Audio Precision Keeps Raising The Bar For Audio Test

Today’s audio-equipment designers are faced with more options and challenges than their peers of just 10 years ago. And with those challenges and choices comes the need for accurate, reliable, and repeatable audio test procedures. Audio Precision of Beaverton, OR has been setting the standards for audio testing with high-quality instruments since 1984. And the flagship of the company’s offerings is its APx555 audio analyzer.

With about 30 years of roadwork behind it, the APx555 may just be the most powerful and capable audio test instrument ever developed. As per the company, the instrument outperforms its SYS-2700 series. Relying on a modular architecture and robust software, the APx555 boosts measurement accuracy, speed, flexibility, automation and ease-of-use.

Just some of the notable features include a typical residual THD+N of -120 dB, conservatively specified at -117 dB, a mono bandwidth of 1 MHz bandwidth, FFT resolution of 1.2 million points, and low-distortion sine-wave generation up to 204 kHz at amplitudes up to 26 VRMS.

Interfacing and I/O are constant chore when it comes to audio tests. In response to that, AES3 and S/PDIF are standard on the APx555 as well as support for all APx options, allowing native connectivity and analysis of audio via Bluetooth, HDMI, Digital Serial (I2S, TDM) and PDM (1-bit oversampled) formats. The APx555 provides a full range of AES3 and S/PDIF digital output impairments, including jitter generation and analysis. Additionally, a new advanced master clock handles input and output clock signals to synchronize the APx555 with external equipment.

For more details and how to enter a contest to win a new APx555, go to  

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