Description of the OM Pro from the official Ortofon website:
The Ortofon Pro is known for Great performance and durability in basic scratching and back-cuing. It has a quality spherical stylus, a rock-solid cantilever, and serves general purposes well.
The Pro is the logical alternative to the more expensive “expert” cartridges. It offers both reasonable output and high sound quality which is, in fact, all there is needed to entertain an audience.
The Pro-series of cartridges provides a great balance of sound quality with tracking ability, for virtually any style of music. With flat, transparent sound across the spectrum and excellent handling ability, the Pro Series represents one of the longest running values in DJ cartridges.
Please note, RIOTSOUND is an AUTHORIZED ORTOFON DEALER as well as a direct partner of ORTOFON USA. Every ORTOFON product we sell comes factory sealed and includes an original factory warranty. With nearly a decade of pro-audio retail experience, at RIOTSOUND we offer you the expertise, commitment and attentive customer service to make sure you will be 100% satisfied with your purchase, each and every time. Please shop with confidence and peace of mind.
Output voltage at 1000 Hz, 5cm/sec: 5 mV
Channel balance at 1 kHz: 2 dB
Channel separation at 1 kHz: 20 dB
Channel separation at 15 kHz: 15 dB
Frequency range at – 3dB: 20-20,000 Hz
Frequency response: 20-18,000 Hz + 3 / – 2dB
Tracking ability at 315Hz at recommended tracking force: 70 µm
Compliance, dynamic, lateral: 7 µm/mN
Stylus type: Spherical
Stylus tip radius: R 18µm
Tracking force range: 3.0-5.0 g (30-50 mN)
Tracking force, recommended: 4.0 g (40 mN)
Tracking angle: 20°
Internal impedance, DC resistance: 750 Ohm
Internal inductance: 450 mH
Recommended load resistance: 47 kOhm
Recommended load capacitance: 200-600 pF
Cartridge weight: 18.5 g
Replacement stylus unit: Pro
Shop with an AUTHORIZED ORTOFON DEALER and receive a 1 year warranty on your item:
All of Ortofon’s cartridges are backed by a 1-year guarantee against defects in workmanship and materials when purchased from an authorized Ortofon dealer. Should your item malfunction as a result of faulty materials or workmanship, Ortofon will repair the defect(s) or replace the merchandise. Ortofon’s warranty does not cover expendable items or used/demo items.