Zoom ZHA-4 They control the quality of

They control the quality of the materials and the manufacturing process

BT-receiver for audio streaming

error detection and correction

the MITUS 206LA maybe used also in  outdoor applications where the system is not directly exposed to the elements

using close-tolerance components for high accuracy and repeatable settings for EQ and gain controls

Zoom ZHA-4 They control the quality ofPerfect for mobile recording setups and podcasting, the Zoom ZHA 4 Handy Headphone Amplifier lets up to four people monitor audio from their headphones, dictating their own levels all the while. Four headphone outputs are on hand, as are four individual volume knobs to control levels, and four individual mute buttons. This is a battery powered device, lasting between 3. 5 and 4. 5 hours on a single pair of AA batteries. However, you can also power it