Prices on these fluctuate wildly. I've seen restored DQ-10s go for $500-1000. Ones that need help can be found for $200. DQ-20's are often listed between $500-700.
According to the Stereo Review article mentioned above, the 10's were still being produced in 1988. I have no idea when they stopped making them. You might want to pose this question over at the Yahoo Dahlquist group:
http://tech.groups.yahoo.com/group/Dahlquist/
According to the Stereo Review article mentioned above, the 10's were still being produced in 1988. I have no idea when they stopped making them. You might want to pose this question over at the Yahoo Dahlquist group:
http://tech.groups.yahoo.com/group/Dahlquist/