Murrieta, Calif. - Ultrasone took the wraps off the first open-backed headphones in its Pro series and said it will offer them in two different configurations.
The Pro 2900 will be sold in a standard, single-cable model and a balanced, double-cable version. The former, which has a $549 suggested retail, is geared toward pro audio and audiophiles while the latter ($799) is meant to further reduce distortion and crosstalk.
According to Ultrasone, "Balanced headphones must be paired with a balanced amplifier -- 4-channel amp with two inverted positive channels -- that instead of using a common ground, uses two wires per side to deliver positive and negative audio signals to each side of the headphone."
The Pro 2900 headphones have a blast design with velvet ear pads, 40mm titanium-plated drivers and a USC-Cable. They come with the company's S-Logic Plus technology that is mean to reduce sound pressure on ear drums and improve tonal perception. Frequency range is listed at 6Hz to 42,000 Hz, with an impedance of 40 ohms.
They're currently available. A carrying case is included.