Check the listing for details. Ortofon Concorde SCRATCH Cartridge Mk2 Twin Pack. Color: White, Condition: New. Listed at 321.99 USD. Concorde Scratch - especially developed for scratch and back-cueing As implied by the name, the Scratch is intended especially for the disciplines of scratch and back-cueing. It is made of a fluorescent neon-red material with the intention it becoming highly apparent in spotlight and luminous in ultraviolet light. For DJs that require increased tracking ability, the Scratch is up to the task. Featuring a reinforced rubber suspension, DJs need not worry about compromising sound quality and stylus life when working with higher tracking forces. With solid bass reproduction and extended highs, the Scratch is great for any style, providing energetic, in-your-face sound. Very high output! Maximum scratch performance guaranteed! Output voltage at 1000Hz, 5cm/sec. - 10 mVChannel balance at 1kHz - 1 dBChannel separation at 1kHz - 22 dBChannel separation at 15 kHz - 15 dBFrequency range at -3dB - 20-18.000 HzTracking ability at 315 Hz at recommended tracking force - 120 μmCompliance, dynamic lateral - 14 μm/m NStylus type - Spherical R 18 μmTracking force range - 3 - 5 gTracking force recommended - 4 gCartridge weight - 18,5 gReplacement stylus unit - SCRATCH