We offer free shipping in Canada on most items when an order totals $99 or more before tax. Some exceptions apply; click here for our full shipping policy.
Estimated free shipping transit time
- Greater Toronto Area: 1-2 business days
- Rest of Ontario: 2-3 business days
- Quebec: 2-3 business days
- Maritimes, Manitoba: 3-4 business days
- Alberta & Saskatchewan: 4-5 business days
- British Columbia: 5-6 business days
- Territories: 6-10 business days
Express options available at checkout. Orders dispatch next business day.
Select in-store pickup at checkout and collect your order from our store in Toronto.
Find our entrance on Bay Street, near Charles Street West. We also have a pickup area in the Manulife Centre parking garage. Click here for directions. Before coming to the store, please wait for a confirmation email indicating your order is ready for pickup.
Buy with confidence, backed by Price Protection: if our advertised price goes down within 30 days of your purchase, contact us and we'll refund the difference.
For hygienic reasons, there are no returns on headphones and earphones once opened.
All in-stock headphones are available for personal demonstration in-store. We encourage you to try before buying to ensure satisfactory sound, fit, and functionality.
Click here for our full return policy.
If an item is defective upon receipt, please notify us within 30 days of purchase so we can arrange an exchange. For issues following 30 days, we will work with you and the manufacturer within the scope of each brand’s warranty and service policies.
Description
U4s
Four Driver Universal In-Ear Monitor
Made in the USA
U4s is a quad driver hybrid UIEM designed to bring a wider audience closer to their music, featuring ground-breaking patented technologies originally developed for our flagship products.
Its ergonomic anodized aluminum shell houses a single dynamic driver, two balanced-armature drivers, and one patented tia driver; all weaved together with our patented Tia, LID, and Apex technology. The four-way crossover is elevated with the use of our proprietary electronic low-pass filter; reducing low- frequency distortion. The assortment of included apex modules and ear tips are an invitation to further shape the sound based on preference and source material while the ultra-low impedance premium silver-plated copper cable ensures unimpeded signal transmission.
Its Slate Blue shell colour was influenced by some of the world’s most beautiful blue-dial timepieces while the unique faceplate pattern is inspired by Muonionalusta meteorite fragments. Both the faceplate and shell’s illuminant properties give it a unique tone in varying lighting conditions.
The dissemination of tia technology within our universal IEM range brings the classic 64 Audio sound signature to a new price point. U4s sounds light on its feet while effortlessly delivering physically engaging sub-bass without bleeding into the mid-bass. Balanced mid frequencies and a pleasant high-mid band respond well to a wide array of music and recording styles at every volume level; present but not fatiguing. The tia high-driver’s open airy quality couples with the extended sound-stage provided by apex for a lifelike sonic experience.
SOUND
TECHNOLOGY
- The m20 module (-20dB noise isolation) greatly increases sub-bass response while keeping the mid-bass clean. Works great for overly bright mixes, as it tilts the response towards the low end. While this module shrinks the sound-stage width, it works great for synth heavy or modern pop music that doesn’t contain much acoustic spatial information. The m20 module also unlocks some of the missing sub information in older rock recordings.
- The m15 module (-15dB noise isolation) is fitted to U4s by default, allowing you to hear the clarity of your music along with some of your surroundings.
- The mX module (-10dB noise isolation) delivers the widest imaging with a reduction in noise isolation. Sub-bass response is greatly diminished, giving you the ability to attenuate to your preferences based on music type and mix. It is ideally used for recordings that do not capture much sub-bass content while containing a lot of spatial information. Because of the reduction in sub-bass response it creates a slight tilt in perception towards high frequencies.
CABLE
- .78mm Pins
- 0.23 Ohms Total Impedance
- 7 x 7 x 4 Multi-Twist
- Silver Plated OCC Copper Wire
- 26 Awg
IN THE BOX
- U4s Universal In-Ear Monitors
- 64 Audio Premium Leather Case
- TrueFidelity Eartips (S,M,L)
- Silicone Eartips (S,M,L)
- SpinFit Eartips (S,M,L)
- 48" Black Premium Cable
- m20 apex Modules
- m15 apex Modules
- mX apex Modules
- Round Sticker
SPECIFICATIONS
Specs
Dimensions
About 64 Audio
Warranty
64 Audio offers a two-year limited warranty on all current Custom IEM models. 64 Audio warrants all Custom IEM models to be free from defects in materials and workmanship in either the external shell or internal components for a period of two years from the date of fulfillment. 64 Audio will replace or repair custom models within warranty (subject to approval).
64 Audio offers a 90-day limited warranty on all accessories and warrants products to be free from defects in materials and workmanship for a period of 90 days from the date of delivery and will replace any accessories within warranty.
64 Audio offers a 90-day limited warranty on all Professional Cables, Premium Cables, and IEM Microphone Cables, to be free from defects in materials and workmanship for a period of 90-days from the date of delivery. 64 Audio will replace or repair all cables within warranty.
Warranty does not cover the following:
Physical or hardware damage caused by accident, abuse, misuse, water, ear wax, excessive volume, shock, negligence, misuse of ear gel, acts of God, misapplication or cosmetic normal wear and tear.
Damage caused by improperly or incorrectly performed maintenance or service by an unauthorized third-party or person. Unauthorized third party service and/or repair attempts may result in replacement at the cost of the customer.
Damage caused by modifications or alterations without the written permission of the company.
Any defect that is attributable to any failure or damage, which is beyond the reasonable control of the company.
In the case of a broken shell, we offer a remolding service which has a base price plus additional costs for customizations, replacement drivers, and shipping.
Cables are guaranteed not to be dead on arrival and have a 90-days limited warranty from the original shipping date.
Personal Attention, Expert Advice
We’re here to answer your questions and help you make the right choice.
Service Department
Our advisers and technicians are standing by to assist after your purchase.
