NA9S (Universal)

The NA9S is the semi-flagship model in the Nostalgia Audio Professional Series, designed specifically for instrument monitoring and setting new standards for professional sound reproduction. It features an innovative tri-brid architecture that combines balanced armature drivers, electrostatic drivers, and custom mini planar drivers, leveraging the strengths of each technology.

Balanced armature drivers provide exceptional resolution, while electrostatic drivers deliver remarkable treble extension. Mini planar drivers enhance ultra-high frequency performance, capturing the texture and detail of various instruments.

Developed with input from top music producers and live engineers, the NA9S addresses key challenges in monitoring, such as imaging accuracy and dynamic stability. The result is a professional tool that maintains clarity and precision even in high-pressure environments.

Ideal for stage and studio use, the NA9S not only meets the demands of professionals but also offers audiophiles a deeply immersive listening experience, allowing them to truly connect with the essence of musical performance.

Core Structure: Tri-brid Architecture and Precision Full-Frequency Interpretation

The NA9S features an innovative "5 Balanced Armatures + 2 Electrostatics + 2 Custom Mini Planar Tweeters" tri-brid structure. This system, along with a five-way crossover, divides frequencies into layers—2 Low, 2 Mid-High, 1 High, 2 Ultra-High, and 2 Extremely High—achieving a frequency response of 15Hz to 45kHz for a cohesive sound.

In the low frequencies, two custom balanced armature drivers create a solid foundation, delivering depth and richness to bass lines and kick drums.

Two specialized balanced armature drivers manage mid-high frequencies, focusing on vocal clarity and instrument execution. They accurately portray vocals and render guitars, woodwinds, and brass with exceptional tonal separation.

A dedicated balanced armature driver enhances high frequencies, adding brightness for clearer instrumental details. The two mini planar tweeters capture rapid transients, enhancing sound resolution and making high-frequency details vivid.

Lastly, two electrostatic drivers handle extreme highs, creating a transparent soundstage. Their fast response restores an airy quality, enriching spatial representation while keeping high frequencies light and nuanced.

 

Sound Performance: Neutral Transparency and Ultimate Analytical Monitoring

The NA9S is designed around a philosophy of "neutral transparency, high analytical capability, and rapid transients," making it ideal for instrument monitoring and an exceptional auditory experience for both music creators and audiophiles.

In low frequencies, it offers solid control and clear layering, providing robust texture and discernible details in bass instruments without muddiness.

The mid frequencies deliver an articulate and dense listening experience, ensuring clarity for vocals and various instruments, capturing emotional and intricate details with superior fidelity.

In the highs and ultra-high frequencies, the blend of balanced armature drivers and mini planar tweeters enhances sound resolution, amplifying the clarity of high-frequency details and adding rich layers to the music. Extreme highs are delicate yet warm, accurately depicting subtle harmonic variations. This results in a high-resolution, expansive soundstage that offers both precision and depth.

  

Elevated Configuration: Titanium Metal Nozzle Technology

The NA9S bridges entry-level and professional models, embodying the brand's high-end acoustic DNA with its high-rigidity titanium metal nozzle design. This technology leverages titanium's low resonance to effectively reduce cavity noise, while the calibrated conduit length and aperture enhance sound purity and spatial dimensionality.

As a result, the NA9S offers a three-dimensional listening experience that excels in its class, accurately reproducing spatial details in recordings. Its lightweight, ergonomic universal mold and superior airtight craftsmanship ensure a stable and comfortable fit for long recording sessions, vocal practice, or daily use.

 

Customized Balanced Armature Mini Planar Tweeter

The balanced armature mini planar tweeter represents a significant advancement in balanced armature technology, offering numerous advantages. It excels beyond traditional drivers in high-frequency extension and can deliver sound at higher pressure levels, maintaining clarity and quality across various volumes.

These tweeters provide a smooth, warm tonal quality, effectively capturing subtle harmonics and enhancing high-frequency details. This richness brings each musical nuance to life, creating a more immersive listening experience that feels like being at a live concert.

