Presonus Eris Active Speakers (B-Stock) Listed as b-stock as a customer bought on Amazon, tried them and then returned them as they often do on Amazon!!! All working fine but show some very minor signs of useEris professional studio monitors by PreSonus use quality components, are well constructed, and deliver professional audio quality. They deliver accurate response, tight bass, and clear upper end. They're also lightweight and compact, and look as professional as they sound. PreSonus offer small, medium, and large Eris-series monitors: the E4.5, E5, and E8. All Eris speakers feature Kevlar® low frequency transducers, low-mass silk-dome tweeters, and responsive Class AB amplification. The ultra-compact and potable E4.5 has a 4.5-inch low-frequency driver and a 25W Class AB amplifier that gives it plenty of juice. The next step up in size and power is the E5, which sports a 5.25-inch low-frequency driver and a 45W Class AB amplifier. For an extended low-frequency response and a bit mo