The HB-BL2 is a Bi-Directional stereo balancing, unbalancing and level-shifting interface used to inter-connect consumer, semi-professional and professional audio equipment.

The HB-DA6EX is a professional audio distribution amplifier designed for broadcasting station and reading studio.

The HB-DA6TX is a professional audio distribution amplifier designed for broadcasting station and reading studio.

HB-HD6 is a professional studio headphone distribution amplifier designed for broadcasting station and recording studio. It provides up to six channel headphone outputs with individual control.

The HB-MA2 is a dual channel professional studio microphone stage with Low Frequency Filter.

The HB-MM31 is a professional three-channel microphone mixer for multi-element microphone or combine more audio inputs.