DAC for arcam avr 300 + ae radiance 1

[Babaich2005]

Hi! Need your help. Trying to find a dac for my arcam avr 300 + ae radiance 1. Already tried fiio k13 r2r (garbage), aune x8 with different op amps including burson v7 (maybe it'd be ok for another system, but with my it lacks bass, texture and resolution), audio alchemy dac-in-the-box (more bass and texture, but very neutral non-emotive sound). Once tried streamer silent angel bremen b2, sounds much better due to its preamp, i guess, but lack resolution. Maybe i really need a preamp, not dac, idk. Any advice is welcome.