Need to identify a good integrated amp that can deliver high current and about 100 wrms at 6 ohms and serve as a building block for a new system...first upgrade in 20+ years. Will be running Ohm Walsh 100s3 speakers in 14 * 14 room 88 db sensitivity and 6 ohm nominal impedance. Looking at $2k max new price and open to used eqiupment too. Trying to understand what I yield for moving from say a Cambridge Audio 640A v2 to say a Portal Panache or Rega 1062 or Music Fidelity A3. Want something that I can later use as a preamp as I start to upgrade. Long term goal is for something that I will "have for 10+ years like Mcintosh, which I have lusted after for years. . Replacing old Mcintosh MA 5100 integrated which I have liked and was a gift back in high school and also some 70s SAE separates I bought in college. I'm 50 years old and listen to all kinds of music especially lots of acoustic jazz, female vocals, acoustic fingerstyle guitar, piano both classical and jazz, 70s singer songwriters and rock, (Eagles, Bonnie Raitt, Little Feat, Led Zep, Clapton) and lots of blues and jazz guitar. Open to hybrid and SS, maybe tubes although I have never owned them. I have heard them but I understand it is difficult or costly to find tubes which will drive my Ohm speakers. Live in Hawaii so I cant really hear much of anything and only 2 high end shops which are very limited so buying off the net and durability is key as there arent too may people around to do repairs. I have read about Portal Panache, various Music Fidelity, Cambridge audio, Naim and all would be bought off internet. Nait 5i sounds interesting but the wrms seems low. as did the SIm Audio Moon 1. Was thinking about the CA 840 but heard questions about the quality so I have been stuck in analysis paralysis. Using CA 740C cd player and works well.