Phase Linear 400 model

Power Amplifier

• Power
  • 8 Ω: 270 W (200 advertised), bandwidth: 10 Hz to 20 kHz
  • 4 Ω: 380 W, same bandwidth
  • 8 Ω: 400 W at 1 kHz
  • 4 Ω: 600 W at 1 kHz
• Peak power into 4 Ω (IHF measurement): 1200 W

Measurements

• Unweighted signal-to-noise ratio: over 100 dB
• 50 Hz and 15 kHz sinusoidal signal levels are flat
• Intermodulation distortion is 0.08% from 7 milliwatts to 250 W
• Rise time is 1.5µs
• Bandwidth is flat from 0 Hz to over 20 kHz (0 dB)
  • -1 dB at 100 kHz
  • -3 dB at 210 kHz
• Harmonic distortion from 1 W to 200 W is between 0.008 and 0.013 depending on frequency. Just before clipping (250 W / 8 Ω), it is 0.13.
• The PHASE LINEAR 400 is unconditionally stable on electrostatic panel loads