Seems like someone just posted about adding a couple Behringer 500A's to his system. I thought I would add my two cents about this level of economical amps. I just added 3 (for my three front channels) AudioSource Amp One/A's to my system.
http://www.audiosource.net/amponea.html
I am using a Yamaha RX-V2500 as my preamp and the Yamaha also drives my two surround speakers, leaving the Audiosource amps to drive the front three speakers.
I paid $199/amp and got free shipping and no tax. I run them bridged for 200 wpc for each of my three front speakers. MY mains are rated to handle up to 250 watts and my center is rated to handle up to 200 watts.
I listened to several CD's and DVD concert videos that my ears know by heart forward and backwards. I can say that these amps have made an improvement and solved a concern I had about the performance coming out of my center channel.
Overall, my music has more clarity and definition. Additionally, bass is a tad bit more defined, solid, and more present. Vocals and highs are much clearer and more evident.
For my center speaker, I had previously complained that vocals and general signals coming out of my center just did not have enough ooomph. Now, with the dedicated amps, the center has truly come to life. Vocals are much more evident and clear. I guess my amps are allowing the center to display what it is made of more so than my Yamaha was able to do by itself with 5 channels drawing power out of the Yamaha.
With dedicated monoblocks, the front three speakers are, quite simply, more alive, better defined, crisper, a little "bassier", and I am that much happier.
I have never had the experience to listen in depth to major brand name dedicated amps. However, I do know how much the popular names sell for. For me, $600 for three 200 wpc separate amps seems to have been a wise decision. There is law of diminishing returns in audio/theater purchases. I feel this low-cost strategy, and the resulting apparently very good performance, was a wise decision. When we move next year, I will probably go ahead and add 2 more for the rears, but it's not as critical for the rear speakers. I bought a $19 wal-mart tv stand with 3 shelves, one for each amp so I don't have to stack them.
Of course, reliability is still an unknown with Audiosource. Time will tell. They seem to have good cust. support and for $199 each, at least I didn't pay for a McIntosh or something of that price range. If an Audiosource dies, it's not going to impact me financially.
So, if you're looking for an economical separate amp solution, give this a look. I'll post again if anything else develops (for example, if these thinge die on my, etc.)
My system is as follows:
- Receiver/Preamp: Yamaha RX-V2500
- Amps: Audiosource Amp One/A (times 3)
- Main Speakers: Boston Acoustics VR3
- Center: Polk CSi5
- Surrounds: Polk FXi5
- Sub Polk PSW505
- Other various items (DVD, CD players, etc.)
As I am probably starting to head down that road of law of diminishing returns, I plan to quit adding to my system (at least for a few days).