TRABUCO CANYON, CALIF., Feb. 17, 2009 – Powersports electronics manufacturer MH Instruments Inc. (MHI), developer of the original Rumble Road™ "Premium" stereo speakers with built-in amplifiers, has introduced Rumble Road™ "Ultra", a higher-gain, more powerful speaker system that more than doubles the output of the company's innovative speaker line designed with amplifiers built into both speakers.

Water-resistant, MHI's Rumble Road™ "Ultra" speakers install easily on the handlebars of most motorcycle cruisers and work with most plug-and-play MP3 players, portable FM stereos, and satellite and marine stereo radios. They also work with CD and cassette players featuring a standard mini-plug headphone jack.

"Designed specifically for the demanding environments of motorcycles and other powersports vehicles, Rumble Road™ 'Ultra' delivers more than twice the stereo output of our groundbreaking 'Premium' amplified speakers introduced six years ago," said Mauro Dresti, MHI co-founding partner and product developer. "Our newest offering uses the latest-available electronics to deliver powerful, clear audio response at 70 true Watts per speaker – 100 Watts peak, for a total peak output of 200 Watts per system," Dresti said. "There's nothing out there today that can match or beat that for an aftermarket stereo speaker system that sounds this good even at highway speeds."

Unlike many other aftermarket speaker setups with separate amplifiers, the MHI Rumble Road™ line of speakers featuring amplifiers housed safely and securely into both units translates to a very clean, classically retro look. "Our speaker system blends in perfectly with a bike's overall appearance," Dresti said. "In fact, second to audio superiority, our customers are most delighted that Rumble Road™ speakers, housed in standard spotlight shells, don’t stand out.

"We are proud that our core speaker offerings are designed, developed and built in the United States," Dresti added. "It's a challenge to build quality American-made product at a price that is not just competitive but also affordable to customers in today's economy. But that has always been our philosophy at MHI," Dresti said. "We offer market-pushing products that are made in the USA, are reasonably priced and don't look like awkward add-ons. The only thing more patriotic than making our speakers would be buying, installing and enjoying them."

MSRP for the chromed pair of Rumble Road™ "Ultra" speakers with matching clamps and stainless steel grilles is US $369.95. The speakers are also available in a black powder-coated finish for US $399.95 retail per pair, including matching clamps in most popular sizes. A complete "Ultraluxe™" kit, which includes MHI's custom chromed CrankCase™ volume control/power switch device for 1" handlebars, retails at $499.95. For additional product information, including how to order, visit www.mhinstruments.com, or call toll-free +1.866.713.2173; local 949.713.2173.