BGW Performance Series 2 Power Amplifier Amp PA DJ USA Made. The original BGW amplifier model, Performance Series 2. USA Made and built like a tank, with the world renowned BGW sound that makes it legendary. Amplifier works perfectly, with plenty of raw power and perfect sound. Shows regular wear and tear, but these amps live forever! BGW Performance Series 2 Specifications. Power Output – Per Channel. Intermodulation Distortion Less than 0.05% at rated output. (SMPTE method, 60Hz & 7kHz, 4:1 ratio). Small Signal Frequency Response 8Hz – 175kHz +0, -3dB. DC Offset Voltage Less than 10 millivolts at output terminals. Hum and Noise Level Better than 100dB typical below rated. Output into 8 ohms A-wtd. Input Impedance (/ch) 10k ohms balanced. Input Sensitivity 0.775 Vrms for rated 8 ohm output. Voltage Gain 34.2dB. Damping Factor Greater than 200:1 ref. Load Impedance 4 ohms or greater. Power Specify operation for either 120, 220 or 240 Volts AC, 50-60Hz. Height 2U 3.25 inches (8.89 cm). Width 19 inch standard rack front panel (48.3 cm).