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Radio Design Labs RU-MLA2T
Dual Mic/Line Preamplifier with Transformer

OUR PART #:  RUMLA2T

Radio Design Labs' RU-MLA2T is a dual channel audio preamplifier.
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Our Price: $422.62
List Price: $565.34
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Radio Design Labs RU-MLA2T
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Radio Design Labs' RU-MLA2T is a dual channel audio preamplifier. The inputs and outputs may be connected through the front panel XLR jacks or on the rear panel detachable terminal blocks. Each input accepts either a balanced microphone or line level signal. Each output provides either a microphone or line level signal. Both the front panel XLR connectors and the rear panel terminals are active at all times. It 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.

Each audio input is equipped with a rear panel switch to select between MIC and LINE level. Two additional switches on each input 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 may be wired balanced or unbalanced. Crosstalk between channels is below the noise floor, allowing the RU-MLA2T to be operated as a stereo preamplifier or as two separate mono preamplifiers.

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.

Gain trim for each channel is provided on a front panel control. The knurled adjustment includes a slot so the gain may be adjusted by hand or by screwdriver. An RDL dual LED VU meter is provided above each channel gain trimmer. The meters are 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. The RU-MLA2T audio outputs are active balanced. Each output of the RU-MLA2T is equipped with a studio-quality audio output transformer.

Features:

  • Two-channel Audio Preamplifier
  • Front Panel XLR Input / Output Jacks
  • Detachable Input / Output Terminal Blocks
  • Switch-selectable Mic or Line Inputs
  • Switch-selectable Mic Gain and Phantom
  • Gain Trim on Each Input
  • Each Output Switch-selectable Mic or Line

Specifications:

  • Inputs (2): XLR(front); detachable term block(rear)
  • Input level (for +4 dBu output): Switch-selectable (rear panel) MIC/LINE
    - Mic: -48 dBu to -3 dBu (LO GAIN); -65 dBu to -20 dBu (HI GAIN)
    - Line: -15 dBu to +28 dBu
  • Input Impedance:
    - Mic: 2 kOhm balanced, switchable 24 V phantom (IEC 1938: 1996-12)
    - Line: > 10 kOhm balanced; may be connected unbalanced
  • Outputs (2): XLR(front); detachable term block(rear)
  • Output level: Switch-selectable (rear panel) MIC/LINE
  • Output Impedance: 150 O balanced
  • Channels: 2 (A and B; stereo or dual mono)
  • Gain Trim (2): Front panel adjustable; one per channel
    Mic: Off to 52 dB gain (LO GAIN); Off to 69 dB gain (HI GAIN)
    Line: Off to 20 dB gain
  • Frequency Response:
    - Mic: 80 Hz to 50 kHz (+/- 0.75 dB); < 10 dB @ 20 Hz (integral high-pass filter)
    - Line: 15 Hz to 50 kHz (+/- 0.1 dB)
  • THD+N: < 0.1% (Mic); < 0.005% (Line)
  • CMRR: > 60 dB (Mic); > 50 dB (Line)
  • Residual Noise (below +4 dBu LINE output or -45 dBu MIC output):
    - Mic: -79 dB (50 dB Gain); -70 dB (Mic 60 dB Gain)
    - Line: -85 dB
  • Crosstalk: Below noise floor (A to B; B to A)
  • Headroom: > 20 dB (above +4 dBu LINE output)
  • Power Requirement: GROUND-REFERENCED, 24 to 33 Vdc @ 80 mA
  • Ambient Operating Environment: 0° C to 55° C
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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 ...
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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, ...
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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.
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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. 
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Usually ships in 7-14 business days.
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