The Harman Kardon Onyx Studio 9 is a premium portable Bluetooth speaker designed to deliver exceptional audio performance and elegant aesthetics. It features a 50W RMS output powered by a combination of a 120mm woofer and three 20mm tweeters, ensuring rich bass and clear highs. The speaker boasts a frequency response range of 50Hz to 20kHz (-6dB) and a signal-to-noise ratio greater than 80dB, providing an immersive listening experience. Its Bluetooth 5.3 connectivity supports profiles A2DP 1.4 and AVRCP 1.6, with a frequency range of 2400MHz – 2483.5MHz and a maximum transmitter power of ≤ 12 dBm (EIRP).

Designed for mobility, the Onyx Studio 9 includes a built-in rechargeable lithium-ion battery (17.14 Wh, 4722 mAh) offering up to 8 hours of playtime, depending on volume and audio content. It charges fully in approximately 4 hours via a USB Type-C port (5V / 2.1A max). The speaker's dimensions are 289.2 x 287.5 x 130 mm, with a net weight of 4.2 kg, making it both portable and substantial.

For enhanced audio experiences, the Onyx Studio 9 supports multi-speaker connectivity through Auracast™, allowing users to wirelessly pair multiple Harman Kardon or compatible speakers. The built-in self-tuning technology automatically calibrates the speaker to its environment, ensuring optimal sound quality. Additionally, the Harman Kardon ONE app enables users to personalize audio settings, customize EQ, and manage all compatible speakers from a single interface.