Exquisite or requisite? – With Raal's SR1a [$3'499] from Serbia's ribbon tweeter experts, it doesn't matter. Under the Raal Requisite brand, it's a true dipole ribbon headphone of 425 grams which floats on your head to deliver 33Hz-30kHz bandwidth. There are hi-tech carbon-fibre baffles, a head band of stainless spring steel, lambskin leather padding and memory foam bars. An interface box with all the necessary cabling is included in the Pelican hardcare delivery to connect to a speaker amp of the customer's choice. Warranty is five years.