PS-100 Power Station 100 100W Tube Reactance Amplifier Specifications: Power: 100W (tube) Tubes: One 12AX7 (preamp); two 6550 (power amp) Power input (Max continuous): 200W @ 2/4 Ohms; 150W @ 8 Ohms; 200W @16 Ohms Output impedance: 2/4, 8 or 16 Ohms, selectable ...