The analog Devices 1955 DAC has a nice smoothed detailed presentation. It's a great chip however the ESS Sabre chips are better.
I've had a Lavry Engineering DAC with the 1955 and because of my engineering connection,s an Analog Devices engineering demonstrator. Both sounded terrific.
Also own a PS Audio Stellar Gain Cell DAC and OPPO Sonica with the ESS Sabre implementation. The ESS Sabre chip is generally a better Delta-Sigma foundation.
None of them hold a candle the PS Audio DirectStream DAC, and the Holo Spring 3 KTE is even better yet. The DSD DAC's FPGA chip implementation has substantially great capability for all the crazy filtering PCM data requires.
Listening & measurements have shown the May is better but VERY narrowly on the margins. It's biggest benefit is ditching all the crazy complicated filtering since it's a 24 bit R2R DAC. Talk about digging into detail and immediacy of presentation!
If you're buying a Spring 3, only get the KTE version with it's hand selected DAC module and USB interface from the MAY. Also the built on preamp option is terrific as the max gain is only 6 db, enough to compensate for the 6db drop of DSD over PCM specification.