Class-D Amps From Pioneer Package High Power Into Compact Design

Pioneer Electronics (USA) Inc. today introduced three new high-efficiency “GM Digital” series Class-D amplifiers, the 4-channel GM-D9500F and the monoblock GM-D8500M and GM-D7500M. Inherent to Class-D amplifier design are vastly improved electrical and thermal efficiencies, allowing the amplifiers to produce the same power output as conventional amplifiers more than double their physical size. The new Pioneer GM Digital series Class-D amplifiers feature dynamic, balanced sound quality combined with high power output, all in an extremely compact chassis.

“While it is commonly understood that the addition of an external amplifier to an in-vehicle entertainment system can make the system play louder, the improvement in sound quality if often overlooked. An amplifier contributes to extended frequency response, greater dynamics and a less constricted sound overall,” said Ted Cardenas, director of marketing for the mobile business group of Pioneer Electronics (USA) Inc. “The new GM Digital series Class-D amps are also very efficient and compact, allowing them to be installed practically anywhere in the vehicle.”

Power and Performance
Pioneer’s GM Digital series Class-D amplifiers are 80-90 percent more efficient than those of traditional class A/B design. The monoblock GM-D8500M and GM-D7500M are engineered specifically to power in-vehicle subwoofers and feature 2 ohm stability allowing them to deliver high power and high current in a wide variety of configurations, from a single subwoofer to multiple subwoofer applications. The 4-channel GM-D9500F completes the line-up of GM Digital series by providing a matching full-range Class-D amplifier featuring the same electrical and thermal efficiencies and the same compact chassis design. The combination of the GM-D9500F with either of the GM Digital monoblock amplifiers provides the foundation of a truly high performance car audio system in a footprint that takes up less than 2 square feet of space.

For car audio enthusiasts, the GM series amps look as good as they sound. They feature a simple yet classy and modern cosmetic design perfect for custom installation displays. Each unit features black, aluminum die-cast heat sinks and a hairline silver aluminum top plate for maximum heat dissipation.

The new four-channel GM-D9500F produces 75 Watts X 4 while the monoblock GM-D8500M provides 300 Watts X 1 and the GM-D7500M produces 200 Watts X 1.

The GM-D9500F, GM-D8500M and GM-D7500M will be available in January 2010 for suggested retail prices of $270, $280 and $200 respectively.

Pioneer’s Mobile Business Group is known for offering the kind of in-car products that make driving more enjoyable by offering high quality audio and video, seamless connectivity and ease-of-use. Its focus is on the development of new digital technologies including audio video, navigation and satellite radio, while maintaining its strong heritage in products for car audio enthusiasts and sound competitors.

Pioneer Electronics (USA) Inc. is headquartered in Long Beach, Calif., and its U.S. Web address is Its parent company, Pioneer Corporation, is a leader in optical disc technology and a preeminent manufacturer of high-performance audio, video and computer equipment for the home, car and business markets. The company focuses on four core business domains including Blu-ray Disc and DVD, display technologies, navigation and Digital Network Entertainment™.