Tonino Lamborghini Quantum HL-01 Earphones (Silver) When style, luxury and high technology come together, a work of high art is born. Quantum HL-01, the top model in the Quantum range, are hi-end in-ear headphones with an exclusive design from Tonino Lamborghini. Quantum HL-01 earphones are fitted with a high-tech dual driver with integrated crossover that delivers unprecedented sound quality. Quantum HL-01 earphones have a perfectly balanced sound for superb reproduction of all genres of music - from classical music to heavy metal and from the sounds of nature to industrial beat. All Quantum models are equipped by metal logo. Relief image of "Raging bull" polished by hand. The dual driver technology delivers the highest level of sound clarity and detail unattainable for traditional full-range speakers. The central part of the coaxial driver is 7 mm in diameter and delivers crystal clear upper- and natural mid- range sound. The 13mm ring-radiator driver reproduces bass with an unprecedented depth and exceptional fidelity of the entire low-frequency range. The integrated crossover (band-separation filter) ensures the two drivers are synced perfectly.