Another +1 for Hifiman5. I have had a pair of Vandy 2Wq subs in my system for about 8 years. I bought both of them used, and they have been trouble free. I did eventually upgrade to the battery-biased crossovers, which made a significant improvement in transparency. All I can say is that, once dialed in, and placed in corners (as per the design manifest), these subs produce deep, clean, musical bass in abundance. Best of all, they seamlessly blended with both my Vandersteen 1Cs (as you would expect), and my Ohm Walsh 2000s. I think I am set on the Ohms for good. However, if I ever upgrade my speakers, I will insist on speakers that will work with the 2Wq subs. They are in my system to stay. They are that good. Also I think they are one of the most underrated subs - or even pieces of audio gear in general - ever made.