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Professional Audio Shop Established Since 1996
The system is comprised of a transmitter unit, which connects to your audio source (typically a mixer or sound interface); and a belt-pack receiver, to which you connect your earphones or headphones.
The U4 system features high-resolution, 24-bit / 48 kHz audio, with a very wide and smooth frequency response between 20 Hz and 20 kHz, a signal-to-noise ratio of 107 decibels, and more volume than you’ll ever need. The sound is better than CD quality, and much, much better than MP3 quality!
The internal battery in both the transmitter and the receiver lasts for 5 hours. The battery is easily charged using the included USB cable and any standard 5V USB charger, and charging takes between 1.5 and 2.5 hours depending on the current of the charger being used.
The basic application is to run a monitor mix from a soundboard, wirelessly, to one set of headphones or in-ear monitors—live, at home or in the studio. But there’s a lot more you can do with the U4 System!
If you have more than one U4 receiver, you can broadcast a signal to a whole group of people. This can be useful in situations where one person needs to communicate clearly and directly to a group—either in noisy environments or in situations where you don’t want to disturb others. This makes it an excellent option for things like group demos, presentations or tours.
For recording musicians, whether in a home or professional studio, going wireless makes the whole process so much freer and easier—especially if you’re playing or singing AND engineering at the same time!
If you want to practice guitar or bass privately—for example late at night—you can run your signal through a multi-effect unit or modeling amp, send either the ¼” or XLR output to your headphones or earphones, and move freely around your home!
Your whole band—up to six musicians—can use the system together! There can be one monitor mix per transmitter, so if you have multiple U4 sets, you can customize monitor mixes for each band member. This is an easy, great-sounding and cost-effective monitoring solution for studio recording, rehearsals or live gigs. In rehearsal, this also means that there’s no need for PA speakers—so a band can practice in an apartment, or late at night.
WIRELESS TYPE |
2.4 GHz ISM worldwide open band |
BIT DEPTH/SAMPLE RATE |
24-bit / 48 kHz |
SWITCHABLE CHANNELS |
6 |
SIMULTANEOUS CHANNELS |
6 |
FREQUENCY RESPONSE |
20 Hz – 20 kHz (-3dB) |
DYNAMIC RANGE |
107 dB (-3 dB) |
SIGNAL-TO-NOISE RATIO |
107 dB |
STEREO/MONO |
Mono |
TOTAL HARMONIC DISTORTION |
0.2% |
LATENCY |
5 ms |
OPERATING RANGE |
27.5 m / 90 ft (line-of-sight) |
TRANSMITTER | |
---|---|
INCLUDED |
U4T |
CONNECTOR |
XLR or mono unbalanced 1/4” TS with supplied adapter |
DIMENSIONS |
100 x 30 x 28 mm / 3.8" x 1.2" x 1.1" |
WEIGHT |
90 g / 3.17 oz |
RECEIVER | |
---|---|
INCLUDED |
U4R |
HEADPHONE OUTPUT |
3.5 mm / 1/8" |
DIMENSIONS |
60 x 47 x 41 mm / 2.36" x 1.85" x 1.61" |
WEIGHT |
118 g / 4.16 oz |
BATTERY | |
---|---|
TYPE |
Rechargeable Lithium-ion (internal) |
BATTERY LIFE |
5 hours |
CHARGING TIME |
2.5 hrs (full charge) |
CHARGING VOLTAGE |
5V (USB) |
USABLE WHILE CHARGING |
Yes |
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with all accessories and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at boutique@seconcept.com. If your return is accepted, we’ll send you a return shipping label (at your expenses) as well as instructions on how and where to send your package back. Items sent back to us without first requesting a return will not be accepted and not refunded.
