ETI Research Kryo Banana (par)The ETI Research Kryo Banana connector uses the same high quality materials as the Kryo Spade: Silver plated tellurium Copper connectors for maximum signal transfer and brass housing for noise rejection. CONDUCTOR Silver Plated Tellurium Copper HOUSING Brass (Black Finish) Perfect for high end audio equipment consumers expect nothing but the best. If youre developing a quality audio system for demanding audiophiles, be sure to make the smart choice