Thanks for the table. Downloaded for as important reference information. The amplifier gain for the High output will be exactly 4, for the L output exactly 2. I measured the highest possible level at the High output. It turned out +12.5 dB on a load of 100 ohms. I tested with an external generator whose THD is unknown to me. Therefore, the maximum voltage was determined by the absence of visual distortion of the sinusoid shape. I assume that at this level, THD will be more than 1%, but less than 3%. Of course, such a high level will not be used in real life, but the power reserve will not hurt, especially on dynamic musical compositions.