HealthKit SB-221 Full Manual with nice clear Fold Out Schematic.  Professional style spiral bound reproduction. This manual includes 10 pages of addendums to cover newer revisions to this amplifier

Nicely done reproduction of the original HealthKit assembly manual including a nice clear foldout schematic page and heavy weight front and back cover pages. There are check marks on many of the assembly steps and some notations on one of the pages.

Shipping is quoted for Continental US only. Hawaii, Alaska, Puerto Rico, U.S. territories and international buyers please request invoice prior to paying so that I may provide the best shipping cost. 

Immediate payment greatly appreciated.