ASTROTEC Archimedes Review

 

Introduction:

The ASTROTEC Archimedes is presented as an in-ear monitor featuring a distinct dual-driver configuration. This model incorporates a planar magnetic driver, designed to address typical distortion characteristics associated with conventional dynamic and balanced armature drivers, alongside a 9-layer PZT ceramic vibrating plate intended to contribute to high-frequency resonance. This dual-driver system, housed within a precisely crafted enclosure, aims to deliver high transient response and low distortion, with the objective of providing a clear acoustic experience. The earpieces are constructed from high-precision CNC machined metal, combining aesthetic considerations.

This review aims to assess the Archimedes’ driver technology, design, build quality, and sonic performance within its market segment.

 

 

Disclaimer:

I would like to thank ASTROTEC for providing the Archimedes for review purposes. I am not affiliated with ASTROTEC beyond this review, and the opinions expressed here reflect my genuine and unbiased impressions of the product.

 

Price & Availability: 

The ASTROTEC Archimedes IEM is priced at $129.00 USD. More information’s can be found under the link below;

• ASTROTEC Archimedes In-Ear Monitor

  

Package & Accessories:

The ASTROTEC Archimedes is supplied in a compact, rectangular black retail box. The upper surface displays an illustration of the monitors and associated product branding.

The package includes: 

• 1 x pair of ASTROTEC Archimedes In-Ear Monitors
• 1 x detachable cable with modular 3.5mm single-ended and 4.4mm balanced plugs
• 6 x pairs of Silicone Ear Tips (1 pair came pre-installed)
• 1 x Carrying case
• 1 x Cleaning brush
• 1 x Print Material

  

Design & Build Quality:

The ASTROTEC Archimedes’ design immediately highlights precise execution, with every element contributing to a cohesive aesthetic and functional purpose. The earpieces are robustly constructed from high-precision CNC machined stainless steel cavities, indicating the use of durable and precisely manufactured materials for its core structure. The precision CNC machining process is distinctly evident in the clean lines and component integration of the shell, which features a clean, textured finish. The overall form factor of the monitors is slightly larger than the average in-ear monitor currently available in the market. The finish on the main body of the earpiece is a dark grey, providing a uniform appearance that is less prone to showing fingerprints. Overall, the design presents an aesthetic with simple, bold, and curved ontours.

The faceplate of the Archimedes is a prominent visual feature. It is crafted from a solid block of high-precision CNC Stainless Steel. The surface shows an intricate pattern or refined texture, which interacts with ambient light. The precision shaping and finishing of the stainless steel contribute to its visual presentation. The bezels surrounding the faceplate feature a contrasting polished or chamfered edge, which provides a visual distinction from the main shell. The shape of the faceplate is a modified triangular or shield-like form with gently curved edges.

The top section of each earpiece houses the 0.78mm 2-pin connectors. These connectors are integrated into the metal shell, appearing to be flush with the surrounding surface. This integration aims to provide a stable connection point. An acoustic opening is present immediately adjacent to the 2-pin connector. On the upper part of the left earpiece, near the 2-pin connector, the word “Archimedes” is present. The 2-pin connectors are a standard interface, facilitating cable interchangeability.

The inner surface of the Archimedes is contoured to facilitate placement within the ear concha. L/R directional markings are present on this surface. The sound nozzle, constructed from metal, is angled to direct sound into the ear canal. The length of the sound nozzle is relatively short, and its diameter is smaller than typical for in-ear monitors in the market. A second acoustic opening is also present near the nozzle. A fine metal mesh filter is integrated at the tip of the nozzle, designed to protect internal components from debris. The smooth surfaces of the inner shell are intended to minimize pressure points during extended wear. The internal acoustic pathway is optimized for sound delivery.

 

Detachable Cable:

The included cable is a transparent copper cable, featuring a braided construction. This allows the conductors to be visible while providing flexibility and resistance to tangling. The braiding pattern is tight. The hardware components of the cable, including the Y-splitter and connector housings, are typically fabricated from metal, complementing the earpiece construction.

The 0.78mm 2-pin connectors at the IEM end are designed for compatibility with the earpieces. The cable is designed for broad compatibility, including both a 4.4mm balanced adapter and a 3.5mm adapter, allowing use with a wide range of audio sources. The cable’s overall construction is consistent with quality standards for this product type.

 

Acoustic Architecture and Driver Integration:

The Archimedes employs a dual-driver architecture, combining a newly developed planar magnetic driver and a 9-layer PZT piezoelectric ceramic driver. This system utilizes a complex internal acoustic structure specifically developed to optimize magnetic flux and sound expression from its planar driver. This design approach seeks to address potential “break-up distortion” characteristics sometimes associated with traditional dynamic and BA drivers.

