Dacs have very high output. All you need is a passive potentiometer. The best is a Wavac Att-s which can usually be found below £2k. I‘d advise against active preamps because they all add their own sound signature. Really good preamps are hideously expensive.All good except for the $2,700.00 for a passive preamp!!!, that’s ludicrous, "snake oil" stuff at that pricing!
Just get one of these instead for a fraction of the price, switched precision wafer board series/shunt (best) resistors and silver/gold contacts RCA’s.
https://goldpt.com/sa4.html
Cheers George