Saramonic SR-AX100 Passive 2- Channel Audio Adapter for DSLR Cameras

The technical details behind this audio mixer
Gain control of your audio for your camera with the Saramonic SR-AX100 Passive 2-Channel. This two-channel mixer allows users to connect and mix two microphones into one mic input to cameras. This battery-free audio mixer features a built-in shoe mount with 1/4-20 tripod thread, three 1/8“ or 3.5mm (one stereo and two mono) inputs, and two knobs. It also has additional shoe mounts for accessory mounting.
Top three reasons we think you will love this audio mixer

Durable metal construction
Ultra-compact
Easy to use
Includes
Short, coiled 3.5mm output cable with gold-plated connectors
SR-AX100 audio mixer
Printed manual