Features and Specifications of the Audio Precision APx555 Audio Analyzer include:

• Industry-best analog performance
• Residual THD+N: -120 dB (typical)
• Up to 1 MHz bandwidth @ 24 bits
• Signal generation up to 204 kHz and 26 Vrms
• 1.2 M point FFTs
• Use Sequence Mode or new Bench Mode for ultimate flexibility and control
• Support for the complete range of APx digital I/O options including 32-bit digital serial I/O
• AES/SPDIF advanced digital I/O
• Jitter generation and analysis
• Advanced Master Clock for Reference, Sync & Trigger
• Dual analog notch filters
• System Performance:
  • Residual THD+N (22 kHz BW):   –117 dB + 1.0 µV
    Typical <–120 dB (1 kHz, 2.0 V)
• General Performance:
  • Sine Frequency Range: 0.001 Hz - 80 kHz, DAC 5 Hz - 204 kHz, Analog
  • Frequency Accuracy: 3 ppm, DAC 0.35%, Analog (10 Hz to 100 kHz)
  • IMD Test Signals: SMPTE & MOD, DFD, DIM
  • Maximum Amplitude: 26.66 Vrms bal, 13.33 Vrms unbalanced (10 Hz to 100 kHz)
  • Amplitude Accuracy (1 kHz): ±0.03 dB (+15° C to +30° C)
  • Flatness (5 Hz - 20 kHz): ±0.008 dB
  • Analog Output Configurations: Unbalanced, balanced or CMTST
  • Digital Output Sampling Rate: 22 kS/s to 216 kS/s
  • Dolby / DTS Generator: Yes (file-based)
• Analyzer Performance:
  • Maximum Rated Input Voltage: 300 Vrms (bal) and 160 Vrms (unbal)
  • Maximum Bandwidth: > 1 MHz
  • IMD Measurement Capability: SMPTE & MOD, DFD, DIM
  • Amplitude Accuracy (1 kHz): ±0.03 dB (+15° C to +30° C)
  • Amplitude Flatness (10 Hz - 20 kHz): ±0.008 dB
  • Residual Input Noise (22 kHz BW): ≤ 1.0 μVrms
  • Individual Harmonic Analyzer: H2-H10
  • Maximum FFT Length: 1248K points
  • DC Voltage Measurement: Yes