<i>A L L E G R O</i>
<i>A L L E G R O</i>

A L L E G R O



This is definitely a top tier IEM.
Audio123, Head-fi.org
Allegro can easily go head-to-head with other flagships!
Alex, Twister6 Reviews
... I am blown away by the Allegros so far. For my tastes they are the best all-rounder IEM I have ever heard."
fejnomit, Head-fi.org
PLUSSOUND Allegro is a lot more mature than I was expecting and has enough about it to give the current top-tier hybrid monitors a run for their money.
Marcus, Headfonics.com
Allegro is a musical, balanced and engaging set that deserves its perch as TOTL and flagship.
jwilliamhurst, Head-fi.org
The new PLUSSOUND Allegro is certainly a flagship IEM with TOTL technical performance and musical delivery.
Berkhan, Headfonia.com
Allegro's sound signature is truly excellent...
Main Character, head-fi.org
The resulting product, Allegro, lives up to its name by delivering a lively and snappy presentation. Its technical performance is truly impressive.
iegems.nk-tran.com
PLUSSOUND Allegro is an engaging IEM with the right amount of technicalities and musicality... Highly recommended.
Weexisttocease, head-fi.org
















Introducing
ALLEGRO, our new high-end universal fitting in-ear monitor for audiophiles and musicians. Built from the ground up with years spent in research and development, ALLEGRO delivers a world-class experience that pushes the envelope in design and sound.






ALLEGRO
is a high driver-count earphone comprised of two 10mm dynamic drivers, six balanced armature drivers, and four electrostatic drivers.

Each frequency is finely tuned. Lows are balanced and well-controlled. Mids are resolving with excellent detail retrieval. Highs are refined and articulate.

Overall sound quality is characterized as balanced with an enhanced mid-high presentation for a highly detailed and clean sound. Perfect for many musical genres.
































By using 7-axis CNC machinery used in the aerospace industry, we were able to mill thick aluminum into intricate and detailed designs for ALLEGRO.

Parts are meticulously polished and anodized before being cryogenically treated to strengthen material that will enhance scratch resistance and prevent internal damage from accidental drops.

With a dark bronze polygonal faceplate and gloss black diamond pattern body, its design language represents elegance and modernity.





ALLEGRO
comes with in-house designed rhodium plated tellurium copper 0.78mm 2-pin connectors. With over a decade of experience in developing and producing connectors for high-end cables, we implemented our take of an industry-standard connection into our earphone that will substantially improve durability, reliability, and conductivity.





























Drivers are precisely positioned and placed inside the earphone using 3D printed acoustic chamber to provide exact LR channel balance.

A new in-house developed internal wire called
Copper XS, based on the larger PLUS (+) wires for cables, serves as the connection between drivers to maximize conductivity and offer a more seemless and consistent overall performance.





ALLEGRO
comes with an exclusive curated Copper+ cable. All cables are designed and built in-house using our proprietary high end materials. They feature custom UP-OCC wires that pair best with your new earphone, along with an all-new two-tone y-splitter, rhodium plated 2-pin connectors, and your choice of our in-house designed termination.

Available in the following terminations:
2.5mm TRRS, 3.5mm TRS, gold plated 4.4mm TRRRS, rhodium plated 4.4mm TRRRS, 6.3mm TRS, 4-pin XLR, RSA/ALO, USB Type C





















O T H E R
F E A T U R E S

Leather Storage Case

Designed to be functional, spacious, and durable. On the outside, the case is made out of real genuine leather with gold plated metal zipper and a black zinc pull handle for a high quality feel and modern look. On the inside, it is made out of soft and scratch resistant felt material to keep everything from being damaged.

The included insert is perfect for carrying your ALLEGRO or any favorite earphone. The added wheel and spacious interior allows you to wrap and carry just about any cable on the market, regardless of length and thickness. Best part is the insert is removable in case you want to use the case to take a portable audio setup or multiple earphone/cable sets with you.

The pocket on top is made out of thick polyester material for carrying accessories such as adapters, cleaning tools, SD cards, and more.

In-House Designed Silicone Eartips

Developed for ALLEGRO and various IEMs, the medical-grade silicone material is used for their comfort and softness. The unique 1.6mm thick nozzle secures in place and reduces covering over sound bores when installed to keep sound linear and improve sound quality.

Comes in Small, Medium, and Large Sizes.

Additional Eartips Included

Symbio W Hybrid Tips

Hybrid provide the best of both worlds: Great seal of memory foam with the longevity of silicone. The result is an uncompromised option for preserving the upper frequencies, while forming a tighter seal that will improve the low end.

Comes in Small, Medium, and Large Sizes.

Comply Foam Tips

Engineered using signature viscoelastic foam to keep earphones in and stay comfortable. They enhance noise cancellation, allowing you to hear better at lower volumes to protect your ears.

Comes in Small, Medium, and Large Sizes.







T E C H N I C A L
S P E C I F I C A T I O N S



Driver Count / Twelve per side

Driver Design / Tri-Hybrid (Dynamic, Balanced, EST)

Drivers Used / Two 10mm Dynamic Drivers (for Low and Sub Low frequencies), Six Balanced Armatures (for Mid-Low, Mid, and Mid-High frequencies), Four Electrostatic Drivers (for High and Super High frequencies)

Crossover / 6-Way Network

Driver Organization / 3D Printed Acoustic Chamber

Outer / Polished, Anodized, cryogenically treated aluminum faceplate, body, and nozzle

Connector / In-House designed cryogenically treated 0.78mm rhodium plated tellurium copper 2-pin with PEEK insulation

Internal Wiring / Copper XS (In-house designed cryogenically treated Type 6 UP-OCC with proprietary PS Insulation)

Impedance / 10 ohms @1kHz @1mW

Sensitivity / 112 dB @1kHz

Frequency Response / 10hz - 40kHz

Cable / In-house handcrafted cables using custom UP-OCC Litz wires and in-house designed materials, including connectors, splitter, slider, and connector ends.




I N C L U D E D


Launch Edition
(Low quantity worldwide)

Allegro
Exo Series cable with Copper+ wires ($1050 value)
Leather Storage Case
Silicone Eartips (S,M,L)
Comply Foam Eartips (S,M,L)
Symbio W Hybrid Eartips (S,M,L)
Microfiber Cloth
Leather Cable Band
Cleaning Tool
Round Sticker
Digital Start Guide
Signed Thank You Card
2 Year Warranty