Two Dynamic Drivers, One Engaging Performance
The STA-Pro Ultra pairs the weight of a large dynamic driver with the finesse of a dedicated treble unit. Designed for listeners who enjoy both musical energy and clearly presented detail, these wired in-ear monitors use two dynamic drivers in each earpiece to reproduce different parts of the frequency range. The combination gives bass, vocals and upper-frequency textures their own acoustic roles, with tuning intended to bring them together into a cohesive performance. Whether your playlist moves through intimate vocal tracks, energetic electronic music or richly layered soundtracks, the STA-Pro Ultra is built to keep the experience involving.
Graphene and Titanium in Complementary Roles
An ultra-thin 10mm graphene diaphragm forms the foundation of the sound, covering the bass and lower midrange. Its lightweight, rigid construction is designed to respond readily to changing signals while maintaining control over diaphragm movement. This helps preserve the distinction between the impact of a drum, the sustain of a bass note and the body of a voice.
A separate 6mm dynamic driver with a titanium-coated diaphragm handles the higher frequencies. Its role is to reveal the finer edges of a recording, including cymbal shimmer, string articulation and the harmonics that give instruments their character. N50 neodymium magnets power the system, with a dual-magnet arrangement driving the larger unit. Together, the two drivers are tuned to combine rhythmic substance with an open, detailed upper range.
Acoustic Chambers Developed for Coherent Sound
The STA-Pro Ultra’s internal enclosure was developed through repeated acoustic simulations and tuning adjustments. Attention to cavity geometry and resonance control helps the two drivers work together, supporting clear transitions across the frequency spectrum. The objective is a presentation in which instruments remain distinguishable without losing the sense of a complete musical performance.
EarAcoustic’s tuning approach places equal importance on detail and listenability. Bass supplies depth and momentum, the midrange keeps vocals intelligible, and the treble adds definition to the arrangement. This balance is intended to make complex recordings easier to follow while retaining the atmosphere and emotional character of the music.
Purple and Silver with a Distinctive Finish
Purple accents and reflective silver surfaces give the STA-Pro Ultra a distinctive visual rhythm. The housings combine electroplated ABS resin with a zinc-alloy frame and glossy resin faceplates. The Year of the Snake design adds a decorative motif that gives the earphones a recognisable identity within the Silver Angel STA collection.
The sculpted inner surfaces are shaped for a secure in-ear fit, with the cable routed over the ears. Supplied silicone tips offer several fitting options, allowing you to find a comfortable seal. A suitable tip size helps maintain consistent bass response and passive isolation, making the fit an important part of getting the best from the earphones.
Detachable Cable and Straightforward Connectivity
The included 1.2m cable uses a mixed weave of oxygen-free copper and silver-plated oxygen-free copper conductors. Its flexible construction is intended to make everyday handling and storage convenient, while detachable 0.78mm two-pin connectors allow the cable to be replaced independently of the earpieces.
A 3.5mm stereo plug connects to compatible headphone outputs on audio players, laptops, DACs and headphone amplifiers. Smartphones without an analogue headphone socket require a suitable audio adapter or DAC. The wired design needs no charging, so you can move between listening sessions without managing another battery.
Specifications for Everyday Listening
With a nominal impedance of 18Ω and a specified sensitivity of 113dB, the STA-Pro Ultra is designed for use with a variety of portable audio sources. Its published frequency response is 10Hz–30kHz, and the pair contains four dynamic drivers in total: one 10mm graphene unit and one 6mm titanium-coated unit per side. These specifications make it a practical option for a compact listening setup, whether connected to a dedicated music player or a compatible portable DAC.
In the box:
- one pair of EarAcoustic STA-Pro Ultra Purple/Silver in-ear monitors,
- detachable 1.2m cable with a 3.5mm stereo plug,
- six pairs of silicone ear tips,
- zippered carrying case,
- user manual.
