World’s first passive audiophile-grade direct injection boxes. A pure transparent object lets light pass through without altering it in any way. Similarly, our DI boxes are equipped with C.R.I.S.T.A.L.® technology to be acoustically transparent and are built tough. With our GECKO® AYERS ROCK DI 100P, your sound shall be enhanced as accurately and cleanly as possible, full and free of feedback, coloration, noise, and most importantly they are maintenance-free! Free shipping within Singapore.