The Yaesu SP-9000 is equipped with two 100mm speakers that offer independent audio paths for the Main and sub-VFO audio output. The right speaker specifically delivers the Sub VFO audio, and a front panel switch allows users to combine audio signals from both receivers for mixed distribution through the two speakers. With an effective aperture of 200mm, this product ensures outstanding tonal quality.

Featuring advanced audio filters, the SP-9000 provides three steps of high-cut filtering at 2400/1000/700 Hz and two steps of low-cut filtering at 500/300 Hz. Each audio path (Main/Sub) can be individually filtered, enabling users to experiment with diverse dual reception filtering modes. Additionally, the unit is equipped with individual mute switches for dual receive operation, enhancing user control and flexibility.

The SP-9000 comes with twin headphone jacks conveniently located on the front panel, allowing users to monitor VFOs A and B simultaneously. The speakers, with identical specifications for the left and right channels, feature a speaker aperture of 100mm, a maximum input of 7W, and an audio frequency response ranging from 100 to 12,000Hz. The unit's compact case size of 246 x 182 x 438 mm (without knobs/jacks) and weight of approximately 4 kg make it a versatile and user-friendly audio accessory.