
Radio Design Labs RU-MX4L Professional 4 Channel Line Level Mixer - Microphone and line Output
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- Sourced through UK distribution
- UK manufacturer warranty
- UK-based engineers
- No import duty or customs charges
- GBP pricing, UK VAT invoices
Description
The RU-MX4L is the ideal choice in many applications where a combination of balanced and/or unbalanced line-level signals needs to be mixed. Balanced connections use XLR connectors. Unbalanced signals are coupled through phono jacks. Each of the four RU-MX4L inputs can accept either a balanced XLR line-level input or an unbalanced line-level phono jack input. The unbalanced phono jack LINE OUTPUT from one RU-MX4L may connect to the unbalanced input of other equipment, or may be connected to the DIRECT input of another RU-MX4L or an RU-MX4 to expand mixing capabilities. The RU-MX4L provides one balanced output, switchable for mic or line level. Audio levels are adjustable on the front panel. Each input channel is equipped with a front-panel dual-LED VU meter that follows standard VU ballistics. The final mix is displayed on an LED string VU meter featuring a visually comfortable arc motion. A factory installed output isolation transformer is available by ordering the RU-MX4LT.
Key features:
• Four Channel Line-Level Audio Mixer
• XLR Balanced, Phono Jack Unbalanced Inputs
• Mic or Line XLR Output, Switchable
• Unbalanced Line Output and Direct Input
• Studio Quality, Low-Noise Performance
• Expansion Bussing Capability
• Additional Line Inputs Bussed to an RU-MX4
• Output Isolation Transformer (RU-MX4LT)
Manufacturer part number RU-MX4L.
Key features
20 kΩ balanced bridging
-13 to +22 dBu for +4 dBu output
2 kΩ unbalanced
-25 dBV to +20 dBV for +4 dBu output; -10 dBV nominal
Balanced Line: Off to 17 dB gain Unbalanced Line: Off to 27 dB gain
0 dB to infinity
20 Hz to 30 kHz (± 0.25 dB)
< 0.01%
Technical specifications
Documents
Delivery & returns
Estimated delivery 9 Sept - 13 Sept. UK mainland delivery only. Some large or made-to-order items carry longer lead times, shown on the product page.
Unused items in original packaging can be returned within 14 days of delivery — see the returns policy for how business and consumer returns differ. Faulty items are covered under manufacturer warranty and by your statutory rights.
Bought in the UK, backed in the UK
This item is sourced through UK distribution and ships to you from within the UK, so the order never crosses a customs border.
The manufacturer warranty is honoured here in the UK. If something fails, you deal with us, not with an overseas seller in another time zone.
Our own UK-based engineers install, commission and support what we sell, and can attend site when a system needs hands on it.
Delivered within the UK mainland, so there is no import duty, customs charge or courier handling fee waiting for you on delivery.
Prices are in pounds sterling with proper UK VAT invoices, and purchase orders are accepted from approved education accounts: no currency conversion and no surprises at the door.
Payment & security
Pay securely by card. Education customers can apply for a 30-day purchase order account.
Schools, colleges, sixth forms, universities and multi-academy trusts can order on invoice, with no card payment required. Purchase orders and credit terms are for education customers only.
All transactions are processed over an encrypted, secure checkout.
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