64 Audio Aspire 4 closeup front with attached stock cable and eartips over white background
64 Audio Aspire 4 closeup front rotated over white background
64 Audio Aspire 4 closeup front leaning against one another over white background
64 Audio Aspire 4 closeup front over white background
64 Audio Aspire 4 closeup rear over white background
64 Audio Aspire 4 narrow focus front rotated with attached stock cable
64 Audio Aspire 4 closeup inserted into human ear with attached cable

64 Audio Aspire 4 | Hybrid Dynamic + BA Universal IEMs

Regular price$899.00

64 Audio Aspire 4 logo black

Bring the On Stage Experience Home With 64 Audio Aspire 4

  • Four-driver hybrid IEM tuned to provide the clarity and detail artists need for the stage combined with the musicality and engagement listeners crave
  • Simplified shell offers an easy lightweight fit
  • Apex Core provides pressure release for great bass response and long listening sessions
  • Waveguide technology delivers perfectly balanced treble with all the detail and extension and a non-fatiguing sound

64 Audio Aspire 4 closeup sitting on acoustic guitar body next to neck and strings

Performance Monitoring for Artists, Engaging Listening for Fans

Monitor your performance with 64 Audio's professional UIEMs specifically designed for musicians and live music professionals. Whether you're just getting into monitoring with in-ears, not ready for customs, need a backup set, or simply prefer generic fitting products, Aspire 4 offers best-in-class sound and ergonomics.

Aspire 4 is a performance monitoring tool with the same sonic characteristics and technology worn by the world's greatest performing artists. The new form factor prioritizes ergonomics without sacrificing performance. Aspire was designed and engineered by the same innovative team responsible for developing the industry defining audio gear for which 64 Audio is known.

64 Audio Aspire 4 with attached stock cable hanging from guitar neck

World Class Sound

With live music at the forefront of 64 Audio's tuning criteria, should they focus on creating a highly accurate, unforgiving studio monitor or a contoured device that assists musicians with hearing themselves more effectively? As with many of 64 Audio's monitoring tools, the answer is somewhere in the middle. Huge bass that can reproduce some of the toughest frequencies in the audible spectrum with quick ease, forward mids that are precisely elevated for articulation in the most vital region of instruments and voices, and plenty of top end sparkle really separate Aspire 4 from any other UIEM in its class, making this powerful sound signature a perfect blend of accuracy and musicality.

64 Audio Aspire 4 with attached stock cable hanging from black steel with blue lighting

Apex Core

64 Audio's patented technology is seamlessly integrated into the body of the earphone. The pressure relieving channel provides controlled venting via acoustic filters. Aspire 4 users get the benefits of 64 Audio's flagship technology with -20dB of isolation combined with ear saving venting.


Custom designed acoustic structure integrated onto the high-frequency balanced armature increases the driver's efficiency by directing and focusing its energy for a crisp and clear sound. Waveguide offers a taste of 64 Audio's flagship tia technology in a more accessible package.

64 Audio Aspire 4 driver frequency diagram


  • Transducer Configuration
    • (x1) Dynamic driver (Lows)
    • (x2) Balanced Armature drivers (Mids)
    • (x1) BA driver (Highs)
  • Frequency Response: 20Hz – 18kHz
  • Sensitivity: 104 dB/mW @ 1kHz @ 1mW (94mV)
  • Impedance: 11Ω @1kHz
  • Crossover: Integrated 3-way passive crossover
  • Isolation: apex core -20dB
  • Cable: 48" IPX Pro Cable
  • 64 Audio 1 Year Warranty

In the Box

  • 64 Audio Aspire 4 IEMs
  • 48" IPX Pro cable with 3.5mm termination
  • 3.5mm to 6.3mm adapter
  • 64 Audio Zipper case
  • Silicone ear tips + Foam ear tips (S/M/L)
  • Cleaning tool

64 Audio Aspire 4 retail box with all included accessories warm over leather padding

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