Overview
The STA-1 is a dual-channel line-level preamplifier with bridging inputs, adjustable gain or loss, and low-impedance outputs. Each of the two identical circuits is both an electronic line transformer and a line amplifier. Hook up the STA-1 just like a pair of audio transformers with gain. True dc amplifiers produce unsurpassed audio clarity, high common-mode rejection, ultra-low distortion and low noise. The STA-1 is perfect for most line amplification, impedance or balanced/unbalanced conversion.
The STA-1 operates from floating or bipolar dc power. For installations where ground-referenced power is preferred, use the STA-2A Dual High Gain Line Amplifiers.
Features
- Up to 20 dB Gain in an Audio Line
- Conversion from Balanced to Unbalanced
- Conversion from Unbalanced to Balanced
- Conversion from High to Low Impedance
- Conversion from Low to High Impedance
- Bridge an Audio Line Feed
- Precisely Match Audio Levels
Specifications
| Amps per STA-1 | 2 identical circuits (stereo or dual mono operation) |
| Gain | 20 dB (adjustable, separate controls for each channel) |
| Input Impedance | 10 k? bridging |
| Input Configuration | Balanced or unbalanced |
| Output Impedance | 200 ? balanced (drives 600 ? or 10 k? lines) |
| Output Configuration | Balanced or unbalanced |
| Frequency Response | dc to 25 kHz (± 0.25 dB) |
| THD+N | <0.03% |
| Output Level | +4 dBu |
| Headroom | 18 dB (at rated output of +4 dBu) |
| Noise | <-75 dB (referred to +4 dBu) |
| CMRR | -50 dB to (50 to 120 Hz) |
| Crosstalk | Better than 75 dB |
| Ambient Operating Environment | 0° C to 55° C |
| Power Requirement | FLOATING, 24 Vdc @ 50 mA |
| Package Type | Cardboard Box |
| Package Dimensions | 2 x 2 x 4 in. |
| Shipping Weight | 0.19 lbs. |
| WEEE weight | 0.14 lbs. |
| Tariff code | 8518.40.2000 |