Empire Ears ESR MKII vs 64Audio Aspire 3
Introduction
The Empire Ears ESR MKII and 64Audio Aspire 3 are premium IEMs designed to deliver studio-accurate, high-resolution sound. Let's compare both models so you can find the best in-ear monitors for your listening preferences.
Not the right fit? Browse other In-Ear Monitors from Empire Ears and 64Audio.
Empire Ears ESR MKII vs 64Audio Aspire 3 Price Comparison
The ESR MKII and Aspire 3 sit at the same price point.
The ESR MKII comes in at $1,099.00.
The Aspire 3 comes in at $649.99.
The ESR MKII costs around $400 more than the Aspire 3. Let's dive deep into the specs, design, sound signatures, and features of both so you can get a better idea of what each IEM brings to the table.
The Empire Ears ESR MKII
The ESR MKII is Empire Ears' studio-reference IEM. It features a five-driver hybrid setup with three BA and two Electrostatic drivers. In terms of features, the ESR MKII packs SynX, EIVEC, and A.R.C technology for enhanced sound and reliability.
Empire Ears ESR MKII Features:
- 5-driver hybrid system with 3 BA + 2 electrostatic drivers
- 4-way synX crossover with EIVEC for electrostatic integration
- A.R.C. technology to reduce resonance for cleaner sound
- Brushed Silver aluminum faceplate with ergonomic resin shell
- Includes Alpha IV UPOCC Copper Litz cable
Empire Ears ESR MKII Specs:
Driver Configuration: 3x Balanced Armature Drivers + 2x Electrostatic Drivers
Frequency Response: 10Hz - 100kHz
Sensitivity: 111dB @ 1kHz, 1mW
Crossover: 4-Way synX Crossover Network
Impedance: 3.9 Ohms @ 1kHz
The 64Audio Aspire 3
The Aspire 3 is a mid-tier hybrid IEM from 64Audio's Aspire series, designed to offer a balanced and musical sound signature suitable for both live performances and critical listening. It features a hybrid driver setup, combining a dynamic driver for low frequencies with balanced armatures for mids and highs, and incorporates 64Audio's proprietary technologies to enhance the listening experience.
64Audio Aspire 3 Features:
- Hybrid 3-Driver Design: 1 dynamic driver for low frequencies, 2 balanced armatures for mids and highs
- Apex Core Technology: for fatigue-free listening while maintaining natural isolation (~−20 dB)
- Custom Acoustic Waveguide: for enhanced high-frequency clarity and treble
- Ergonomic Molded ABS Shell: for enhanced fit and comfort
- Stainless Steel Nozzle: for enhanced durability and fit
- Detachable IPX Cable: 48″ right-angled 3.5 mm cable for portability and easy replacement
64Audio Aspire 3 Specs:
Driver Configuration: 1 DD + 2 BA
Frequency Response: 20 Hz – 18 kHz
Sensitivity: 107 dB/mW @ 1 kHz
Impedance: 12 Ω @ 1 kHz
Isolation: ~−20 dB (with Apex Core)
Shell: Molded ABS with stainless steel nozzle
Cable: Detachable IPX, 48″ length, right-angled 3.5 mm
Design and Build Quality
The ESR MKII and Aspire 3 are premium IEMs, boasting exceptional build quality, design, and ergonomics.
The ESR MKII keeps things professional and understated. Its medical-grade resin shell is ergonomic and lightweight, ensuring long-term comfort, while the brushed aluminum faceplate adds a subtle touch of refinement. With A.R.C. applied inside the housing, internal resonances are minimized, making the sound cleaner and more accurate.
The Aspire 3 features a simple design featuring lightweight but durable materials. Its shell features a molded ABS shell with a glossy red faceplate, giving it a clean, pro-grade look. The stainless steel nozzle ensures durability and a secure fit, while the ergonomic design provides comfort for extended listening sessions. The detachable IPX cable system offers flexibility and ease of replacement.
Sound Signature
You're probably looking to see how these IEMs stack up on sound. We'll share our thoughts here, although keep in mind this information tends to be anecdotal and subjective.
ESR MKII Sound Signature
The ESR MKII is built around accuracy and balance, making it ideal for professionals or listeners who want to hear music exactly as it’s recorded.
Its bass is tight and controlled, never overpowering the mix. The midrange is clean and transparent, bringing out vocals and instruments with lifelike clarity - perfect for mixing or critical listening. The treble is extended yet smooth, revealing subtle details without harshness, ensuring long listening sessions stay fatigue-free. This combination gives you the confidence to make precise judgments on recordings while still enjoying natural musicality.
Aspire 3 Sound Signature
The Aspire 3 delivers a balanced sound profile with a full-bodied midrange and a wide soundstage. The dynamic driver provides a tight and textured low end, while the balanced armatures handle the mids and highs with clarity and detail. The treble is smooth and naturally rolled off, ensuring fatigue-free extended listening sessions. The overall tuning is neutral, making it suitable for a variety of genres and professional monitoring applications.
Price and Value
At $1,099, the ESR MKII is a strong value proposition for professionals and purists. Its hybrid BA + EST design, resonance-free housing, and neutral tuning make it a cost-efficient reference monitor without unnecessary frills. The ESR MKII features high-quality resin shells with brushed aluminum faceplates, alongside a premium braided cable for enhanced sound and aesthetics.
Priced at $649.99, the Aspire 3 positions itself as a mid-tier offering in 64Audio's lineup. With the Aspire 3, you get 64Audio sound quality and technologies without the premium price tag associated with their flagship models. The overall build quality, comfort, and sound performance offer strong value for musicians and audiophiles looking for a reliable and accurate in-ear monitor for home, studio, and stage use.
Our Thoughts
Get the ESR MKII IEM if you're looking for a flat, accurate, and detailed sound for music production or mixing. The ESR MKII's reference-grade sound will help reveal subtle details in music, making it a joy to use for mixing and mastering at home or in the studio.
The Aspire 3 is ideal for musicians, audio engineers, and audiophiles who want a balanced and accurate in-ear monitor for both live performances and studio use. Its neutral tuning and comfortable fit make it suitable for extended listening sessions, while its durable construction ensures reliability in demanding environments. If you're looking for a neutral sound signature, ergonomic design, and reliable performance across various audio sources, the Aspire 3 is a solid choice.
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