I am a 2-channel person first and foremost but getting the RAAL VM-1a tube amp and the RAAL SR1a earphones gave me 2-channel minus the room. It is an incredible listen and each night when I turn my 2-channel systems off and put the earphones on for late night work, I do not feel I degraded the listening experience. With all other phones it was not as good because of my 2-channel bias.
I have purchased the VM-1a amp and Sr1a 2x now. I sold it thinking I would do something else, and it was a big mistake.
Today, the SR1a can be run on low powered 2-channel amps unlike the past where you needed 100+ watts. I also use my used $400 20-watt Schitt Aegir v1 as a secondary driver for the SR1a.