Amplifiers:A Keeper for Life. Do you know of one ?

Luxman M-4000. Sansui Definition Series. In the last couple of years, I have managed to obtain Luxman T-110, C-1000 & M-4000. Am shopping for the M-2000 and M-6000 to complete the collection. Also plan to keep my Sansui BA-5000, 3000, 2000 and TU-9900 forever. Am shopping for the CA-5000 to complete this collection.

The adcom gfa-555 is a solid built amp.

Lamm ML2.

Sizemore - The Ampzillas varied a bit. The original was basically an updated Dynaco 400, both having been designed by James Bongiorno. I have the last version, the GAS 500 which was designed by Andrew Hefly. I would put this 30 year old beast up against any modern SS amp with complete confidence. Your Grandson is a keeper... NEVER part with it. And by all means drive it into a 1 Ohm load if possible. It will sing even sweeter. Bongiorno's word for it was "tubistor".

No mention of BAT 75SE/150SE from anyone?

I have owned nearly 20 amps, BAT is the one that stopped me from upgrading even though I still buy interesting gears to try sometimes and always end up selling others.

I did not count, but notice KFL has more tube than SS?