas my speakers are rated up to 80 watts, and the receiver I have now puts out 120watts.

Is there a big quality difference between the SR8200's 120w per channel and a stand alone amplifier's 40watts? Would a 120w amp, used in a stereo set up, make a big difference?

Thanks
manbehindthcurtain
given that you have a two channel set-up, i'm not sure why you need surround sound--it seems to me that you should be listening to each source in (2ch) stereo. that being said, i concur with the foregoing that you'd be better served by ditching the avr and going to either an integrated or remote-controllabe seperates such as the above-recommended adcoms. you would then connect all your sources--cable, dvd, cd--directly to your integrated or preamp.
when You ask "when"...it is clear what you currently own,is
failing to satisfy, otherwise, the thought would never enter
your mind."The bloom is off the rose"?IMHO that is.

Love Your Music!
Why do you think ditching the capability for surround sound is a good idea? Because I am treating the bookshelfs and sub as mains together?

Ultimately I would like to move towards a home theater setup that will also do stereo. I understand though that the bass on the Mites is limited. I'm starting to feel like getting the Mites was a mistake, because theyre too nice to relegate to surrounds, but not big enough to power stereo listening.

Would something like the Marantz MM8003 provide a bridge to future growth in a home theater setup, but still provide power for the mock "surround" setup I have now?
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Bob, Can you explain what you mean by "high passing" the Mites (from an execution stand point). I assume you mean to reduce the frequency levels they play - can this be done via my receiver?

I am gathering you recommend that I hook the sub directly up to the receiver as a "sub", and do the same with the fronts. How do I "high pass" the mites?

I want to also thank everyone for their help. I have a lot of fun with this, there is so much to learn, and this site is a great resource especially for us newbies. Thanks!