5 Your 104M, 1:4 Microphone Amplifier
The 104M is a high quality distribution amplifier for dynamic microphone
signals. It accepts a microphone input and distributes the signal to four
identical line-level outputs.
The 104M:
• Includes audio level (Gain) control
• Has an S/N ratio of 78dB
• Is 12V DC fed
Figure 3 and Table 3 define the 104M
1:4 Microphone Amplifier
Figure 3: 104M Microphone Amplifier
Table 3: Features and Functions of the 104M Microphone Amplifier
1 OUT 6.5mm Phone Connector Connects to the audio acceptors (from 1 to 4)
2 GAIN Trimmer
1
Controls the audio output level
3 INPUT 6.5mm Phone Connector Connects to the mono microphone audio source
4 ON LED Illuminates when the machine is powered
5 12V DC +12V DC connector for powering the unit
1 Insert a screwdriver into the small hole and carefully rotate it to adjust the audio level