Test review hidiamond products

Interview to HiDiamond CEO Filippelli Salvatore.

Test reviews of guides from the italian magazine Fedeltà del Suono for DGT + MKII.

Test reviews from the italian magazine Fedeltà del Suono for the Diamond 7 RCA.

New Test Review for the D6 signal cable and the D3 speakers cable.

Test cables HiDiamond Yelbaev Tribute from Russia.

Test Review from SalnonAV Russian Press.

Test Review the IRAN press.

One of the most interesting articles of the year: The "passive bi-amping"