The new ZEM headphones use a simple amplifier to produce sound in the earpieces. They simultaneously cancel background noise using patented technology invented at Syracuse University by acoustic researcher Dr. Jozef Zwislocki.

The absence of complex electronics lowers cost and produces a headset weight of two ounces. The compact unit can be folded to fit in a shirt pocket or ZEM case. No batteries are needed.

"Professional studio musicians who have tried ZEM headphones for recording sessions have ordered more of them," said Gregory Post, President of SensGard LLC, the manufacturer. "ZEM headsets eliminate distorting electronic effects, leaving only the true sound created by musicians or speakers."

The headphones are ideal for airplane passengers and those surrounded by background noises. The noise cancellation feature of the phones is non-electronic and, according to the company, so effective that users can turn down the volume and still hear clearly.

The physics-based sound filter invented by Dr. Zwislocki reduces noise at both low- and high-frequency ranges, lowering noise levels by up to 37 decibels.

The only electronics in the headphones are two miniature electro-magnetic receivers that convert electrical signals into sound. They are, in effect, tiny electro-mechanical amplifiers. The 3.5 mm plug on the electrical cord is compatible with MP3 players, CD players, cell phones, iPods, laptops, satellite radio and home computers.

The headset fits into the outer ear and is designed to stay in place even while exercising or moving about. The headband that connects the two earpieces adjusts for fit.

ZEM headphones are available at $90.00. All ZEM products are made in the USA.

Photos and more information about new ZEM headphones can be found by visiting http://www.SensGard.com.