Finally, a solution to the nearly 100 year old audio engineering dilemma: How do you reduce distortion and noise caused by the heat generated by a vibrating speaker cone? The answer: HDSS Technology. From audiophiles to audio engineers, the groundswell of enthusiasm for this new technology is shocking listeners and perplexing competitors. Hear sounds in your music that you have never heard before. Locate sound sources on the left, right, front and back. Listen to the delicate vibrato of a singer and the pure sound of an instrument, without distortion.