Both great passives, the Placett is along the lines your Pass pre-amp..highly detailed in sound. The Bent is more laid-back at the extream upper fqz's..less detailed. Both units have very good mid-range quality, female vocals are truly magic. The Bent's bass reproduction is the better of the two IMO. If it matters, the Placette is single ended and the Bent can be balanced and (or) single ended. Cost of the two units was about the same at the time I had a listen.
Dave
Dave