Benchmark LA4 preamp | CODA #8 amp
CODA 07x preamp | Benchmark AHB2 mono
Benchmark LA4 preamp | Benchmark AHB2 mono
CODA 07x preamp | CODA #8 (though CODA #16 would be better)
Schitt Freya+ tube preamp | Benchmark AHB2 mono
CODA 07x preamp | KRELL Dou 175XD amp
Benchmark LA4 preamp | KRELL Duo 175XD amp
All of the listed combos were great. My to the grave combo I have in the office is the Benchmark LA4 preamp + AHB2 monos. I still need to buy a preamp and amp for my Livingroom system. Chances are it will be the LA4 preamp with a KRELL DUO amp (or CODA #16).
I sold all of the gear listed above except the LA4 and AHB2. I bought and sold the AHB2 amp 4x before I decided to use them permanently in my office.