You are bidding on a lightly used MINT condition Black Lion Audio PM-8 Summing Mixer. I am the only owner of this unit and have only used this on two album projects in my smoke free home studio. Item ships with power supply. The following excerpt is from the manufacturer’s website:   Black Lion Audio PM8 Summing Mixer   Introducing the Black Lion Audio PM8 Summing Mixer. It features 8 channels of transformer-coupled inputs and three separate master outputs: a passive output, a transformerless output, and a transformer coupled output. It has mute, volume and pan capability on each channel, plus a DB25 connection to link a second summing box. Huge ¾ watt bus resistors provide isolation between channels while minimizing the thermal noise typically found in a small format console bus. Grain oriented silicon steel input and output transformers lend a rich coloration to the sound by adding just a touch of low-order distortion below 250hz. It’s like having a vintage console in your studio, but at a fraction of the price. It’s exactly what you need to give your mixes that fat body you’ve been looking for.   Summing in the analog domain is widely regarded as superior to mixing “in the box.” The DSP required to sum individual channels into a stereo pair is prone to clock-based errors and mathematically unrelated signal artifacts, something avoided entirely by mixing down in the analog domain. While issues of channel cross-talk, thermal noise and distortion are problems faced in the analog world, these artifacts are considered more euphonic than those created in the digital domain.