RDl STA-2A Dual High Gain Line AmplifiersThe STA 2A is a dual channel, line level audio preamplifier. Each channel is identical. The audio inputs are bridged at 20 k 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 loads. The STA 2A features wideband circuitry for excellent phase response, low