The internal components demonstrate a high degree of miniaturization, with nine distinct acoustic elements contained within a space less than 5mm. A core element is the 2-micron ultra-thin diaphragm, which is precisely laser-etched to facilitate accurate audio reproduction. The 9-layer PZT ceramic vibrating plate is engineered to enhance high-frequency resonance and detail. Further refinement of the system’s tuning is achieved through the integration of two metal tuning dampers, which are stated to be a result of acoustic research. This intricate internal arrangement is designed to facilitate high transient response and low distortion, contributing to a clear acoustic presentation and aiming for accurate reproduction of sound sources. This comprehensive internal design is intended to contribute to the IEM’s overall sonic performance.

 

 

Fit, Comfort & Isolation:

Despite the ASTROTEC Archimedes’ slightly larger-than-average form factor, its ergonomic shell design is crafted to provide a secure and comfortable fit. The contoured inner surface is intended to sit naturally within the ear concha, aiming to minimize pressure points during extended listening sessions.

The included selection of silicone ear tips allows to achieve an optimal seal and stable fit, which is crucial for both comfort and sound isolation. While the sound nozzle is relatively short, proper ear tip selection helps ensure effective sound delivery and a secure placement within the ear canal. The overall design prioritizes a balance between the robust build and user comfort, contributing to a stable wearing experience.

 

Technical Specifications: 

• Model: ASTROTEC Archimedes
• Driver diameter:8 mm (for the planar magnetic driver)
• Driver: Planar magnetic driver (14 magnets on both sides, high magnetic flux design, 2 micron ultra-thin composite diaphragm, micron-level etching), 9-layer PZT piezoelectric ceramic vibration plate
• Sensitivity: 106 dB SPL/mW
• Impedance: 16 Ω
• Frequency response range: 5 Hz – 25,000 Hz
• Housing material: High-precision CNC machined stainless steel cavities
• Included cable: Transparent Copper Cable with 4.4mm balanced and 3.5mm adapters
• Connector:78mm 2-Pin Connectors
• Rated output: 3 mW

 

Drivability & Pairing:

The ASTROTEC Archimedes is characterized by an impedance of 16 Ω and a sensitivity of 106 dB SPL/mW, making it highly efficient and suitable for a broad spectrum of audio sources. Its included cable, equipped with both 4.4mm balanced and 3.5mm adapters, ensures extensive compatibility. This design allows for effective pairing with devices ranging from smartphones and USB DAC dongles to dedicated portable digital audio players (DAPs), delivering sufficient volume without the need for high-power amplification. The Archimedes thus proves adaptable to various audio environments.

 

Equipment’s used for this review:

• IEM’s              : ASTROTEC Archimedes, KEFINE Quatio
• DAP&DAC’s  : iBasso DX340, HiBy R3Pro II

 

Albums & tracks used for this review:

• Norah Jones – Come Away With Me (Apple Music Lossless)
• Adele – My Little Love (Apple Music Lossless)
• Sarah McLachlan – Angel (Flac 24bit/48kHz)
• Sertap Erener – Aşk (Flac 16bit/44.1kHz)
• Edith Piaf – Non Je Ne Regrette Rien (Flac 16bit/44.1kHz)
• Diana Krall – So Wonderful (DSF)
• Aretha Franklin – I Say A Little Payer (Flac 24bit/96kHz)
• Michael Jackson – Billie Jean (Flac 24bit/96kHz)
• George Michael – Don’t Let the Sun Go Down on Me (Flac 24bit/192kHz)
• David Bowie – Heroes (Flac 24bit/192kHz)
• Elton John – Rocket Man ((Flac 24bit/96kHz)
• Barry White – Just The Way You Are (Flac 24bit/48kHz)
• Isaac Hayes – Walk On By (Flac 16bit/44.1kHz)
• Sting – Englishman in New York – (Flac 24bit/48kHz)
• Eric Clapton – Wonderful Tonight (Flac 24bit/96kHz)
• Dave Gahan – Kingdom (Tidal Hi-Fi)
• Radiohead – Live in Berlin “Album” (Apple Music Lossless)
• Radiohead – Pyramid Song (Apple Music Lossless)
• U2 – Sunday Bloody Sunday (Flac 16bit/44.1kHz)
• Muse – Hysteria (Flac 24bit/96kHz)
• Red Hot Chili Peppers – Nobody Weird Like Me (Flac 24bit/48kHz)
• Michael Jackson – Billie Jean (Flac 24bit/96kHz)
• Bear McCreary’s – Valkyries (Deezer HiFi)
• Bro Safari, UFO! – Drama (Deezer HiFi)
• Armin Van Buuren – Vini Vici (Flac 16bit/44.1kHz)
• Daft Punk – Instant Crush (Flac 24bit/96kHz)
• Daft Punk – Doin’ it Right (Flac 24bit/96kHz)
• Lorde – Royals (Flac 24bit/48kHz)
• Massive Attack – Angel (Flac 24bit/48kHz)
• Toutant – Rebirth (Deezer HiFi)
• Gogo Penguin – Raven (Flac 24bit/192kHz)
• Gogo Penguin – Murmuration (Flac 24bit/192kHz)
• Portishead – It Could Be Sweet (Apple Music Lossless)
• Hans Zimmer – The Dark Knight OST (Flac 24bit/96kHz)
• Max Richter – On the Nature of Daylight (Flac 24bit/96kHz)
• Charly Antolini – Duwadjuwandadu (Flac 24bit/192kHz)
• Tchaikovsky – Symphony No. 5 (Flac 16bit/44.1kHz)
• Ferit Odman – Look, Stop & Listen (Flac 24bit/192kHz)
• Chopin – Nocturn No. 20 In C-Sharp Minor (Flac 16bit/44.1kHz)
• Clair de Lune – Claude Debussy (Spotify)
• Fazıl Say – Nazım Oratoryosu (Live) (Flac 16bit/44.1kHz)
• Vivaldi – Le QuarttroStagioni “The Four Season” (Apple Music Lossless)
• Pink Floyd – Shine On You Crazy Diamond (Apple Music Lossless)
• Miles Davis – So What (Deezer HiFi)
• Otto Liebert& Luna Negra – The River (Flac 24bit/192kHz)
• Lunatic Soul – The Passage (Flac 16bit/44.1kHz)
• Deftones – My Own Summer (Shove it) (Flac 16bit/44.1kHz)
• Metallica – Dyers Eve (Flac 24bit/96kHz)
• Metallica – Sad but True (Flac 24bit/96kHz)
• Opeth – Windowpane (Flac 16bit/44.1kHz)
• Megadeth – Sweating Bullets (Tidal Hi-Fi)
• Rush’s – Tom Sawyer (Flac 16bit/44.1kHz)
• Slayer – Angel of Death (Spotify)
• Liquid Tension Experiment 2 – Acid Rain (Spotify)
• Yosi Horikawa – Bubbles (Spotify)

