Quantum (NASDAQ:QMCO – Get Free Report) and TDK (OTCMKTS:TTDKY – Get Free Report) are both technology companies, but which is the superior business? Analyst RatingsThis is a breakdown of recent ratings and target prices for Quantum and TDK, as provided by MarketBeat.com. The company operates through Passive Components, Sensor Application Products, Magnetic Application Products, Energy Application Products, and Other segments. The Magnetic Application Products segment offers hard disk drives (HDD) heads, HDD suspension assemblies, and magnets. The Energy Application Products segment provides energy devices comprising rechargeable batteries, and power supplies.