You can always contact us for any questions prior to purchase by email at: boutique@seconcept.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
All Returns must contain all associated packaging and materials (ie accessories, manuals, wires, etc). Merchandise that is not returned in brand-new condition, including damages, abuse, marks, showing wear, or with missing packaging or accessories, will be subject to additional charges. Shipping and Handling charges (delivery and return) are non-refundable, including any shipping fees not directly incurred that are part of a free shipping promotion. Any items packaged with software, including but not limited to, DJ Controllers, Audio Interfaces, etc., must be returned with the original software disc including serial number and proof of deactivation.
We cannot accept returns on liquidation, special orders, liquid, needles, parts, used, sales, open box item or gift cards.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.
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The system is comprised of a transmitter unit, which connects to your audio source (typically a mixer or sound interface); and a belt-pack receiver, to which you connect your earphones or headphones.
The U4 system features high-resolution, 24-bit / 48 kHz audio, with a very wide and smooth frequency response between 20 Hz and 20 kHz, a signal-to-noise ratio of 107 decibels, and more volume than you’ll ever need. The sound is better than CD quality, and much, much better than MP3 quality!
The internal battery in both the transmitter and the receiver lasts for 5 hours. The battery is easily charged using the included USB cable and any standard 5V USB charger, and charging takes between 1.5 and 2.5 hours depending on the current of the charger being used.
The basic application is to run a monitor mix from a soundboard, wirelessly, to one set of headphones or in-ear monitors—live, at home or in the studio. But there’s a lot more you can do with the U4 System!
If you have more than one U4 receiver, you can broadcast a signal to a whole group of people. This can be useful in situations where one person needs to communicate clearly and directly to a group—either in noisy environments or in situations where you don’t want to disturb others. This makes it an excellent option for things like group demos, presentations or tours.
For recording musicians, whether in a home or professional studio, going wireless makes the whole process so much freer and easier—especially if you’re playing or singing AND engineering at the same time!
If you want to practice guitar or bass privately—for example late at night—you can run your signal through a multi-effect unit or modeling amp, send either the ¼” or XLR output to your headphones or earphones, and move freely around your home!
Your whole band—up to six musicians—can use the system together! There can be one monitor mix per transmitter, so if you have multiple U4 sets, you can customize monitor mixes for each band member. This is an easy, great-sounding and cost-effective monitoring solution for studio recording, rehearsals or live gigs. In rehearsal, this also means that there’s no need for PA speakers—so a band can practice in an apartment, or late at night.
WIRELESS TYPE |
2.4 GHz ISM worldwide open band |
BIT DEPTH/SAMPLE RATE |
24-bit / 48 kHz |
SWITCHABLE CHANNELS |
6 |
SIMULTANEOUS CHANNELS |
6 |
FREQUENCY RESPONSE |
20 Hz – 20 kHz (-3dB) |
DYNAMIC RANGE |
107 dB (-3 dB) |
SIGNAL-TO-NOISE RATIO |
107 dB |
STEREO/MONO |
Mono |
TOTAL HARMONIC DISTORTION |
0.2% |
LATENCY |
5 ms |
OPERATING RANGE |
27.5 m / 90 ft (line-of-sight) |
TRANSMITTER | |
---|---|
INCLUDED |
U4T |
CONNECTOR |
XLR or mono unbalanced 1/4” TS with supplied adapter |
DIMENSIONS |
100 x 30 x 28 mm / 3.8" x 1.2" x 1.1" |
WEIGHT |
90 g / 3.17 oz |
RECEIVER | |
---|---|
INCLUDED |
U4R |
HEADPHONE OUTPUT |
3.5 mm / 1/8" |
DIMENSIONS |
60 x 47 x 41 mm / 2.36" x 1.85" x 1.61" |
WEIGHT |
118 g / 4.16 oz |
BATTERY | |
---|---|
TYPE |
Rechargeable Lithium-ion (internal) |
BATTERY LIFE |
5 hours |
CHARGING TIME |
2.5 hrs (full charge) |
CHARGING VOLTAGE |
5V (USB) |
USABLE WHILE CHARGING |
Yes |
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