64 Audio Duo

Captivates the senses

Duo is a two driver hybrid universal in-ear monitor (UIEM). Following Trió and Fourté, Duo is also a fully tubeless design, with the added benefit of being one of the worlds only semi-open back UIEMs. Built with the complete Tia™ System, Apex Core, Wave Sync, and LID, Duo presents 64 Audio’s signature balanced sound in a whole new way. The simple audio design captures the listener’s auditory senses while forgetting they’re wearing IEMs in the first place.

Sound

Duo feels light, leaving your ears feeling open and relaxed even for long listening periods. You feel simultaneously connected to your physical surroundings while you’re enveloped by music. Their relaxed tonality lets you put them on and get lost. It’s able to present a non-analytical top-end while retaining air and sizzle. The vast open air sensation supports an unobstructed soundstage with impactful center imaging (unlike many other open back headphones) as well as no loss of bass. Duo effortlessly produces deep and rich low frequencies with plenty of sub bass.

64 Audio Duo specifications

• 1 tia™ High Driver – 1 Dynamic Low Driver
• 20hz – 20kHz Frequency Response
• 98 dB/mW Sensitivity
• Integrated 2-way passive crossover
• 9Ω Impedance
• -12dB isolation apex core technology