 

The Sound:

The ASTROTEC Archimedes delivers a cohesive audio profile that leans toward a clear and slightly bright tone, crafted by its planar magnetic and piezoelectric ceramic driver pairing. This combination creates a dynamic soundscape with a subtle low-end enhancement and a stretched high-end, appealing to listeners who enjoy a broad spectrum of musical styles. The design prioritizes sharp detail and a midrange-centric foundation, though it may not fully meet the expectations of those desiring profound bass depth or ethereal treble extensions, offering instead a unified and engaging listening experience.

 

Bass:

The ASTROTEC Archimedes’ bass, managed by its 14.8mm planar magnetic driver, creates a solid foundation with a noticeable lift in the lower mids that adds a touch of warmth. In Massive Attack’s “Angel,” the bass provides a steady underpinning that supports the track’s atmospheric vibe, with the kick drum delivering a clear, rhythmic pulse that’s easy to follow. Metallica’s “Sad but True” showcases the bass keeping pace with the driving rhythm, where the snare’s sharp attack and the bass guitar’s low notes work together, and the driver’s quick response captures the faint rumble of tom fills during transitions. In Gogo Penguin’s “Murmuration,” the bass lines thread through the piano chords and light percussion, maintaining separation even as the track builds in complexity, with each note retaining its distinct place. However, the very lowest frequencies don’t extend as far as some might expect for electronic or hip-hop tracks, showing a slight roll-off that limits deep sub-bass impact. This bass offers a structured and lively character, making it a good match for rock or acoustic music where it complements the midrange without overpowering it.

 

Midrange:

The midrange of the Archimedes stands out with a natural and open tone, placing significant emphasis on vocals and instruments through a forward upper range that acts as a core element of the sound. In Miles Davis’ “So What,” the trumpet produces a smooth, brassy tone that carries a clear resonance, with the lower mids providing a steady backdrop for the upright bass’s plucked strings, ensuring both instruments remain distinct. For Pink Floyd’s “Shine On You Crazy Diamond,” David Gilmour’s male vocals come through with a rich, expressive quality, supported by a slight upper-mid lift that enhances his heartfelt delivery without pushing it into harshness, while the background instrumentation stays balanced. Clare Torry’s female vocals in the same track deliver a powerful yet controlled performance, with the piezoelectric driver adding subtle detail to her layered harmonies, revealing the texture of her breaths and vocal shifts. The range also handles electric guitar riffs and synth pads effectively, though it can feel a bit thin in densely layered tracks. Its clarity and separation make it well-suited for music where vocals and instruments need to stand out clearly.

