AG-9 "Made to order" for hi-fi use. Frequency: 10 cps to 100 kc.switch selected, 2 significant figures and multiplier. Quick, accurate selection of low-distortion signals throughout the audio range. 3 rotary switches on front panel allow selection of 2 significant figures and a multiplier for setting the frequency. Step-type output attenuator as well as a continuously variable attenuaator. Large 4 ½” meter indicates output in volts and db. Attenuator operates in steps of 10db, corresponding to the meter calibration. Output ranges: 0-0.003, 0.10, 0.03, 0.1, 0.3, 1.0 RMS into 600 ohms and 3.0 & 10-v RMS with internal load into Hi-Z, -60 db to +22 db in 8 steps; -60 dbm to +2 dbm (0 dbm=1 MW--600 ohms). Load switch provides internal 600-ohm load or an external load of higher impedance when required. Output frequency indicators are accurate within 5%. Distortion less than 0.1 of 1% from 20 Hz to 20 kHz. Oscillator frequency is selected entirely by switching, ensuring accurate resetability. Tubes: 1-6AU6, 1-6CL6, 1-6X4 Power Requirements: 105-125 VAC, 50-60 cycles, 40 watts Dimensions: 9½" wide x 6½" high x 5" deep 8 lbs. 1957 price: $34.50.