We just acquired this equalizer from a home recording studio and must say, it is a very good equalizer. Unlike many lesser “quality” equalizer, we found this to be quite accurate in its enhancement of the music we were listening. With some quick adjustment, we were able to improve the detail and presence of the music presentation. If you have one source in your system, you could just connect it directly to the D-1500 and from the D-1500 to your integrated or preamp. If you have multiple sources, you can fit the D-1500 between the pre and poweramp. In that way, you can have the D-1500 work on your different sources you are listening.
Cosmetically, the unit looks good with minor scuff marks common with use. Unit will be securely packed for safe shipping. XLR/RCA adapter not included. You will need to get them if you are using RCA cables.