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ACS VIORA PRO-MUSIC｜JANUS Mode Customized Stage Monitors

ACS VIORA PRO-MUSIC｜JANUS Mode Customized Stage Monitors

VIORA PRO-MUSIC — Dual Mode Design · Built for the Stage
A professional-level universal in-ear monitor with dual acoustic applications, designed for both critical listening in studio work and in high-SPL live performance.

Until 2026-02-28T16:00:00.000+00:00 Year of Horse Great Fortune Campaign on selected products

TAIWAN ONLY – Free Shipping OVER NT$500 on order

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Description
VIORA PRO-MUSIC—Dual Mode Design ‧ Built for the Stage
VIORA PRO-MUSIC is not a single tuning variation, but a dual-mode acoustic system designed to serve different professional environments.

While preserving VIORA’s expansive dynamic range and rapid transient response, it further optimizes performance for real-world stage applications. Even under high sound pressure levels, the sound remains clear, stable, and free from harshness. Vocals and midrange frequencies are slightly forward, precisely enhancing the presence of instruments and lead vocals, while seamlessly integrating with a powerful yet elastic low end that delivers the drive and air movement reminiscent of large studio monitor speakers.

Through the extended structure of the JANUS Sleeves, VIORA PRO-MUSIC alters the acoustic load of the ear canal, allowing the frequency response to better suit live stage environments by improving projection and spatial precision. In contrast, BASELINE mode maintains the original tonal balance and monitoring accuracy, making it ideal for studio use and critical listening.

This is not two different products, but one unified acoustic core operating under different acoustic terminal conditions to serve distinct professional needs.

VIORA PRO-MUSIC Dual Mode Frequency Response

BASELINE vs JANUS Sleeves Frequency Band Differences

Low Frequency (20–250Hz)
BASELINE
Delivers a naturally balanced low-frequency structure with deep extension and controlled response, maintaining full dynamic space and a sense of air movement.
JANUS SLEEVES
The extended custom sleeve modifies the terminal acoustic load, slightly increasing low-frequency density and focus. This provides more stable rhythmic support and concentrated energy in live performance settings.

Midrange (250Hz–2kHz)
BASELINE
Maintains a natural midrange proportion with accurate imaging, ideal for studio monitoring and detailed evaluation.
JANUS SLEEVES
Vocals and key instruments are subtly brought forward, improving intelligibility and projection in high SPL and reverberant live environments.

Upper Midrange (2–6kHz)
BASELINE
Preserves a clear, open soundstage with refined detail, remaining smooth and non-fatiguing.
JANUS SLEEVES
Changes in ear canal length slightly shift resonance behavior, redistributing energy within this critical range to enhance articulation and positional accuracy on stage.

High Frequency (7–20kHz)
BASELINE
Extends naturally and smoothly, delivering a wide soundstage and airy presentation while maintaining both accuracy and musicality.
JANUS SLEEVES
The high-frequency extension becomes slightly more focused and controlled, reducing harshness at high SPL while preserving essential detail and transparency.

The True Meaning of Dual Mode Design
BASELINE and JANUS SLEEVES are not two different sound signatures, but two applications of the same acoustic core under different terminal acoustic conditions.

The subtle differences shown in the frequency response graph are not tuning variations, but the result of changes in acoustic loading caused by ear canal extension length. Adjustments in terminal load, resonance distribution, and high-frequency coupling behavior directly influence projection, imaging stability, and intelligibility in real-world performance environments.

BASELINE preserves the original balanced response and full dynamic headroom, serving as the reference mode for studio monitoring and critical listening.
JANUS SLEEVES, through its extended custom sleeve structure, optimizes the acoustic load for high-SPL stage environments, concentrating vocal presence and key frequency regions for improved clarity and focus.
The purpose of Dual Mode Design is not to create two different sounds, but to ensure that the same acoustic system performs optimally across different professional scenarios.

One acoustic core. Two acoustic applications.
Engineered for performance.

Shipping & Payment

Delivery Options

  • Taipei – Store Pickup
  • Taiwan – Express Home Delivery (No home delivery service in remote areas of Taiwan and outlying islands)
  • [All Products] – SF Express Delivery : Hong Kong
  • [All Products] – SF Express : Macau
  • [All Products] – S.F. Express: China Mainland East, Central, and South China. China's mainland Inner Mongolia, Xinjiang, Qingkang Tibetan areas, please contact us separately.
  • [All Products] – SF Express : Japan
  • [All Products Except for Custom Monitors & Communication Earpieces] – SF Express : South Korea, Singapore, Malaysia
  • [All Products] – SF Express : Vietnam, Thailand

Payment Options

  • Credit Card
  • ATM Virtual Account Code Payment
  • LINE Pay (Taiwan Credit Card Accounts Only)
  • CVS (Print out the bills by CVS and pay in the store)
  • Barcode (Pay at convenience store by barcode)
  • Credit Cards 0% interest, 3 installments
  • Credit Cards 0% interest, 6 installment
  • zingala - BNPL by Chailease， No Credit Card Required – 3 Installments 0 Interests
  • zingala - BNPL by Chailease， No Credit Card Required – 6 Installments 0 Interests
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