We thoroughly endorse the use of NTi (originally Neutrik) test tools, using these items ourselves for product verification and on-site service work. Essential for supplying, analyzing and measuring signals through your audio equipment - in both the digital and analogue realms.

All of these instruments are available in fully calibrated form with an official NTi calibration certificate - which is essential if these devices are to be legally depended on. Please select this option on the product page.