As for many Audio Precision resemble the holly grail of audio measurement devices, this might be worthy of attention. Audio Precision just announced their new The APx1701 Transducer Test Interface...
The APx1701 Transducer Test Interface is an APx accessory device that integrates instrument-grade amplifiers and microphone power supplies for designers and production test engineers seeking clear insight into the behavior of their electro-acoustic devices.
Primarily designed for electro-acoustic testing, the system drives loudspeakers and headphones with dedicated power amplifiers, enables impedance measurements, and provides power to measurement microphones and microphones under test. Its functions are integrated with the APx500 audio measurement software and a connected APx analyzer.
Quiet, Clean and Flat – A New Standard in Amplifier Performance
With an industry-leading signal-to-noise ratio of 134 dB, the APx1701 provides 20 dB of fixed-gain amplification from DC to 100 kHz. In the frequency range of 10 Hz to 20 kHz, the APx1701’s residual THD+N is ≤ -106 dB (80 kHz BW), and frequency response is ±0.08 dB (DC-coupled). The system’s power amplifiers are configured as two independent channels, with power ratings up to 100 W for a single channel into 8 Ω. Voltage taps across integrated current-sense resistors in the amplifier outputs enable easy impedance measurements.