PCM56P with tube output stage non oversampling dac opinion

Hello,

I have a pair of PCM56P and I think I will try to build a non oversampling dac with tube output stage (6sn7 or ECC82 or ECC88).
I found interesting schematics at http://www.zeuslab.newmail.ru/pure_III.htm
http://audiolab.hp.infoseek.co.jp/ts/audio/dac01/dac01.pdf
http://members.home.nl/triode.dick/dacuitgang.html

I have an interesting schematic of thunderstone audio for tda1543 but i dont know if it could be used with pcm56.

Does somebody have an opinion on PCM56 ?

Thank you.

Pascal.