The audio Testa is an analog test tool designed specifically for sound engineers.
It has a powerful digital signal processor and a separate co-processor providing multiple audio monitoring and test signal generators. These include line level monitoring, microphone level monitoring with or without phantom power, tone generation, noise generation, phantom voltage check, a four-wire box facility, two wire monitoring, audio test tone loop and XLR cable test. The unit includes a balanced combo XLR/Jack input and an XLR balanced output, two headphone sockets (6.35mm and 3.15mm) and a torch LED. It includes a built in microphone and speaker and is supplied with a belt clip. The unit uses a standard nine volt battery or may be powered from its micro USB socket. The USB socket may also be used to update the Testa’s firmware. All settings are retained in non-volatile memory.
Operation of the device has been made as simple as possible using three push buttons and a 128*32 OLED white on black display which includes a level meter with PPM or VU style scale and ballistics. The unit includes an auto power off function.
The Testa may be powered using a nine volt battery or via the micro USB port. The power switch only operates when on battery power. Plugging in a micro USB cable will automatically switch the unit on.
When on battery power a battery symbol appears for three seconds on the top left of the display when switching between modes providing an indication of battery life. A solid block is a full battery. Bear in mind some functions may use more power, particularly generating 48 volt phantom power, a big ask for a nine volt battery. The unit may be made to automatically switch off if no button is pressed for a selectable period between 1 and 127 minutes. The Testa automatically switches off battery power when the micro USB is plugged in.