64 Audio U18s

Listening to U18s gives the sense that a filter has been lifted off of your music; it is suddenly more direct and vibrant. Resolution and presentation that reveals details which have previously gone unnoticed. The space between you and the performance is removed; the difference between hearing the best reproduction and experiencing it being played in real-time. The enveloping sound-stage and wide frequency response allows you to really press into the music without fear of harshness or fatigue.

Tia technology

• Tubeless In-Ear Audio (tia) is a patented IEM design methodology that aims to reduce unwanted resonance and distortion for a transparent and lifelike sound signature. The tia system is comprised of three major elements: open balanced armature tia drivers, the tia single-bore design, and tia acoustic chambers. U18s features two major elements of the tia system: the tia driver and the tia single-bore design.

Apex core technology

• Air Pressure Exchange (Apex) is a patented vent that releases air pressure in a sealed ear canal all while retaining standard IEM levels of isolation; enabling musicians and music enthusiasts to listen more comfortably for longer. This venting alleviates listener fatigue and allows for a much more realistic soundstage. Apex comes in three module variations for U18s: mX, m15 and m20

LID technology

• Linear Impedance Design (LID) is a patented circuit that corrects the non-linear electrical resistance of the multiple driver-sets comprising this 18 driver IEM. Varying source amplifier output impedance in devices like smartphones, body packs, DAC/amps, and DAPs typically results in varying frequency response across them, depending on the increase in resistance. Restoring proper interaction with the source and preserving the desired sound signature enables a consistent reliable sound.

Electrical Low-Pass Filter

• A crossover circuit replacing traditional acoustic dampers which can introduce unwanted distortion through vibration and air turbulence. Rather than using acoustic dampers to filter unwanted frequencies after the driver produces them the electrical low pass filter lowers distortion by eliminating unwanted frequencies before they reach the driver.

Specs:

• Drivers: 18
• Driver Configuration : 1 tia High Driver – 1 High-Mid Driver – 8 Mid Drivers – 8 Low Drivers
• Frequency Response: 10Hz - 20KHz
• Sensivity: 106 dB/mW Sensitivity @1kHz @ 1mW (84mV)
• Impedance: 8Ω Nominal
• Crossover: Integrated 4-way Passive Crossover
• Isolation: Apex Technology Isolation: -20dB, -15dB, -10dB
• Premium Cable 3,5mm
• Included: U18t Universal in-Ear monitors, 64 Audio premium leather case, TrueFidelity foam eartips (S,M,L), SpinFit Silicone Eartips (S,M,L), Silicone Eartips (S,M,L), 3.5mm Black Premium Cable, Apex modules: m20/m15/mx, Cleaning Tool, Cable Clip, Round Sticker