Power Output

140 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 140 watts, below 0.04% at 1 watt. (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical)

Power Bandwidth

(-3dB Points) 5Hz to 70kHz

Frequency Response

(-3dB points at 1 watt) 0.5Hz to 110kHz

Input Sensitivity

2.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms)

Input Impedance

300k ohms Balanced; 100k ohms Single-ended

Output Polarity

Non-inverting. Balanced input pin 2+ (IEC-268)

Output Taps

4, 8, 16 ohms

Output Regulation

Approximately 0.6dB 16 OHM LOAD TO OPEN CIRCUIT (Damping factor approximately 14)

Overall Negative Feedback

14dB

Slew Rate

13 volts/microsecond

Rise Time

2.0 microseconds

Power Requirements

105-130VAC 60Hz (210-250VAC 50Hz) 875 watts at rated output, 700 watts in Triode mode, 500 watts at “idle”, 3.6 watts off

Tubes Required

4 matched pair KT150 (Power output V1-4); 4 6H30 (Gain stage V5 and V6)

Dimensions

Width  19.0” (48.26 cm)

Height 10.25” (26 cm)

Depth  21.5” (54,61 cm)

With Handles and Connectors: 24” (60.96 cm)

Weight

100lbs