Monolithic Power Systems Acquires Axign

Monolithic Power Systems (MPS), a global company specializing in high-performance power solutions announced the acquisition of Axign B.V., the Netherlands-based fabless semiconductor startup that specializes in programmable multicore DSP (digital signal processors) and developed the innovative post-filter feedback loop technology for Class-D amplifiers with balanced feedback from the loudspeaker. An exciting development for the small Dutch company and for the audio industry.

The AX5689 is an eight-channel audio amplifier controller IC with digital inputs and CMOS level PWM outputs, enabling high-order digital control loops with post-filter feedback. This article, originally published in audioXpress, December 2023, reviews the Axign and GaN Systems Class-D audio amplifier reference design board, intended to demonstrate the benefits of Axign's digital controllers and its unique approach.

TransAudio Group is now taking orders for the Bettermaker Mastering Equalizer, the latest tool from the Polish pure high-end analog signal specialists, which are able to offer complete digital control, including digital plug-in recall and automation. The Bettermaker Mastering Equalizer is configured for stereo, dual mono, or M/S operation and features four parametric bands, low- and high-cutoff filters, and a passive Pultec-style section with “air bands” at 23kHz and 28kHz.

PreSonus, the Baton Rouge mercenaries of the digital backstage revolution, announced another 8-channel microphone preamplifier and A/D/A converter to complement its range of advanced recording interfaces, offering high-quality 24-bit/96kHz audio at affordable prices with sophisticated software control options.

The new THAT1580 is a versatile, high performance current-feedback amplifier which improves price-performance ratio for differential microphone preamplifier and bus summing applications. The 1580 is designed to mate perfectly with THAT’s series of Digital Preamplifier Controller ICs.