Accessories: Hard case, soft case, wax cleaning tool, cleaning cloth
Personal Sound Tuning System (PSTS)
PSTS will enable adjusting the sound to suit your preferences by exchanging resistors on the faceplate. It is possible to fine-tune the vocal overhang of the massive mid-range and low-frequency by changing the value of the resistance provided. After the most suitable choice is decided, you can choose to permanently seal the resistor, so called "coating services" (purchased separately for S$100).
Please mail your ear impressions to: Null Audio #06-09 Alexcier, 237 Alexandra Road, Singapore 159929
Please send an email to email@example.com for ear impression instructions.