Sorane ZA-12 Tonearm

Double Bearing Pivot suspension

The key to tonearm quality is the sensitivity and stability in retrieving delicate signals, for which the bearings are the determining factor. The ZA12 employs specially designed “Double Bearing Pivot suspension” for vertical suspension, (which supersedes even two sets of fine radial bearings, installed SA-1.2B). Schematic in this photo is exaggerated Illustration to show you inner structure of Double Bearing Pivot, extracting inside parts to outside, on purpose. Thanks to this ultra-fine precise suspension, you would enjoy extensive reproduction sound to limit-less high frequency, even from very base low sound.

Counter weight shaft damping

To damp whole movement of tonearm-wand, counter weight shaft composes of 2 pipes, brass-pipe inside and Delrin (Dupont-Plastic) pipe out side, which is connected to ZA-12 main body via outer rubber ring, through rubber adhesive. The rectangular arm-wand is machined from a solid aluminum block having an advantage in rich and tight bass reproduction. As bass sound is mainly recorded in the horizontal plane of the groove, the low resonance frequency of the ZA12 will give excellent low bass reproduction. Tonearm wires run through separate aluminum tubes inside the arm so that stereo separation is maximized. The geometry of the ZA12 is chosen to give excellent sound for all types of music, for old classical recordings, and new audiophile recordings. The curve fits nicely between the Stevenson geometry (good for classical) and Lofgren (good for modern audiophile recordings).