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).
HVAC products became Tappan Air Conditioning division in 1972. American Standard purchased the Trane Company in 1984, American Standard name revived in 1988. In 2007 all but HVAC sold off, corporate name changed to Trane. Trane was them purchased by Ingersoll Rand.UXAIRE: Founded in 1939 by C. A. Olsen, purchased by Westinghouse in 1955, was purchased by York in 1981. MAGIC CHEF: In 1986, Magic Chef was acquired by the Maytag Co. Air conditioning division was sold to Lennox in 1988 and renamed Armstrong Air. See Johnson.