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OCL stands for "output capacitor-less." The circuit is almost completely DC coupled except for one protective 10uf coupling capacitor at the input. These kits are being advertised as 80 or sometimes 100Wx2, but they are really more like 15 or maybe 20Wx2, at best. They go for about 10 to 15 bucks each.
If you want to give this circuit a try, note that two different versions appear to be available on ebay and amazon. The two versions have slightly different PCB layouts and schematics, but the transistors used are the same. The dark green PCB version does not have holes for mounting it in a cabinet with standoffs. The light green PCB version, however, has 4 holes on the ends for standoffs. Since they were cheap, I ordered both versions. With each kit, you get a small bag of discrete semiconductors, caps, resistors, heat sinks and a PCB (see pic). No power transformer or case.
My goal will be to assemble the board, test it on my bench power supply, and then complete the project with a suitable case and power transformer. I'll stop back periodically with updates as I go along. Should be a fun project.