You got a number of things going on here that are contributing to your dissatisfaction. Or should I say preventing your satisfaction?
While McIntosh are generally better than Yamaha, separates are always better than receivers, so that is a top contender for upgrade/replacement.
Klipschorns were great back in the day when nobody knew how to make amps sound good with more than a few watts. You can do a lot better. For less. And with much greater placement flexibility.
NAD, can do a lot better. You don't need hundreds of watts. Nobody does. 30-60 will do you just fine. Here have a look- read the comments, and realize that Melody is a 50 watt tube amp. https://systems.audiogon.com/systems/8367
You can do a lot better than what you have now, and have a whole system for less than even a pair of K-horns.
The greatest value in amps is a good tube integrated amp like you can get from Raven for about $3-4k. https://www.ravenaudio.com/product/nighthawk-mk3-tube-amplifier/ This will be so much better than what you have now it will be staggering. You will not be complaining about lack of fidelity- or volume either! Hundreds of watts simply are not necessary, not unless you want to use really inefficient speakers.
Your Sony source, saved the worst for last?
Good to hear you prefer a turntable. This just means you will want to be thinking about a phono stage to go with the integrated. But that is getting way ahead of ourselves. What we need to know now is budget, and long term plans? In other words are you looking to buy a more or less complete system now, or use this as a base and buy components as and when you can afford?
While McIntosh are generally better than Yamaha, separates are always better than receivers, so that is a top contender for upgrade/replacement.
Klipschorns were great back in the day when nobody knew how to make amps sound good with more than a few watts. You can do a lot better. For less. And with much greater placement flexibility.
NAD, can do a lot better. You don't need hundreds of watts. Nobody does. 30-60 will do you just fine. Here have a look- read the comments, and realize that Melody is a 50 watt tube amp. https://systems.audiogon.com/systems/8367
You can do a lot better than what you have now, and have a whole system for less than even a pair of K-horns.
The greatest value in amps is a good tube integrated amp like you can get from Raven for about $3-4k. https://www.ravenaudio.com/product/nighthawk-mk3-tube-amplifier/ This will be so much better than what you have now it will be staggering. You will not be complaining about lack of fidelity- or volume either! Hundreds of watts simply are not necessary, not unless you want to use really inefficient speakers.
Your Sony source, saved the worst for last?
Good to hear you prefer a turntable. This just means you will want to be thinking about a phono stage to go with the integrated. But that is getting way ahead of ourselves. What we need to know now is budget, and long term plans? In other words are you looking to buy a more or less complete system now, or use this as a base and buy components as and when you can afford?