CDP or DAC for $4000 budget


Hi friends,
I intend to upgrade all of my system, speakers will be Marten Bird.
My taste is neutral, soft, treble should not be so high, bass soft or enough.
Could you please suggest some CDP or DAC (used) for $4000 budget? By the way, please suggest an amp to run Marten Bird.
As I study from the Internet, there are some candidates:
1. MBL 1511 version D + 1521
2. Emm labs CDSA SE
3. Metronome CD 1 (Tube CDP)
4. Einstein The Last Record Player
5. Audio Aero Prestige Signature
6. Audio Aero capitole ref se
Thank you so much!
128x128silversong

Showing 1 response by zd542

Do you plan on listening to anything before you buy or are you just pick something at random? If yes, can you list all the brands that you have access to, and the rest of your system?