Kiseki BlackHeart N.S.
This is a short body Kiseki (25 mm long) which allows it to be mounted on a wider range of tonearms
This reissue of the original Kiseki BlackHeart is also machined out of solid blackheart wood, but is now in the short-body design of the Blue N.S. and Purple Heart N.S. SB.
The Kiseki BlackHeart N.S. is the first model to use a solid nude diamond mounted in and through the cantilever, instead of on it. This results in a mechanically better construction for better signal reproduction as well as higher reliability.
Body: Blackheart wood, 25 mm long
Cantilever: Solid boron rod, 0.28 mm diameter
Stylus: 0.08 x 0.14 mirror polished diamond
Stylus tip radius: 3 x 30 μm
Stylus mount: In cantilever
Vertical Tracking Angle (VTA): 20 degrees
Coil body: Pure iron
Weight: 6.4 g
Output voltage: 0.48 mV at 5 cm/s
Internal impedance: 40 ohm
Frequency response: 20 – 30,000 Hz ± 1 dB
Channel balance: 0.2 dB
Channel separation: 35 dB at 1 kHz
Tracking ability (At 315 Hz at a tracking force of 2.6 g): 80 μm
Dynamic compliance: 16 μm/mN
Recommended loading: 400 ohm
Recommend tracking force: 2.0 – 2.6 g
Optimum tracking force: 2.4 g
Recommended tonearm mass: Medium