RDL STA-2A High Output Dual Channel High Output Mountable Line Amplifier with Gain Trim


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Dale #:RDL-STA2A

Please Note: requires PS-24AS Power Supply (sold separately)

Availability: Usually ships in 5 - 10 Days

This item usually ships within 5-10 days after your order is placed. Your payment will be charged after completing checkout.
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  • The STA-2A is a dual-channel, line-level audio preamplifier. Each channel is identical. The audio inputs are bridged at 20 k ohm and accept either an unbalanced or a balanced audio signal. Gain is adjustable from unity to +24 dB using a 25-turn precision audio taper trimming potentiometer. The output line driver circuits are designed to drive long balanced audio lines into 600 ohm loads.

    The STA-2A features wideband circuitry for excellent phase response, low noise, low distortion and exceptional audio clarity. RDL™s SupplyFlex power input configuration is included in the STA-2A. The power supply input may be fed from a floating (not ground-referenced) 24 Vdc power source, from a bipolar power supply (+/- 12 Vdc or +/-15 Vdc) or from a ground-referenced 24 Vdc power supply.Many audio products provide optimum performance when feeding into a bridging input, but may not provide the output needed to directly drive low-impedance lines terminated with 600 transformers. The STA-2A is specifically designed for such installations, and is also ideal in installations requiring high gain in line-level audio transmission.
    • Up to 24 dB Gain in Audio Lines
    • Conversion between Unbalanced and Balanced
    • Conversion between High and Low Impedance
    • Low-Impedance, High-Current Line Drivers
    • Dual-Channel Line-Level Preamplifiers
    • High Gain, High Output, High Performance
    • RDL SupplyFlex Power Input Configuration
  • Amps per STA-2A: 2 identical circuits (stereo or dual mono operation)
    Inputs (2): 20 k balanced or unbalanced
    Input Signal (for +4 dBu out): -20 dBu (-18 dBV) to +18 dBu
    Maximum Input Level: +24 dBu
    Outputs (2): 150 balanced or 75 unbalanced
    Output Signal:
    Balanced: +4 dBu nominal
    Unbalanced: 6 dB below balanced line level
    Maximum Output Level: +25 dBu
    Frequency Response: 10 Hz to 100 kHz (+/- 0.05 dB)
    THD+N: < 0.004% (unity gain)
    IMD: < 0.005% (unity gain)
    Noise below +4 dBu: < -90 dB (unity gain)
    Crosstalk: < -80 dB (unity gain)
    Headroom: > 20 dB (above +4 dBu)
    Gain: Unity +24 / -14 dB (adjustable)
    CMRR: > 60 dB (50 Hz to 120 Hz)
    Power Requirement: GROUND-REFERENCED or FLOATING, 24 to 33 Vdc @ 50 mA
    Ambient Operating Environment:0 degrees C to 55 degrees C
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