AudioQuest's New "ZERO-Tech" Brave Heart Speaker Cables
udioQuest calls its new Brave Heart ($4990 per eight-foot pair, $5790 per ten-foot pair) "bigger, quieter, and altogether better than any speaker cable AQ has offered at its price." It features AudioQuest's ZERO-Tech technology, whereby the positive drain wire connects to the negative at the speaker end. This eliminates impedance mismatches between the cable and the attached source and load. Brave Heart is nearly the size of AudioQuest's Mythical Creature speaker cables, with only a 0.6mm smaller outside dimension. Internally, it has almost a third more Perfect-Surface Copper+ conductor material than is used in previous models. More metal means that variation in speaker impedance across the frequency spectrum has less effect on frequency response. Brave Heat also uses upgraded polypropylene insulation, with conductors that are spaced farther apart due to the optimized insulation, reducing capacitance distortion. Thicker layers of carbon-loaded PVC, newly added graphene, and 4% silver shield drain wires further improve noise dissipation. To further minimize the negative effects of induced RF-noise and timing errors due to dielectric noise, Brave Heart includes AudioQuest's 72v Dielectric-Bias System. About the new speaker cable's performance, AudioQuest
says, "Brave Heart's larger overall size results in more 'torque' -- a sure and
muscular grip on the music, especially the bottom end. Damping-factor is better preserved
over length, especially benefitting speakers with ported (4th-order) enclosures that rely
on strong amplifier control to perform their best." |
