Zephyr delivered an intimate in-the-room experience, with a neutral but warm tonality and a hefty soundstage. The downbeat blues/jazz compositions were totally engaging making it hard to remember that you were listening to a recording and not a live performance in living room. 10mm dynamic driver provides the air and impact with satisfying sensation, bass is tight, clean, low-reaching and quick. Overall, you have never heard the track sound so analog and musical with no congestion even during passages where there were dozens of competing sounds.

Dr. John picked the science and technology concept "Black Matrix" as the faceplate design under the black tone that is generally liked by musicians. The material is made of metal hexagonal honeycomb shape with black gold glitter, which can be seen under lighting reflection as special flashing effect.