The 6827A Power Supply / Amplifier provides dual outputs: -10v to +10v and -100v to +100v with 0.5 amps available on each range. Constant current, constant voltage operation. As a direct-coupled amplifier, each unit offers a signal-to-noise ratio of approximately 80 dB at full output with low distortion and a frequency response up to 40kHz in the fixed gain mode.