Not only can the efficient Tesla acoustic transducers be used for exceptionally precise and richly detailed sound, but their high efficiency also benefits low-output mobile players. Various impedances are therefore offered: 32, 250 and 600 ohms.
Use the standard variant (250 ohms) to savour the sound at home on your system. The 600-ohm models are ideal to enjoy music over longer periods with a headphone amplifier. Meanwhile, if you want to connect your headphones to small appliances when on the move too, then the 32-ohm variant is a perfect choice.