The Tesla transducers used in T1 / T5 (3rd generation) have been optimised to an impedance of 32 ohms. As a result, these headphones achieve the highest performance and best sound quality on all music sources, both stationary amplifiers and mobile players.
In contrast to the T1 predecessor models of the 1st and 2nd generation with an impedance of 600 ohms, no special headphone amplifier is required.