Glai,
I owned the BAT 51SE for awhile and currently own the Audio Research REF 3. The short answer is that the REF 3 was quite a bit better in my system. The REF 3 has more body and presents the soundstage much better than the 51SE. The BAT did have better dynamics and a bit snapier transients, but at times tended to sound a bit more compressed. Some have mentioned that the BAT has an impeadance mismatch with Mark Levinson amps. I dunno, but it may explain the sound characteristics I experienced. The REF 3 does everything very well and is quite a bargain. There may be better line stages out there, but for the money you would be hard pressed to find one. My current system is Avalon Eidolon Visions, Mark Levinson 33,Audio Research REF 3, All cabling is Purist Audio Dominus.
I owned the BAT 51SE for awhile and currently own the Audio Research REF 3. The short answer is that the REF 3 was quite a bit better in my system. The REF 3 has more body and presents the soundstage much better than the 51SE. The BAT did have better dynamics and a bit snapier transients, but at times tended to sound a bit more compressed. Some have mentioned that the BAT has an impeadance mismatch with Mark Levinson amps. I dunno, but it may explain the sound characteristics I experienced. The REF 3 does everything very well and is quite a bargain. There may be better line stages out there, but for the money you would be hard pressed to find one. My current system is Avalon Eidolon Visions, Mark Levinson 33,Audio Research REF 3, All cabling is Purist Audio Dominus.