I bought a used Moon 700i. The single chassis is 2 mono amps and a pre, all separate power supplies, short connection paths internally. Only analog.
Look used if you like the sound of certain brands. Patience, and you will find your gear.
I bought 2 pieces from The Music Room. They inspect the gear, take good pictures, 30 days to return, 90 days warranty on used.
My Tambaqui, Grimm MU1 and Treo CTs were all used.
I bought new cables: Sablon and Fidelium cables over multiple years.