| Frequency response | ±.5 dB, 2.0 Hz to 100 kHz. -3dB points below 1 Hz and above 200 kHz |
|---|---|
| Distortion (THD) | Less than .01% at 2V RMS output. (Typically less than .005% in midband) |
| Noise & hum | 18 µV RMS maximum IHF weighted noise at main output with gain control minimum (more than 100 dB below 2V RMS output, or 4V balanced output (LS3B)) |
| Gain | Main output: 18 dB (optional 10 dB gain reduction) |
| Tape output: 0 dB | |
| Balanced output (LS3B): 24 dB | |
| Input impedance | 50 kOhms (100 kOhms Direct) |
| Output impedance | 250 Ohms main output. 500 Ohms balanced (LS3B). Recommended load 60 kOhms and 100 pF (20 kOhms minimum and 1000 pF maximum) |
| Output polarity | |
| Maximum inputs | 20V maximum |
| Rated outputs | 2V RMS 2 Hz to 100 kHz, all outputs, 60 kOhm load (maximum output 35V RMS, 70V RMS balanced (LS3B) at 1/2% THD at 1 kHz into 100 kOhms) |
| Power supplies | Electronically-regulated low and high voltage supplies. Line regulation better than .01%. |
| Power requirements | 100-135VAC 60 Hz (200-270VAC 50/60 Hz) 25 Watts maximum (35 Watts maximum LS3B) |
| Dimensions | 19″ (48 cm) W x 5 1/4″ (13.4 cm) H (standard rack panel) x 10 1/4″ (26 cm) D. Handles extend 1 2/3″ (4.1 cm) forward of front panel. Rear chassis fittings extend 1/2″ (1.3 cm) |
| Weight | LS3: 11 lbs. (5.0 kg) Net; 19 lbs.(8.6 kg) Shipping. |
| LS3B: 12 lbs. (5.5 kg) Net; 20 lbs.(9.0 kg) Shipping. |
