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ACS VIORA CORE Reference-Grade — Universal In-Ear Monitors — A Reliable Sonic Reference

ACS VIORA CORE Reference-Grade — Universal In-Ear Monitors — A Reliable Sonic Reference

VIORA CORE is a reference-grade in-ear monitor for listening, transcription, arrangement, and pre-production.
Rather than enhancing sound, it provides a stable, repeatable sonic baseline for reliable musical decisions.
It‘s natural, balanced tuning supports long working sessions without fatigue.

TAIWAN ONLY – Free Shipping OVER NT$500 on order

NT$25,930
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Description
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Description
A Reliable Sonic Reference for Everyday Music Work
VIORA CORE is designed as a reference point for listening, transcription, arrangement, and pre-production.
Rather than enhancing or flattering the sound, its purpose is to provide a stable, repeatable, and trustworthy sonic baseline, allowing musical decisions to be made with confidence.

For musicians and creators developing their monitoring skills, or professionals who require a reliable in-ear reference for long working sessions, VIORA CORE serves as a solid entry into professional monitoring.

Natural, Balanced Tuning — Free from Sonic Colouration
VIORA CORE follows a natural, balanced, and non-coloured monitoring philosophy.
Low frequencies are not exaggerated, vocals are not sweetened, and details are not artificially enhanced.

This approach ensures the earphones do not influence your judgement, helping you build consistent listening habits and maintain predictable results across different playback systems.

LiveSound — A Core Acoustic Element of VIORA
At the heart of VIORA CORE lies the ACS LiveSound acoustic structure, an integral part of its overall design.

LiveSound is not intended for stage interaction in this configuration. Instead, it is engineered to control air pressure within the ear canal, effectively reducing TVIG (Trapped Volume Insertion Gain) and minimising unnecessary stress on the eardrum during extended listening sessions.

By relieving internal pressure, LiveSound contributes to a more open, spacious soundstage without sacrificing clarity, helping reduce listening fatigue and supporting sustained, focused work.

Designed for Long Sessions
Both the sound tuning and physical design of VIORA CORE are optimised for extended use.

The presentation remains clear and relaxed over time, while the universal shell design—derived from over 20 years of ACS custom-fit experience—offers a stable fit across a wide range of ear shapes, maintaining consistent sound delivery throughout long sessions.

The Starting Point of a Professional Monitoring System
VIORA CORE forms the foundation of the VIORA PRO-MUSIC system.

It establishes a reliable baseline for monitoring, allowing users to transition to higher-dynamic, system-level, or stage-oriented solutions, such as the PRO-MUSIC Monitor Set or Stage configuration, as needed.

Who Is It For?
Music students and emerging creators
Musicians building critical listening skills
Arrangers and producers working in pre-production
Anyone seeking a non-fatiguing, judgement-neutral in-ear monitor for long working hours

VIORA CORE in One Line
Not designed to make music sound better — but to make decisions more reliable.

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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