 

Treble:

The Archimedes’ treble, produced by its 9-layer PZT piezoelectric ceramic vibration plate, is characterized as crisp and extended, enhancing the mid-high frequency response with good detail and resolution. This vibration plate contributes to a clear and present high-end, offering a sense of openness while maintaining composure in complex passages, with no noticeable splashiness or sibilance. Transients are quick and precise, providing sufficient energy and detail retrieval for a transparent listening experience. In Charly Antolini’s “Duwadjuwandadu,” the treble handles the sharp clacks of the drumsticks and the bright shimmer of cymbals with clarity, while the high-pitched accents of the flutes and brass cuts remain distinct during fast drum solos. Megadeth’s “Sweating Bullets” showcases the treble managing the aggressive edge of guitar riffs and the crisp snap of cymbal hits, keeping the rapid tempo clear without distortion, while the high-end vocal harmonies retain their definition. The highs extend well but taper off slightly at the top, lacking the fullest airiness for ambient effects or the highest orchestral notes. The quick response ensures complex sections stay organized, making it suitable for long listens, though it may highlight flaws in lower-quality recordings.

 

Soundstage & Imaging:

The Archimedes provides a good soundstage for its price, offering an immersive feel in Tchaikovsky’s “Symphony No. 5,” where strings and brass are well-separated across the space. In Pink Floyd’s “Shine On You Crazy Diamond,” imaging is accurate, with guitars and vocals positioned clearly, allowing the synth layers to spread out naturally. The layout gives instruments room to be heard individually, enhancing the experience of live or orchestral recordings.

 

Comparison:

 

ASTOTEC Archimedes versus KEFINE Quatio:

The ASTROTEC Archimedes and the KEFINE Quatio utilize different driver technologies. The Archimedes employs a 14.8mm planar magnetic driver for low and mid-frequencies and a 9-layer PZT ceramic driver for highs. This configuration produces a bass presentation characterized by clarity, impact, and low distortion, with a focus on speed and texture, supported by its strong magnetic architecture and ultra-thin diaphragm. The Quatio, utilizing dual dynamic drivers and dual balanced armatures, offers a bass response that is robust and dynamic, with a tendency towards a warmer character. While both models provide a satisfying low-end, the Archimedes’ planar bass offers faster transient response and a more uncolored signature, whereas the Quatio’s setup presents a fuller low-end, supplemented by external tuning nozzle options.

In the midrange, the Archimedes’ planar magnetic driver provides a detailed and clear presentation with low distortion. Vocals are rendered with presence and clarity. Instruments sound detailed and separated. The Quatio’s midrange also aims for clarity, with a natural warmth. Both models offer engaging midrange presentations; however, the Archimedes offers a more transparent and resolving character due to its planar driver technology. The Quatio’s external tuning nozzles provide user adjustability.

For treble performance, the Archimedes utilizes its 9-layer PZT piezoelectric ceramic vibration plate to deliver a crisp and extended sound, with an emphasis on airiness and enhanced detail/resolution in the mid-high frequencies. The Quatio’s treble, via its dual BA drivers, also presents crispness and articulation; however, its high-frequency extension appears to differ from the Archimedes’ PZT driver, which achieves a more expansive high-frequency reach.

Regarding soundstage, the Archimedes delivers a broad and defined soundstage with precise imaging, facilitating instrument localization and a strong sense of depth and width, partly due to the characteristics of the planar driver and the complex acoustic system. The Quatio also presents a commendable soundstage, offering good separation. While both provide a spacious experience, the Archimedes offers a refined and layered sonic presentation.

 

Conclusion:

The ASTROTEC Archimedes presents a compelling option within the sub-$150 in-ear monitor market, distinguished by its innovative and powerful dual-driver configuration. This design integrates a large 14.8mm planar magnetic driver with a 9-layer PZT piezoelectric ceramic vibrating plate, all housed within a precisely CNC machined stainless steel enclosure. This sophisticated setup aims for high transient response and low distortion, intending to deliver a clear, balanced, high-resolution, and detailed sound profile. The resulting sonic presentation is characterized by a controlled and agile bass, though its sub-bass may not be exceptionally prominent, a clear midrange, and an extended, airy treble, collectively contributing to a spacious soundstage and an overall clear acoustic experience.

 

Pros & Cons:

• + Dual-driver system blends planar magnetic and PZT ceramic for low-distortion, dynamic sound
• + Agile bass delivers clean low-end, ideal for rock and acoustic
• + Clear midrange enhances vocals and instruments in complex tracks
• + Airy treble provides crisp, extended highs without harshness
• + Wide soundstage offers precise imaging for orchestral and live music
• + Premium CNC-machined stainless-steel build ensures durability
• + Versatile braided copper cable with 3.5mm and 4.4mm interchangeable adapters

 

• – Larger form factor
• – Short, narrow sound nozzle needs careful ear tip selection
• – Limited sub-bass depth
• – Bright treble may expose flaws in lower-quality recordings

 

Thank you for the Read!