Additionally, their rapid transient response ensures precise reproduction of quickly changing musical notes, infusing each note with vitality. This engagement elevates the appreciation of intricate musical passages and vibrant performances. The balanced armature mini planar tweeter is essential to the NA9S, significantly redefining standards in instrument monitoring.

 

Ultra-Fast Transients: Capturing Micro Details in Milliseconds

The NA9S excels in resolution and speed, allowing it to capture even the faintest sounds—be it the gritty texture of guitar strings, the nuanced bowing on strings, or subtle harmonics in larger ensembles. Its ultra-fast transient response ensures effortless articulation across instruments, from the rapid strumming of electric guitars to the sharp, powerful strikes of percussion.

Each nuance is reproduced with impeccable accuracy, devoid of trailing sounds, meeting the professional musician’s demands for immediate feedback and sonic precision. This capability not only enhances monitoring but also enriches the overall listening experience, ensuring that every detail is vividly brought to life.

 

Easily Driven: Flagship Architecture, Portable Release

Despite its advanced acoustic architecture, the NA9S offers excellent drivability. With innovations in its custom mini planar driver technology, it features a low impedance of just 15 Ohms and a high sensitivity of 114dB. This ensures remarkable adaptability, allowing it to be easily powered by portable devices like mobile phones and stage mixers while fully showcasing its potential with high-end desktop players.

Wherever you are, the NA9S consistently delivers a complete and rich musical performance, making it the ideal choice for both on-the-go listening and professional use.

 

Unleashing Monitoring Potential: The Nostalgia Audio Fugue Hybrid Cable

The Nostalgia Audio Fugue represents a significant step forward in high-fidelity transmission, engineered as the ideal companion for the Professional S Series. This cable utilizes a premium hybrid blend of 5N OFC Copper and Silver-plated 5N OFC Copper to achieve superior instrument monitoring. Adopting the brand’s high-standard Litz Type 4S structure, the Fugue leverages the unique properties of its hybrid materials to create a sophisticated sonic profile. The 5N OFC Copper anchors the sound, providing warmth and substantial body to the low and mid frequencies, while the Silver-plated 5N OFC Copper handles the upper registers to maximize transparency and transmission speed. This synergy effectively mitigates skin effect, ensuring that every harmonic nuance is preserved.

The result is a reference-grade sound signature defined by neutrality and detail. The low frequencies are rendered with tightness and impact, offering a cohesive bass response, while the mids are richly textured with excellent instrument separation. The treble extends with an airy quality that remains smooth enough for long listening sessions. By faithfully conveying the true depth and clarity of music, the Fugue stands as an essential tool for musicians and enthusiasts seeking to elevate their auditory experience.

 

Dual-Material Custom Sound: NA9S Ear Tips

To enhance the NA9S's sound potential, it includes two exclusive ear tips with distinct materials. The Nostalgia Audio XWB ear tips optimize high frequencies for enhanced treble and detail, delivering a refined auditory experience. Conversely, the LSR ear tips, made from liquid silicone, provide balanced performance across all frequencies, offering a natural and comprehensive sound quality for an authentic listening experience.

 

Technical Specifications

Drivers: 5 Balanced Armature Drivers

Crossover: 5-Way 

2 Low, 2 Mid-High, 1 High, 2 Ultra-High,2 Extremely High

Impedance: 15 Ohms @ 1 kHz

Frequency Response: 15 Hz - 45 kHz

Sensitivity: 114 dB @ 1 kHz, 1 mW

 

Packaging Includes:

NA9S earphones

Earphone Cleaning Tool

Earphone cotton Mesh

Large, Medium, and Small XWB Ear Tips

Large, Medium, and Small LSR Ear Tips

Dekoni M-Code Foam

Portable earphone Protection Case

3.5mm to 6.35mm Adapter

1.6m 3.5mm Silver-Plated Cable

4.4mm OFC Copper and Silver-Plated Copper Hybrid Upgrade Cable Fugue