{{ 'fb_in_app_browser_popup.desc' | translate }} {{ 'fb_in_app_browser_popup.copy_link' | translate }}

{{ 'in_app_browser_popup.desc' | translate }}

ACS Select ATOM 4 Digital Analog Converters (DAC)

ACS Select ATOM 4 Digital Analog Converters (DAC)

Experience home-stereo quality on the go. ATOM 4 features dual OP Amps with 4.4mm and 3.5mm outputs. Pair it with ACS JANUS via 4.4mm cable, and you’ll never go back—your true wireless earphones will be just for calls.

TAIWAN ONLY – Free Shipping OVER NT$500 on order

NT$2,380
{{shoplineProductReview.avg_score}} {{'product.product_review.stars' | translate}} | {{shoplineProductReview.total}} {{'product.product_review.reviews' | translate}}
{{amazonProductReview.avg_rating}} {{'product.product_review.stars' | translate}} | {{amazonProductReview.total_comment_count}} {{'product.product_review.reviews' | translate}}
{{ title.name_translations | translateModel }} : {{variationName[$index] | translateModel}}
Quantity
Sign in/up now
Add to Wishlist
Sign in/up now
The maximum quantity per submit is 99999
This quantity is invalid, please enter a valid quantity.
Sold Out

Not enough stock.
Your item was not added to your cart.

Not enough stock.
Please adjust your quantity.

{{'products.quick_cart.out_of_number_hint'| translate}}

{{'product.preorder_limit.hint'| translate}}

Limit {{ product.max_order_quantity }} per order.

Only {{ quantityOfStock }} item(s) left.

Please message the shop owner for order details.
Sign in/up now
Add to Wishlist
Sign in/up now
Description
Shipping & Payment
Customer Reviews
Description

The ATOM 4 DAC (Digital-to-Analog Converter) redefines what mobile music can sound like.

Equipped with dual independent operational amplifiers and offering both 4.4 mm balanced and 3.5 mm unbalanced outputs, it delivers a significant boost in clarity, dynamics, and resolution across your entire music library.

Connect your ACS JANUS earphones with the 4.4 mm cable, plug the ATOM 4 into your phone, and you’ll be amazed by the home-audio-grade listening experience. 

The sound is powerful and detailed, with a wide, natural soundstage — it feels as if the singer is performing right in front of you.


ATOM 4 supports a wide range of sample rates and features an automatic indicator light that displays the current signal level.

Once you’ve heard it, there’s no going back！
Your true-wireless earphones?
From now on, they’re just for phone calls！

If you value ultimate sound quality, the combination of the ACS-selected ATOM 4 DAC with any ACS custom or universal in-ear monitor, paired through a 4.4 mm balanced cable, is the perfect setup to experience your music at its full potential.


Wired vs. Wireless — A Clear Difference
In short, if you don’t mind trading sound quality for convenience, wireless earphones are fine.
However, if you want to experience the authentic professional-grade sound that ACS earphones are designed to deliver, the ATOM 4 with a 4.4 mm balanced connection is the only choice.





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)
Customer Reviews
{{'product.product_review.no_review' | translate}}

Related Products