Spero che questa breve recensione sia utile e vi possa aiutare nella vostra scelta d?acquisto A negative. El cepillo es muy suave y no hay peligro de rayar la bici, pero resulta un poco delicado porque, si no se presta atencion, se deforman facilmente los filamentos. Bummed I didnt get to wear these. Great for listening to music. Have to say, I?m so impressed and finally found some incredibly balanced IEMs that are comfortable with a nice soundstage, tight bass, fantastic bright highs, and full mids where vocals can express their surround sound to envelope you. Taken after wearing for 13 hrs (in an office & driving). After a week of switching to these my pain eased. this is the one to buy! I had the new monitor (Samsung commercial display / TV) plugged into the StarTech unit and was trying to check the TV for the first time to understand its functions.