I bought this mic brand new about 6 months ago. It comes in a nice plastic foam lined case, with the mic and mic clip inside. This mic has a really striking appearance. It is nickel plated, with a "leatherette" finish on the top and bottom. It feels VERY solid.
There are two adjustments on the mic. On the bottom of the mic there is a 'brilliance' treble boost switch. And there is also a 5-position bass roll of switch, but in all honesty, I couldn't find it for a while! Sennheiser doesn't include any instructions which explain where these adjustments are, you are on your own. Anyway, the 5-position bass roll off switch is actually on the black plastic ring at the end of the mic, right next to where the cable plugs in. The ring turns and there is an "S" (for "speech") and an "M" (for "music"). The letters are on either side and there are 5 positions inbetween.
In practical use, I've only tried this mic on vocals and electric guitar. I recorded my 1962 Fender Jaguar, with a nice clean reverb sound with this mic, and it sounded wonderful. WAY more "real" than my sm57. I haven't tried this on distorted guitar, so I can't comment. The 441 is very flat sounding though. This "flatness" really comes through on vocals. When I sing into this mic, it's hard to really describe...it sounds "different". Tweaking the adjustment switches is a good start, but will it sound great on your voice? I'm not sure what to reccommend. I haven't recorded vocals with it, but I plan to soon. I will post my results here afterward.
But if you try to use this live (for vocals), be prepared for NASTY feedback. You've been warned!
Overall, I haven't had a chance to REALLY put this mic to the true test yet. Only time will tell. But the fact is, it's a great looking, classic mic, that might work VERY well based on what you plan on using it for!