Emotiva BasX A4+ Four-Channel Power Amplifier

Four channels goes farther than you think.

The BasX A4+ Four-Channel Power Amplifier adds dedicated power to four speakers in your system. Perfect for taking the load off your receiver or adding channels to your processor to handle your surround or height channels. The A4+ is rated at 100 watts per channel into 8 ohms (20 Hz to 20 kHz). Effects stay sharp and loud scenes stay smooth.

Inside, a linear power supply with a heavy duty toroidal transformer feeds an audiophile-quality Class A/B output stage. That is the foundation for clean, stable power.

The major BasX Plus upgrade is connectivity. The A4+ adds balanced XLR inputs on every channel, along with standard RCA. Use XLR when your gear supports it for a lower-noise connection. Use RCA when it does not. To set up, connect the A4+ to an AV processor, a preamp, or an AVR with preamp outputs, the jacks labeled “PRE OUT.” Then wire your speakers to the audiophile grade 5-way binding posts. Add 12V trigger in and out for automatic power-up. Built-in protection guards against common fault conditions. The A4+ is rated for 8 ohm speakers and supports 4 ohm operation.

Common uses: