No worries on the Mac.
I own something from all the brands you are talking about. I have McIntosh, Rotel amps, and receivers in the past (still use old Rotel on my rears). I own both Klipsch and Paradigm among other speakers. I have listened to all the Klipsch heritage line.
The MC150 was a fine purchase. Mac will not wow you with any one sound quality but they are solid performers all around and have a sense of musicality some other brands lack. Well worth keeping and growing with. It will not be the bottle neck for along time. The only down side of mac is there are no cheap preamps. The matching C49 is $5,000.
For sure the speakers and maybe the preamp are holding back the system. But I think you dodged a bullet on the heresy. They are a dumpster fire of a speaker imo. If you are going the Klipsch rout save up for the Forte IV. It is a much better speaker. It actually has bass unlike the heresy. It also sounds less boxy to my ear, less sharp in the upper mids too. Maybe even give the RP8000F a try. I know it might seem like a downgrade but it sounded pretty good on the MC462.
As for Rotel vs McIntosh I find rotel brighter and harder sounding. The Mac is much more refined. The difference in amps is subtle. The speakers and room trump everything.
Hersey review with Klippel measurements.
https://www.erinsaudiocorner.com
https://youtu.be/fRku8ACgVSc
I own something from all the brands you are talking about. I have McIntosh, Rotel amps, and receivers in the past (still use old Rotel on my rears). I own both Klipsch and Paradigm among other speakers. I have listened to all the Klipsch heritage line.
The MC150 was a fine purchase. Mac will not wow you with any one sound quality but they are solid performers all around and have a sense of musicality some other brands lack. Well worth keeping and growing with. It will not be the bottle neck for along time. The only down side of mac is there are no cheap preamps. The matching C49 is $5,000.
For sure the speakers and maybe the preamp are holding back the system. But I think you dodged a bullet on the heresy. They are a dumpster fire of a speaker imo. If you are going the Klipsch rout save up for the Forte IV. It is a much better speaker. It actually has bass unlike the heresy. It also sounds less boxy to my ear, less sharp in the upper mids too. Maybe even give the RP8000F a try. I know it might seem like a downgrade but it sounded pretty good on the MC462.
As for Rotel vs McIntosh I find rotel brighter and harder sounding. The Mac is much more refined. The difference in amps is subtle. The speakers and room trump everything.
Hersey review with Klippel measurements.
https://www.erinsaudiocorner.com
https://youtu.be/fRku8ACgVSc