Description
The RU-MLB4 is a 4×4 bi-directional Dante audio network interface that converts mic or line sources to network channels and converts Dante streams to balanced line outputs. It is designed for commercial and industrial AV installations where reliable networked audio distribution is required. The compact all-metal enclosure supports rack, surface, or shelf mounting for flexible deployment.
The unit accepts four mic or line inputs that are switch-selectable per channel and provides automatic microphone gain selection of 60 dB for dynamic mics and 40 dB for condenser mics. Each mic input provides P48 phantom power when set to the mic position. Four Dante receive channels are converted to four balanced +4 dBu outputs with more than 18 dB headroom for professional line-level equipment.
Audio conversion uses high-resolution 24-bit A/D and D/A converters and supports 44.1 kHz and 48 kHz sample rates, with 48 kHz default. Nominal network level is -18 dBFS = +4 dBu and THD+N is specified below 0.1% on inputs and below 0.05% on outputs. Crosstalk and noise floor specifications ensure separation and clarity across the audio band for demanding installations.
Connectivity is provided via an RJ45 Ethernet port supporting Dante over 100 Mbps, balanced detachable terminal blocks for mic/line inputs and outputs, and separate unbalanced line input terminals for -10 dBV sources. Front-panel variable-intensity LEDs indicate input and received network signal presence, and network sync/link LEDs report network status. Power is supplied by an external 24 Vdc source or, on the RU-MLB4P variant, by PoE Class 0 per IEEE 802.3af.
The RU-MLB4 is suited to conference rooms, houses of worship, broadcast racks, and distributed audio systems where compact networked converters simplify wiring and channel distribution. Installers can mix line-level equipment and microphones on the same device while sending and receiving Dante channels to remote processors, mixers, or recording systems. Its automatic mic gain eliminates on-site gain trims when changing microphone types.
Installation is straightforward with rear-panel MIC/LINE selectors, detachable terminal blocks for clean wiring, and standard rack or surface mounting options. The durable all-metal chassis is built for continuous duty in commercial environments and engineered in the USA for long-term reliability. LEDs and simple selectors speed commissioning and troubleshooting on site.
Free Ground Shipping
We offer free ground shipping on every purchase of $300 and more for US and US territory. Please choose "Free Ground Shipping (UPS/USPS)" option at checkout.
UPS Ground
UPS provides up-to-date tracking information. Ground service takes anywhere from 2-7 working days for delivery depending on destinations. UPS Ground does not deliver on Saturdays, Sundays or Holidays.
USPS Priority Mail/USPS Express Mail
For all shipments shipped via USPS, we offer 'DELIVERY CONFIRMATION' number with each package. Difference between tracking number provided by UPS vs USPS Delivery Confirmation number is: Delivery Confirmation status is updated when the delivery has been made or when the package has made it through major USPS stations.
Air Shipment
Air shipments, Overnight, 2nd day and 3 day select methods offer guaranteed delivery time for your shipment. If you are in hurry or in need for the items on schedule, select one of these methods. Up-to-date tracking information is provided with each Air Shipment. AVProSupply has the right to choose between Air shipments to meet or reduce delivery time. For guaranteed delivery of multiple items with expedited shipping, please contact our customer service representative for personalized assistance to get your items delivered to you when you need them.
International Customers
We offer shipping via USPS/UPS for our international customers. You can find different shipping options during checkout.
Most items ordered from AVProSupply will be shipped out from our California Warehouse. Will-Calls are only allowed with Appointment Only - Please call Customer Service to set one up between the hours of 9am to 6pm PST.
We Offer A 30-Day Money Back Guarantee:
Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.
Refunds:
Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.
Exchanges:
If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.
No Returns/Exchanges on the following:
- TVs and monitors 20" and larger
- Special Order merchandise
- Any item indicated on the website as non-returnable
For more information see our official Return Policy
