Product Description
RDL STA-2A Dual High Gain Line Amplifiers
Overview
The STA-2A Dual High-Gain Line Amplifier from RDL is a dual-channel, line-level audio preamplifier with up to 24 dB gain. The gain is adjustable from unity to +24 dB using a 25-turn precision audio taper trimming potentiometer.
Each channel is identical and audio inputs are bridged at 20 kOhms to accept either balanced or unbalanced audio signals. The STA-2A's output and line-driver circuits are designed to drive long balanced audio lines into 600-Ohm loads. This unit features wideband circuitry for excellent phase response and improved clarity.
It offers RDL's SupplyFlex power input configuration that can be fed from a ground-referenced 24 VDC power supply, a floating (non-ground-referenced) 24 VDC power source, or a bipolar power supply.
Dual High-Gain Line Amplifier
This dual-channel line-level audio preamplifier offers up to 24 dB gain in audio lines.
Conversions
It can make conversion between balanced/unbalanced audio and high-/low-impedance signals.
Line-Driver Circuits
The amplifier's line-driver circuits are designed to drive long balanced audio lines into 600-Ohm loads.
SupplyFlex Configuration
It features RDL's SupplyFlex power input configuration.
Features
- Up to 24 dB Gain in Audio Lines
- Conversion for Unbalanced and Balanced
- Conversion for High and Low Impedance
- Low-Impedance, High-Current Line Drivers
- Dual-Channel Line-Level Preamplifier
- SupplyFlex Power Input Configuration
Specifications
Amps | 2 x Identical Circuits (Stereo or Dual Mono Operation) |
Inputs | 2 x 20 kOhms Balanced or Unbalanced |
Input Signal | For +4 dBu Out: -20 dBu (-18 dBV) to +18 dBu |
Maximum Input Level | +24 dBu |
Outputs | 2 x 150 Ohms Balanced or 75 Ohms Unbalanced |
Output Signal
Balanced Audio | +4 dBu Nominal |
Unbalanced Audio | 6 dB below Balanced Line Level |
Maximum Output Level | +25 dBu |
Frequency Response | 10 Hz to 100 kHz (±0.05 dB) |
THD & Noise | < 0.004% (Unity Gain) |
IMD | < 0.005% (Unity Gain) |
Crosstalk | < -90 dB (Unity Gain) |
Headroom | < -80 dB (Unity Gain) |
Gain | Unity +24 / -14 dB (Adjustable) |
CMRR | > 60 dB (50 Hz to 120 Hz) |
Ambient Operating Environment | 32 to 131°F / 0 to 55°C |
Power | Ground-Referenced or Floating, 24 to VDC @ 50 mA |
Dimensions | 3.0 x 1.5 x 0.6" / 7.6 x 3.9 x 1.7 cm |
Weight | Not Specified by Manufacturer |