Harmonic Technology's Pro-9 Reference (available as Pro-9 Reference mono speaker wire and Pro-9 Reference internal bi-wire) is an improvement of our award-winning Pro-9 Plus speaker cable (Golden Ear Award from Absolute Sound and Stereophile's Guide to Recommended Components). It comes in a variety of lengths and terminations to accommodate any of your speaker cable needs.

Harmonic Technology's Pro-9 Reference is our finest copper speaker cable. It uses the highest quality materials and our unique Balanced Field Geometry to ensure the highest quality signal transfer and to greatly reduce inductance and capacitance for extremely accurate sound. The Pro-9 Reference is manufactured with 9 AWG wire that consists of the highest purity 6N copper available (99.9997%) and our world-renowned Single Crystal design to eiminate distortion and coloration. To further eliminate cross-talk, the Pro-9 Reference uses air-tube technology to separate the conductors within the cable. Harmonic Technology's Pro-9 Reference is the best speaker cable available for large speakers and/or exceptionally powerful amplifiers.

The Pro-9 Reference allows the bass to be not only very tight, but also extremely dynamic. The midrange is exceptionally rich and very large, with tremendous detail and harmonic completeness that borders on realism. The highs are very smooth, yet also detailed, without the artificial "zing" that other speaker cables may have. Harmonic Technology has delivered a speaker cable that allows the soundstage to bloom as large as your room, a holographic depth and roundness you simply must experience. The Pro-9 Reference will easily outperform your existing speaker cables and transform that sound of your system.

Pro-9 Reference Technical Data