As noted above, well tested, low microphonic tubes are required in a phono amp. better tubes can help, e.g. Siemens of Telefunken, but an 834p will never sound detailed or clear, at least, not without extensive modifications (with which I have no experience.) Lush and smooth, yes (in my system, too much so, just as you suspect.) But you have ss amplification, maybe it balances out. An 834P is a good place to start, but looking at the rest of your system, it is not up on the same level.