RDL STA-1 Dual Balanced/Unbalanced Line Amplifier -12 to 20 dB GainThe 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