Trek High Voltage High Frequency Power Amplifier 2100HF. Current Model SN 139
This is the high frequency model that can boost output current to +/-300 mA and double slew rate to 2000 V/us, bandwidth to 2 MHz kHz (3 dB). Output voltage +/-150 V [fixed voltage gain 50 V/V).
Very clean, three months warranty, with all cables (input, monitor, grounding, HV output), free skype training.
For full datasheet, please visit Trek website for current model 2100HF: