Pro Studio headphones from Studiospares with extra long 4m lead . The most important element of a headphone's design is the diaphragm. To move the air necessary to create sound waves, the diaphragm must flex by relatively large amounts. Unless every part of it is equally stressed, distortions in response and linearity will occur. The Presence monitor diaphragms are derived from a computer CAD program which equalises these stresses. Listening tests confirm that the sound is more natural than would be expected from a model in this price range. Frequency range 20Hz to 20kHz. 80mW power rating. Sensitivity is 108dB and the impedance is 32 ohms so they can be used with any equipment.
The headband and earpads provide the level of comfort necessary when worn for long periods. The adaptor provides jack or mini jack compatibility.