Presenting
A refined evolution based on original design, SONORA SE features updates both inside and out. Designed for long listening, the new balanced profile delivers a wide presentation of exceptional resolution and layering. Its elevated sonic refinement is matched with new housing colors that unites acoustic brilliance with visual sophistication.
The low frequencies are powered by dual dynamic drivers configured in an isobaric arrangement. This consists of two drivers being placed together working to produce bass that is both deep and controlled. It is particularly effective in eliminating phase distorion and reducing unwanted resonances, resulting in a bass response that is full, powerful, and distortion-free.
The midrange is handled by four balanced armature drivers that delivers the speed, clarity, detail and resolution necessary to enhance layering and immersion.
The highs are managed by two electrostatic drivers. Renowned for its unparalleled speed and accuracy, highs are clean and detailed and finely tuned to prevent harshness or sibilance.
Aiding all drivers is the new 6-way crossover network that assists blending frequencies seemlessly to elevate sonic profile.
SONORA SE features the latest anodized aluminum housing as the original with fit improvements and innovation in manufacturing with incorporating additional 7-axis CNC and engraving machineries to produce one of the most complex designs made for earphones. Each part is finely polished then anodized followed by being cryogenically treated to strengthen surface scratching and preventing component damage from drops. The incorporation of an all-aluminum housing also provides an acoustically inert environment, minimizing unwanted vibrations and resonances that can alter the intended tuning. The result is a clean audio experience that allow the drivers to perform at its best. The new deep black shell paired with a dark burgundy faceplate presents a more mature and luxury aesthetic, perfectly complimenting the newly refined tuning.
SONORA SE comes with a dedicated 3D printed acoustic chamber to precisely control acoustics and ensure tuning consistency.
To further provide a seamless and consistent connection between drivers, we implement two proprietary wires designed in-house specifically for IEMs. Known as Copper XS and Silver XS, each Ultra Pure OCC wire serves as the "arteries" and are strategically placed to specific drivers to optimize signal flow across all frequencies.
Connection between IEM and cable play a critical role in signal integrity and durability. We implement our in-house designed 0.78mm 2-pin connectors made out of tellurium copper with rhodium plating. This high-end combination provides the most conductivity known in audio application that far exceeds standard brass connectors used on the market. This results in a cleaner and consistent signal and improved channel balance. The slight recessed connection placement makes it ideal for long term stability and reliability.
SONORA SE is powered by our limited Silver Plated Copper XL cable. It is comprised of two 18AWG UP-OCC wires featuring 36 strand groups that eliminate electrical resistance to improve output power, making it more efficient to drive SONORA SE on any source. Varied dampening cores are implemented for excellent ergonomics, making it perfect for both home and on-the-go use. Comes matching rhodium plated 2-pin connectors, exclusive y-splitter, and your choice of our in-house designed terminations.
SONORA SE In-Ear Monitors
SPC XL Cable
Leather Storage Case
Leather Earphone Insert + Stand
Leather Storage Pouch
Leather IEM Bag
Leather Cable Organizer
Metal Eartip Card
Cleaning Tool
Cleaning Cloth
PLUSSOUND Silicone Eartips (S,M,L)
Comply Foam Eartips (S,M,L)
PLUSSOUND Hybrid Eartips (S,M,L)
Metal Warranty Card
Digital Start Guide
2 Year Warranty
T E C H N I C A L
S P E C I F I C A T I O N S
General visualization of SONORA SE tuning. Technicalities (i.e. layering, imaging, etc.) are not shown.
Driver Count | Eight per side
Driver Design | Tri-Hybrid (Dynamic, Balanced, EST)
Drivers Used | Two 10mm Dynamic Drivers (for Low and Sub Low frequencies), Four Balanced Armatures (for Mid-Low, Mid, and Mid-High frequencies), Two Electrostatic Drivers (for High and Super High frequencies)
Crossover | New 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 + Silver XS (In-house designed cryogenically treated UP-OCC litz with proprietary PS Insulation)
Impedance | 10 ohms @1kHz @1mW
Sensitivity | 110 dB @1kHz
Frequency Response | 10hz - 40kHz
Cable | In-house, limited SPC XL cable with exclusive two-tone y-splitter
R E V I E W S
"I really have enjoyed the time with SONORA SE, not often that it comes out IEMs tuned differently and more exciting. The nuanced and authoritative bass is a treat, I know I am not alone in loving the thicker bass tunings that were more prevalent in tunings years back… Midrange is also very rich and colored, I would say it's smooth and full without the brighter elements getting too intense. Highs are also controlled and smooth, I would say natural and airy without being bright… All of this is packaged into a nice design that is very unique and special, and also feels very premium due to the aluminum chassis and unique textured outer. But for sound alone, it rides along as one of my top favorites from 2025"
Leonarfd, head-fi.org
“The whole signature sits up straight with a reference-leaning tuning, but there’s a friendly warmth tucked in, so it never turns clinical or dry. Resolution and micro-detail are top-notch. It pulls information out of tracks easily, but it does it in a way that feels effortless, not like it is trying to impress you with forced brightness or exaggerated contrast.The bass is also a big part of why it keeps pulling me back. It hits with authority, carries texture, and stays controlled, so the fun never comes at the cost of cleanliness. The bass is one of the reasons “one more song” keeps converting into a two-hour spiral. Treble is the little dash of hot sauce: it lifts the top, keeps the lights on, and stops the whole dish from tasting dull, but never burns your tongue. Pair that with the confident technical delivery, strong dynamics, and precise imaging, and the SONORA SE feels like a complete package... The PLUSSOUND SONORA SE earns an easy recommendation from me, and now I’m twitchy to see what else PLUSSOUND has hiding in the basement.”
Nihal, headfonics.com