Not manufactured any more.

I own a set of the DQ10's.  Picked them up for $375 from the local retirement center about 3 years ago.  Mint! 1 owner, all original except for a refoam.  They still amaze me when I put something on that I haven't heard in years...70's-80's era stuff that I'm very familiar with..Hear things I'd never heard.  And especially 60's-70's Jazz titles.

Tannoy Lancaster

Spica TC-50s

Polk Audio SDA SRS Signature Reference System 

I will never forget the first time I heard these.