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Radio Design Labs RU-MLD4T
1x4 Microphone/Line Distribution Amplifier with Transformer

OUR PART #:  RUMLD4T

Radio Design Labs' RU-MLD4 is a four-channel audio distribution amplifier.
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Our Price: $423.46
List Price: $566.46
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Radio Design Labs RU-MLD4T
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Radio Design Labs' RU-MLD4 is a four-channel audio distribution amplifier. The input and all four outputs may be connected through the front-panel XLR jacks or on the rear panel detachable terminal blocks. The input accepts either a balanced microphone or line level signal. Each of the four outputs provides either a microphone or line level signal. Both the front-panel XLR connectors and the rear-panel terminals are active at all times. The RU-MLD4 may be rack-mounted with the XLR jacks facing forward, or may be reverse-mounted using the RDL RU-FP1 Filler Panel/Reverse Mount Kit.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.

The audio input is equipped with a rear-panel switch to select between MIC and LINE level. Two additional switches allow setting the MIC input for LO or HI gain and for enabling or disabling standard 24 Vdc phantom. The two microphone gain settings allow the connection of a wide variety of dynamic and condenser microphones. Each output is provided with a separate rear-panel switch to set the associated level to either MIC or LINE. Audio outputs are isolated from each other and may be wired balanced or unbalanced. Gain trim is provided on a front-panel control. The knurled adjustment is provided with a screwdriver slot so the gain may be adjusted by hand or by screwdriver. An RDL Dual-led VU meter is provided above the gain trimmer. The meter is calibrated to indicate +4 dBu for outputs set to line level. The rear panel provides a detachable terminal block and a power input jack to connect 24 Vdc power. Each output of the RU-MLD4T is equipped with a studio-quality audio output transformer.

Radio Design Labs RU-MLD4T Features:

  • Distribution Amplifier with Four Outputs
  • Front Panel XLR Input / Output Jacks
  • Detachable Input / Output Terminal Blocks
  • Switch-selectable Mic or Line Input
  • Switch-selectable Mic Gain and Phantom
  • Gain Trim on Input
  • Each Output Switch-selectable Mic or Line
Rack Adapter for (3) RACK-UP Series Modules
Radio Design Labs RU-RA3R Rack Adapter for (3) RACK-UP Series Modules
The RU-RA3R from RDL rack mounts (3) RACK-UP modules in fixed or mobile installations. Metal RACK-UP series products drop into the chassis, slide into position and are secured by tightening two screws provided with the RACK-UP product ...
56.25 75.25 25

In Stock
10.4" Rack Mount for 1 Rack-Up Series Product
Radio Design Labs RU-HRA1 10.4" Rack Mount for 1 Rack-Up Series Product
Radio Design Labs' Ru-HRA1 rack mounts 1 RACK-UP module or mounting frame for AMS accessories.  Fits 10.4" racks.Shipping Weight: 0.34 lbsPackage Dimensions: 2" x 2" x 12.25" (5.08 x 5.08 x 31.12 cm)
29.29 39.17 25

In Stock
24 VDC 500mA Switching Power Supply, North American Model
Radio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply, North American Model
Radio Design Labs' PS-24AS is a 24 VDC/500 mA switching power supply with a North American AC plug. Compatible with various RDL products.Radio Design Labs PS-24AS Specifications: Input: 100 to 240 VAC Output: 24 Vdc, 500 mA (UL, ...
23.40 31.28 25

In Stock
Mounting Bracket for RACK-UP Series
Radio Design Labs RU-BR1 Mounting Bracket for RACK-UP Series
The RU-BR1 mounts an RDL 'RACK-UP' module above or below a horizontal surface.
33.83 39.92 15

Usually ships in 7-14 business days.
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DIN Rail Adapter for Rack-Up
Radio Design Labs DRA-35R DIN Rail Adapter for Rack-Up
The DRA-35R provides DIN rail mounting for any RDL RACK-UP┬« or MAX RACK-UP module, allowing full access to the front and rear panels of the mounted modules. The DRA-35R attaches to a 35 mm DIN Rail. 
17.27 20.38 15

Usually ships in 7-14 business days.
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