I have a JD9 and really like it, but it does take some adjusting to get the best sound from it. Use the chart below to set the switches to the settings you like. It is worth the effort. Also you might try different types of 12AX7 tubes.
http://gallery.audioasylum.com/cgi/gi.mpl?u=32746&f=jolida_jd9_settings1.jpg
Also, there is an Official JD-9 Thread over at AudioKarma.
http://www.audiokarma.org/
http://gallery.audioasylum.com/cgi/gi.mpl?u=32746&f=jolida_jd9_settings1.jpg
Also, there is an Official JD-9 Thread over at AudioKarma.
http://www.audiokarma.org/