Addicted To Audio - Home Audio Electronics & Accessories

Bellos Audio X4 Custom In-Ear Monitors

Bellos Audio X4 Custom In-Ear Monitors - Main image
$1241.79 $1749 In stock

We are thrilled to unveil the X4, our flagship product from the X-Series line of Custom In-Ear Monitors. The X4 is the culmination of our dedication to delivering an exceptional audio experience to musicians and audiophiles alike. Featuring an added ultra-high driver and our proprietary In-Air Canal technology, the X4 delivers an unprecedented level of clarity, detail, and realism.

The X4’s tuning is finely crafted to deliver a reference warm sound signature that reveals every subtle detail of your music. The ultra-high driver provides an extended frequency response, delivering a very smooth and natural sound. The In-Air Canal technology enables the most comfortable CIEM listening experience. So comfortable it’s like having nothing in your ears! The X4’s are the best in class in ear monitors and are the perfect choice for anyone who demands the highest level of audio quality.

Like all X-Series, it comes with a host of additional proprietary technologies such as ATOM Venting which greatly expands the soundstage, beautiful 3D Printed Matte Shells, the ultra-durable RCX Cable Connector, Modular Drivers & Removable Faceplates for fast and easy service and repairs.

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.8 / 5 · 5 reviews)

Isabella J. ★★★★★

I’ve been using these for about two weeks now and the clarity when I play live is seriously impressive—I can actually hear the subtleties in my instrument that I used to miss. The custom fit took a bit to get used to, but now they feel secure and comfortable even during long sets.

Henry U. ★★★★★

The X-Series design philosophy really shows in the X4—the way they mold perfectly to my ear canal makes long listening sessions effortless. Crisp highs and a surprising amount of bass detail for a custom monitor.

Owen ★★★★★

The fit is absolutely perfect straight out of the box, and the isolation makes me forget I'm wearing them on stage. I've heard details in my own mixes I never caught before with these X4s.