CU: strengthen the performance of frequency range, make the ETP material's frequency performance demonstrated more clearly and naturally.
AG: Strengthen the performance of high-frequency range, make the ETP material, CU coating demonstrated a broader frequency.
AU: Soften the full-range frequency, make the ETP material, CU/AG coating exhibited a more mellow sound.
RH: Strengthen the whole range of extremely high frequency, to create the overall sense of space/air by the frequency range, to demonstrate an unprecedented performance.
P.S.: ATL using PURE RH plating, compare to other brands' RH plating claimed, it is more beautiful white and with general sense of a significant difference in dark.
ETP COPPER
ATL use custom-made ETP copper, SGS certified 100% conductivity copper material, to produce ATL products power connectors / power receptacles / power inlets, makes these products current / freqency transmission, will not be hindered then lower the quality.
CONDUCTIVITY
ETP copper 100% Brass 25-35% Phosphor bronze 13%