Tonearms — J.Sikora KV9 MAX

The KV9 MAX is the 9 inch member of the Zirconium Series of tonearms from J.Sikora, the Lublin company that Janusz Sikora founded in 2007 to build turntables and arms by hand. Its debut came at the Warsaw Audio Video Show, followed two weeks later by a showing at Capital AudioFest in Washington. Compared with the standard KV9, it moves to a thinner Kevlar tube, a zirconia pivot and heavier bronze and brass parts, and the European price is EUR 10,000 in its base configuration, rising to about EUR 10,625 with options.

Key specs that matter

Effective length is 228.6 mm, and the mounting distance from pivot to spindle is 212 mm. Effective mass is quoted at 10.7 g. J.Sikora gives the arm a mass of 245 g, and the separate VTA mechanism adds 225 g. The bearing is a unipivot running in silicone oil, and the armtube is a conical Kevlar moulding. Besides the aramid fibre, the parts list names bronze, brass, aluminium and stainless steel. Buyers choose natural yellow or lacquered black matte, and the arm can be ordered with or without a DIN connector at the base.

Engineering and use context

The Zirconium name refers to the pivot spike, made of zirconium dioxide, a hard ceramic chosen to keep the single contact point precise under load. Because a unipivot is free to rock, the oil bath around the bearing steadies the tube and keeps the cantilever stable while the stylus is in the groove. The aramid tube is shorter and noticeably slimmer than on the original 12 inch arm, which called for tighter machining tolerances, and J.Sikora uses special damping foam inside it. The bearing housing is now cast in bronze instead of aluminium, and a set of bronze counterweights in different sizes lets the owner balance heavy or light cartridge bodies. Internal wiring is 24 carat gold-plated 6N OCC copper from Soyaton, five strands in total, each sleeved in thin Teflon, with one strand reserved for earthing the ceramic pivot. Azimuth is set by a horizontal screw in the main counterweight. The VTA tower uses a calibrated aluminium dial, so arm height can be changed with the platter spinning. The weight on a thread looks like the anti-skating device, but most of that force actually comes from the loop of wiring.

Pairing

By effective mass the arm is a light-to-medium design, and J.Sikora positions it as a partner for a broad choice of moving coil cartridges. Its mounting distance fits armboards cut for the standard geometry of this length, including J.Sikora decks such as the Standard Max Supreme.

Alternatives

The J.Sikora KV9 costs less than half as much and replaces the zirconia pivot with a steel bearing and black aluminium parts.