The maximum measured output impedance was 0.16 ohms, at 20kHz into a 4 ohm load, this decreasing to less than 0.1 ohm at 1kHz. This is not unusually low for a solid-state amplifier, but low enough that any effect on the amplifier's frequency response with a real load will be small.
The History of American Girl Dolls and Pleasant Company and changes in Book Illustrations. Pleasant Company began in 1986 in Middleton, Wisconsin. The company was founded by Pleasant T. Rowland, a woman who used to be a teacher and a publisher of educational texts. Rowland sold Pleasant Company in 1998 to Mattel. Pleasant Company is now legally called American Girl. The first catalogue contained only 3 historical dolls, whereas now there are 10 (not counting the new addition of the best friends dolls).
The result was the Barbie doll (named in honor of the Handlers' daughter), a pint-sized model of the girl next door.. Mattel finally agreed to back Handler's efforts; and the Barbie doll debuted at the American Toy Fair in New York City in 1959. Girls clamored for the doll, and Barbie set a new sales record for Mattel its first year on the market (351,000 dolls, at $3 each). Since then, Barbie's popularity has rarely flagged; and today, with over one billion dolls sold, the Barbie product line is the most successful in the history of the toy industry.