Have you taken a look at the very unique Black Ice (Jolida) Glass FX Tube DAC?
I have one when it was still being produced by Jolida, and it has the stage one upgrades (Resistor, diode, capacitor and tube upgrade. Increased definition, tighter bass, more focus in the midrange, and more body and holographic image).
I’m feeding it with a Cambridge Audio DXD CD Player and the sound is magical!
The DAC portion features a Burr-Brown 1795 TI chip, and the analog amp uses two 12ax7 tubes for warmth. DSD clocking is based on the Savi Bravo SA9227 asynchronous chip.
I listen to a lot of acoustic material (Jazz, chamber music, new age) with some old school Jazz-Fusion thrown in and it’s always a revelation on just how much sonic material is buried in a CD!