Supatrac - Blackbird 'Sideways Uni-Pivot Arm'

SUPATRAC Blackbird

The Blackbird is a new turntable tone-arm with a revolutionary patented* 'Sideways Uni-Pivot Arm' (SUPA) bearing which outperforms traditional tone-arms. The sideways uni-pivot bearing directly opposes stylus drag at a single point of contact, eliminating microscopic play in the time axis and avoiding the scrubbing and roll movements which can degrade the performance of conventional uni-pivots. The Blackbird's SUPA bearing delivers unprecedented performance.
(* UK patent 2599073, international patents pending)

Reactive Downforce
Loud passages increase stylus drag, producing oscillating vertical torque on normal tone-arms - the stylus can struggle to stay in good contact with the groove. The SUPA bearing pivots just below the record level so that bursts of stylus drag produce a slight downwards torque, just when it's needed. That's how the Blackbird hugs the groove with tenacity during punchy dynamics. Torque-Reaction-Assisted Contact (TRAC) plays the hottest grooves with less distortion.

Perfect Timing
The Blackbird is designed to resist the pull of the cartridge with unyielding rigidity on the microscopic scale. Only by maintaining a perfect position in the groove's time axis can a cartridge reproduce the true shape and explosive energy of a recorded signal. By directly opposing the oscillating drag forces from the cartridge, the SUPA bearing avoids scrubbing, chatter and the resulting time errors which can frustrate the retrieval of music.

Features of Death Star Thrust Box

• Rigid frame
• Minimized inertia
• Low center of gravity
• Paramagnetic
• Tough coating

Universal SUPA
The Blackbird is designed to be lightweight and stable, fitting almost any turntable including classics like Linn, Technics, Garrard, Rega and many more. It can be matched with high-compliance cartridges due to its low inertia, and it comes with a mass adaptor to keep low-compliance cartridges under control too, making it compatible with the broadest range of cartridges from Shures to Miyajima Monos.

Arm tube
The Blackbird's arm tube is made of pultruded carbon-fibre. The headshell area is reinforced with aluminium and the tube cavity is filled with a damping foam. The arm tube is clamped firmly to the thrust box with machine screws and steel nuts for high rigidity. The arm forms an exceptionally inflexible and dead structure with tennis-racquet-class strength-to-weight ratio.

Protractors
A protractor is included with each arm, making it easy to ensure accurate spindle-to-pivot distance, pivot-to-stylus distance, and cartridge offset. Protractors are available for download. Print at 100% scale and check dimensions are accurate size with a ruler.

Blackbird Mounts
The standard Blackbird mount is compatible with Rega, Linn, SME, Kuzma, Pro-Ject, Michell, Brinkmann, TW Acustic and many other decks.

Inertia
A nine-inch Blackbird has a base effective mass of roughly 10g. A mass adaptor is supplied with all SUPATRAC arms for compatibility with cartridges which suit heavier arms. Multiple mass adaptors can be used with very stiff cartridge suspensions because the SUPA bearing does not bear the arm's weight. It is possible to load SUPATRAC arms with a kilogram or more of mass with outlier cartridges, without compromising arm performance.

Wires
The Blackbird is designed for maintenance and modification. If you have specific wiring requirements, the internal wiring is easily replaced. By default the internal wiring is 30/0.04mm silk-covered copper litz. If supplied, arm cables come with straight or right-angle DIN connectors as requested.

Finger Lifters
The Blackbird comes with an additional rigid finger lift for those who do not wish to use the string finger lift. However, the elegant simplicity of the tress of soft cord is recommended as it protects the cartridge from accidental downward pressure. With the tress you can ensure that the stylus has engaged with the groove at the beginning of the record before you let go, and you can grip it firmly at the end of a record before lifting the stylus out of the groove. Many skeptics have changed their minds after finding there is less stress with the tress.

Spindle-to-pivot distance for mounting: 291mm

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