The TB-50 Tube Phono Equalizer is a vacuum tube hybrid phono equalizer developed specifically for DS Audio optical cartridges.
JUNE 8, 2026
"Here, at Vienna 2026, I knew what to expect–a big horn system that didn’t sound like a big horn system. That’s what I got, and it was superb."
"The final ingredient for this impressive system, of course, was the Döhmann Helix One Mk. III turntable–with Mark Döhmann spinning vinyl, of course. This added up to a pair of enormous speakers in an enormous room, with hard floors, and yet the sound was controlled and coherent and very natural."
- Marc Phillips, PT Audio
Read and listen to the full coverage here.
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