Unparalleled Audio Experience for Elite Performers

Introducing the 64 Audio Aspire 4 Performance Monitoring Tool, a revolutionary in-ear monitor designed for those who demand the best in sound quality and comfort. Inspired by the same sonic characteristics and technology worn by the world’s greatest performers using 64 Audio custom in-ear monitors, Aspire 4 delivers exceptional performance in a new ergonomic form factor.

Ergonomic Design Meets Superior Performance

Engineered by the innovative team behind 64 Audio's industry-standard audio gear, Aspire 4 prioritizes ergonomics without sacrificing performance. This advanced tool is designed to fit comfortably, reducing ear fatigue even during extended use. The result is a seamless blend of comfort and high-fidelity sound, ensuring you stay focused and inspired throughout your performance.

Patented Pressure Relieving Technology

Aspire 4 features our patented technology integrated into the earphone body. The pressure relieving channel offers controlled leak via acoustic filters, a significant upgrade from the pneumatically interactive foam in our traditional Apex™ implementation. This design provides roughly -20dB of noise isolation, significantly reducing ear fatigue while maintaining a clear and immersive audio experience.

Custom Acoustic Structure for Superior Sound

At the heart of Aspire 4 lies a custom-designed acoustic structure integrated onto the high-frequency balanced armature driver. This unique waveguide, unparalleled in its shape and implementation, enhances the driver’s efficiency by directing and focusing its energy for a crisp and clear sound. While the legendary response of our patented tia™ high-driver is renowned, Aspire 4 offers a configuration that comes remarkably close, setting a new standard for in-ear monitor performance.

Experience the Next Level of Audio Innovation

Join the ranks of world-class performers with the Aspire 4 Performance Monitoring Tool. Elevate your audio experience with cutting-edge technology, ergonomic design, and the signature sound quality that 64 Audio is known for. Whether on stage or in the studio, Aspire 4 is your ultimate companion for flawless performance.

64 Audio - Aspire 4 - Four Hybrid Driver IEM

15% OFF Selected USB DACs when purchased with any In Ear Monitor or Earphone
Shop Now
£899.00
£899.00

Unparalleled Audio Experience for Elite Performers

Introducing the 64 Audio Aspire 4 Performance Monitoring Tool, a revolutionary in-ear monitor designed for those who demand the best in sound quality and comfort. Inspired by the same sonic characteristics and technology worn by the world’s greatest performers using 64 Audio custom in-ear monitors, Aspire 4 delivers exceptional performance in a new ergonomic form factor.

Ergonomic Design Meets Superior Performance

Engineered by the innovative team behind 64 Audio's industry-standard audio gear, Aspire 4 prioritizes ergonomics without sacrificing performance. This advanced tool is designed to fit comfortably, reducing ear fatigue even during extended use. The result is a seamless blend of comfort and high-fidelity sound, ensuring you stay focused and inspired throughout your performance.

Patented Pressure Relieving Technology

Aspire 4 features our patented technology integrated into the earphone body. The pressure relieving channel offers controlled leak via acoustic filters, a significant upgrade from the pneumatically interactive foam in our traditional Apex™ implementation. This design provides roughly -20dB of noise isolation, significantly reducing ear fatigue while maintaining a clear and immersive audio experience.

Custom Acoustic Structure for Superior Sound

At the heart of Aspire 4 lies a custom-designed acoustic structure integrated onto the high-frequency balanced armature driver. This unique waveguide, unparalleled in its shape and implementation, enhances the driver’s efficiency by directing and focusing its energy for a crisp and clear sound. While the legendary response of our patented tia™ high-driver is renowned, Aspire 4 offers a configuration that comes remarkably close, setting a new standard for in-ear monitor performance.

Experience the Next Level of Audio Innovation

Join the ranks of world-class performers with the Aspire 4 Performance Monitoring Tool. Elevate your audio experience with cutting-edge technology, ergonomic design, and the signature sound quality that 64 Audio is known for. Whether on stage or in the studio, Aspire 4 is your ultimate companion for flawless performance.

Feature Specification
Material Moulded ABS Shell + Stainless Steel Nozzle
Driver Type Dynamic + Balanced Armature
Driver Configuration 1 low DD, 2 mid BA, 1 high BA
Frequency Response 20Hz – 18kHz
Sensitivity 104 dB/mW @ 1kHz @ 1mW
Impedance 11Ω @1kHz
Crossover Integrated 3-way passive crossover
Isolation -20dB apex core® technology
Additional Feature Hybrid drivers deliver dynamic lows, nuanced mids, and sparkling highs
Additional Feature Same technology as 64 Audio custom in-ear monitors
Additional Feature Ergonomic design prioritizes comfort without sacrificing performance
Additional Feature Apex Core Technology reduces ear fatigue with -20dB noise isolation
Additional Feature Linear Impedance Design ensures consistent sound across devices
Additional Feature Custom Waveguide enhances driver efficiency for clear sound
  • Carry Case
  • Foam + Silicone Ear Tips
  • 48" Black IPX Cable
  • Cleaning Tool
  • 1/4" Adapter
  • Shirt Clip
Delivery & Returns Information

Item Ships from our UK Warehouse - Typical delivery is 3 - 5 business days for mainland UK. OTIC can be contacted for updates.

Free shipping on all baskets over £250.

We offer a refund on any unused items, subject to our returns policy.

Click here to view all delivery & returns info - including shipping, tax, and duty information for International Customers.

15% OFF Selected USB DACs when purchased with any In Ear Monitor or Earphone
Shop Now

Products purchased from OTIC Audio are supplied with a manufacturer warranty that is specified on the product page on our website. Most products come with a 1Y manufacturer warranty (or 3 months for B-grade, open box, refurbished, ex-demo, and second-hand items).

The manufacturer's warranties are limited to physical defects in the materials, parts, and workmanship used in making the product. Abnormal conditions, deliberate abuse, and damage due to accidents, operator's error, or unauthorized service attempts are excluded from any warranty claims.

Faulty goods returned under the manufacturer's warranty are to be returned to OTIC Audio at the cost of the customer. OTIC Audio will cover the cost of shipping the repaired or replacement product back to the customer.

64 Audio - Aspire 4 - Four Hybrid Driver IEM

64 Audio - Aspire 4 - Four Hybrid Driver IEM

£899.00

64 Audio - Aspire 4 - Four Hybrid Driver IEM

£899.00

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