QSC SPA2-60 2-Channel Compact Power Amplifier, 60W at 4 Ohm, 70VThe SPA2 60 two channel amplifier delivers up to 60 W RMS per channel into 4 or 8 . The 2 channels can also be bridged, providing up to 200 W RMS into 4 or 8 . When the channels are bridged they can be switched into 70 V or 100 V direct drive mode providing up to 250 W RMS into a mono 70 V or 100 V output. Like the other SPA models, an 80 Hz high pass filter is engaged when in 70 V or 100 V mode. Utilizing an advanced Class D amplifier design and