The award winning Performance Graphite Optical cable allows you to experience superior sound quality when connecting DAC #39;s, TVs, CD players and Blu-rayTM players to amplifiers or receivers. Performance Optical uses a polymethyl methacrylate (PMMA) acrylic glass optical fibre to comfortably transmit the higher bandwidth signals demanded by today #39;s multi-channel digital audio links. The cable is optimised for a #39;very low jitter #39; design to reduce digital errors, making for a cleaner audio data transmission. Here at QED we are so confident about the performance of our product that we offer a lifetime guarantee. PROSEDUR UNBOXING: Saat barang diterima, pembeli WAJIB melakukan UNBOXING VIDEO mulai dari, 1. PAKET PERTAMA KALI DIBUKA. 2. MENUNJUKAN KELENGKAPAN PRODUK DALAM DUS. 3. MENUNJUKAN SEGEL MASIH UTUH TIDAK RUSAK/ROBEK DAN NO SERI PRODUK. 4. MENUNJUKAN KONDISI FISIK KESELURUHAN BARANG. **Video unboxing HANYA BOLEH 1 VIDEO DAN TIDAK ADA JEDA (BUKAN VIDEO RE-UNBOXING) Harap mengikuti PROSEDUR DIATAS bila ingin mengajukan komplain. Dengan ini, pembeli dianggap paham dan setuju bahwa komplain TIDAK DITERIMA bila TIDAK mengikuti PROSEDUR UNBOXING diatas.