Behringer Ultracurve Pro DSP8024 RTA EQ Circa 2001 Upgraded firmware from VER 1.2 to 1.3A solves some operational issues. Hard to find unit with this upgrade because the chip was purchased separately you will also get the old 1.2 chip in case you want to downgrade. You can plug an XL mic in the back and the unit will automatically adjust your room response via an RTA analyzer Excellent sounding unit works great for fine tuning your Home audio system. I was using it as a SUB woofer EQ. Doesn't come with a PWR cord. if you decide to purchase just message me and I will include one if you need one. Comes with everything you see in the pictures including the rack mount ears. Please message me with you questions all sales final.