Can you use other websites like AudioAdvisor and MusicDirect? If so, it may open you up to some other quality choices.
The Yamaha P5000S is described on the Yamaha Website as a 500 W/ch. "Club Series" amplifier. It's a Pro amp made to play really loud in a club environment. Smooth treble performance for acoustic and Indian Classical music may not be it's forte. Admittedly, I have never heard that amp. However, I personally would not be pairing that Yamaha amp with a pair of quality audiophile floor standing speakers. It may work and it may be great, but it may also be hard and fatiguing.
BTW, I'm not making any judgement on the amp because I've never heard it. Just saying that the amp might not provide the type of sound you are hoping to achieve. How does it sound with your current speakers?
The Yamaha P5000S is described on the Yamaha Website as a 500 W/ch. "Club Series" amplifier. It's a Pro amp made to play really loud in a club environment. Smooth treble performance for acoustic and Indian Classical music may not be it's forte. Admittedly, I have never heard that amp. However, I personally would not be pairing that Yamaha amp with a pair of quality audiophile floor standing speakers. It may work and it may be great, but it may also be hard and fatiguing.
BTW, I'm not making any judgement on the amp because I've never heard it. Just saying that the amp might not provide the type of sound you are hoping to achieve. How does it sound with your current speakers?