jolida 502b manual bias adjustment

I own the JoLida 502B. It was my first introduction to tubes. It is manual bias. Just use a long handled screwdriver...haven't burned myself yet. A 5 minute job at most.

oh...ok - gotcha - I picked up an inexpensive multimeter from Sears. Probes are 4-5" long or so. It does take a little care to get a stable connection and when moving them, but again - no burns yet (famous last words).

http://www.jolida.com

Have you tried contacting JoLida in Maryland about a manual (also your tube placement question)?

However, from the image here, the 12AX7s are on the inside.
http://www.usaudiomart.com/details/649259448-fs-jolida-502-brc-integrated-tube-amp-w-upgraded-tubes/...