SONY TA-N9000ES


I have a Sony receiver STR-DG1000 and the Sony amplifier TA-N9000ES. I read here:
http://www.audioreview.com/cat/amplification/amplifiers/sony/ta-n9000es/PRD_116164_1583crx.aspx

that the amplifier will provide great sound either at 5-channels or 2 BTL.
After I made the connections following the manual instructions the sound level and sound quality are exactly the same as before without the TA-N9000ES. I switched to BTL mode and I've got the same quality. I am using B&W Series 600 speakers.
Am I doing something wrong? Is the amplifier made like that? My receiver doesn't need that amplifier? Is the amplifier broken even when I get sound from the 5 channels? Any advise, opinion will be appreciated.
Thank you.
thx2468
I'm with Kal - why big differences? The extra power you get in BTL mode may be overkill for your small monitors - you may be already pushing the limits of what you can eek out from them. Speakers compress when driven really hard and will start to sound dull - up to a point adding power is helpful especially in the bass response (but if you use a powered sub then you may not notice this) and then it quickly becomes diminishing returns on small monitors.
Possibly but (1) you will have to figure out some way to balance the two amps and (2) there's little gain (!) in doing so.

Kal
I would expect the sound quality to be similar as they are both Sony pieces. Utilizing an outboard amplifier with a receiver essentially turns the receiver into a processor. Unless there is a massive amount of power difference between the 2 units there will be little difference in volume if I am understanding you correctly. Be cautious when looking to bi-amp any of the speakers. Check the power rating on the B&W's.
I own the TA-E9000ES and TA-N9000ES. I don't think you need to run biamp configuration as your TA-N9000ES would provide sufficient power to 5 channels in your 600 series B&W speakers. I believe your Sony receiver has outputs to hook up your TA-N9000ES.