REFERENCE ULTRA SERIES – Ultra-High-End
After collecting detailed experience in SQ performance and general in-car audio reproduction for more than 25 years during the development of loudspeakers, subwoofers and amplifiers for highly demanding customers and having launched a wide range of car audio products used for sound quality competitions all over the world, GROUND ZERO had started to take advantage of all these gathered skills devising a very new and super high-end product line. For the most sophisticated demands, GROUND ZERO introduces an extraordinary two-channel amplifier and matching loudspeakers now! REFERENCE ULTRA series products are developed by highly attentive engineers from England, Sweden and Germany creating products for the most demanding customers without accepting any compromise in overall quality and SQ performance.
This category includes some optionally available products to be used additionally at the installation of loudspeakers.
51080202: 38 cm / 15″ Protection grill
51080203: 16.5 cm / 6.5″ Protection grill
81080010: High power speaker protection
81621010: 25 cm / 10″ subwoofer grill
81780100: Wire reducer