Will I improve the qualitry of sound?

Nope, 70watts to 130watts, not a big difference. Whats your preamp? That may dictate more of the sound then the amp at this point. If you have all rotel, you will still get "rotel" sound despite getting a bigger amp.

Excellent previous posts. I doubt you will notice too much of a differnce. I'd consider a 200w RB-990 if you want to upgrade in the Rotel family or try a different amp. Some lower powered amps may sound more musical. Just recently bought a dual mono 60w. Rotel RB-960BX amp. What a beautifully built amp. I'm waiting on some new spk. wire (Linn K400) to fully evalute it potential. But, I'd bet this older amp just might have a nicer sound than a newer single transformer Rotel amp.

Thanks fellows. Nuguy suggested I list my other components. Here they are: Preamp: Rotel RC 1070. Amp: Rotel RC1050. Tuner: Rote; RT 02 CD: RCD1072 and B&W 805s speakers. If this listing illicites any further comment I would appreciate it. JNorth

Wow! Almost 3dB increase in power and no difference? What happened to better control, more headroom, less power supply strain, less chance of shifting the Q point of the transistor bias, less heat conduction from components, less power supply sharing percentage, etc.

You have to admit, a 70 wpc amp that can drive "this" load when driven by a 130 wpc is like "hot knife on butter". it is just cruising if you know what I mean.

Please, educate me! Why is it that a 70 wpc amp will not matter compared to a 130 wpc of the same amp at say, for the purpose of simplicity, 8 ohms purely resistive load and not considering any phase shift or lagging of the preamp signal driving it? Not a pissing contest but I really want to know why?