Each equipments vacant digital input and analog input terminal are place where dust gets easily collected. Not only that becomes an origin of mixture for noise.
By letting these input terminal short-circuit, it prevents noise getting inside the equipment. Furthermore, letting the input terminals short-circuit, unstable element of electrical current on ground side gets removed and movement of machinery circuit becomes stable.
Result is, advantage for power supply impedance and sound quality improves greatly.
In addition, board for terminal part tends to be very thin. This receives the influence of vibration. By using high specific gravity and hard material for short pin, it reinforces terminals and protects from vibration.
Attention: Please don't connect it to output terminal, and REC out terminal. This will stop the sound.
Attention: It has an remarkable effect for digital output terminal on CD transporter, but just in case please ask your manufacturer of the CD transporter or dealer if SIP-8F/BSIP-8F work perfectly.