My guess is that you are correct in your assumption that the amp is compressing the sound at louder and/or complex passages.
You say you like the sound of tubes but as with everything there are trade-offs especially at certain price points.
Congestion and compression are some of the trade-offs. Rolled off or soft/rounded bass, rolled off or veiled or smeared highs are other trade-offs. That goes for some to many solid state amps and pre-amps as well as some to many tubes.
I would highly recommend a McCormack DNA 0.5 Revision A or DNA-1 Revision. Both are solid state but have a sound that is neither tube nor solid state in their sonic signature.
There is a used DNA-1 Rev. A for sale on agon at $1900 right now at:
http://cgi.audiogon.com/cgi-bin/cl.pl?ampstran&1049503768
And I would recommend that you check out Steve McCormack's web-site (smcaudio.com) to determine for yourself the quality of such a rebuild as this.
Either amp should knock your socks off so to speak. Providing a robust and solid bass region, warm mids, and crystal clear highs without any congestion or compression at higher volume levels.
That $1900 for the amp would also allow you to purchase a very nice pre-amp such as a used Pass Labs X-2.5 or X-1 for about $2200 or a used SimAudio Moon P-5 for about the same. Three outstanding and highly-rated pre-amps that retail for $4000, $6000, and $4500 new respectively.
These two purchases alone should be enough to catapult your system into a completely different category.
-IMO
You say you like the sound of tubes but as with everything there are trade-offs especially at certain price points.
Congestion and compression are some of the trade-offs. Rolled off or soft/rounded bass, rolled off or veiled or smeared highs are other trade-offs. That goes for some to many solid state amps and pre-amps as well as some to many tubes.
I would highly recommend a McCormack DNA 0.5 Revision A or DNA-1 Revision. Both are solid state but have a sound that is neither tube nor solid state in their sonic signature.
There is a used DNA-1 Rev. A for sale on agon at $1900 right now at:
http://cgi.audiogon.com/cgi-bin/cl.pl?ampstran&1049503768
And I would recommend that you check out Steve McCormack's web-site (smcaudio.com) to determine for yourself the quality of such a rebuild as this.
Either amp should knock your socks off so to speak. Providing a robust and solid bass region, warm mids, and crystal clear highs without any congestion or compression at higher volume levels.
That $1900 for the amp would also allow you to purchase a very nice pre-amp such as a used Pass Labs X-2.5 or X-1 for about $2200 or a used SimAudio Moon P-5 for about the same. Three outstanding and highly-rated pre-amps that retail for $4000, $6000, and $4500 new respectively.
These two purchases alone should be enough to catapult your system into a completely different category.
-IMO