First off, I have no experience with LM amps yet. Secondly, it seems as if no one here has shown real experience with a properly updated MC225 which surprises me, so I would like to throw in my two cents.
I have used a Terry DeWick updated Mcintosh MC225 with upgraded Klipsch Chorus II or Tannoy dual concentric for several years, and the sound is sublime. The amp was completely rebuilt from the power supply thru the signal chain and I added some Cardas RCA input connectors. I experienced a full bodied, multidimensional, and lifelike presentation of the music that stays very true to the recorded material with this amp in the mix. I love it! The amp is dead quiet unless you stress it with extreme volume levels or with inefficient speakers. It is well know among vintage Mc tube equipment enthusiasts that McIntosh and your Klipsch Cornwalls make beautiful music together. Mc225 has more resolution from the bottom to than found with my Terry DeWick updated McIntosh MC 30s(which are incredible amps no doubt). This is probably because of the solid state rectified power supply in the MC225.
Overall, there is a very well balanced sound from this little amp and a lifelike presentation of the music. I love the sound of the Westinghouse 7591 output tubes, one Telefunken smooth plate ECC83 in V1, Military Mullard CV4003, and RCA 12bh7. I have a hard time believing you wouldn't be impressed with an updated version of this amp with a good set of these vintage tubes. Hard to go wrong with properly restored vintage McIntosh for pure musical enjoyment IMHO, as always YMMV. Check out Jeff Day's blog for more good info on vintage McIntosh.
I have used a Terry DeWick updated Mcintosh MC225 with upgraded Klipsch Chorus II or Tannoy dual concentric for several years, and the sound is sublime. The amp was completely rebuilt from the power supply thru the signal chain and I added some Cardas RCA input connectors. I experienced a full bodied, multidimensional, and lifelike presentation of the music that stays very true to the recorded material with this amp in the mix. I love it! The amp is dead quiet unless you stress it with extreme volume levels or with inefficient speakers. It is well know among vintage Mc tube equipment enthusiasts that McIntosh and your Klipsch Cornwalls make beautiful music together. Mc225 has more resolution from the bottom to than found with my Terry DeWick updated McIntosh MC 30s(which are incredible amps no doubt). This is probably because of the solid state rectified power supply in the MC225.
Overall, there is a very well balanced sound from this little amp and a lifelike presentation of the music. I love the sound of the Westinghouse 7591 output tubes, one Telefunken smooth plate ECC83 in V1, Military Mullard CV4003, and RCA 12bh7. I have a hard time believing you wouldn't be impressed with an updated version of this amp with a good set of these vintage tubes. Hard to go wrong with properly restored vintage McIntosh for pure musical enjoyment IMHO, as always YMMV. Check out Jeff Day's blog for more good info on vintage McIntosh.