The Bogen Classic Series 20-watt amplifier is a great choice. It can work with low-impedance microphones and high-impedance auxiliary sources. It has 2 low-impedance balanced microphone inputs or can take 1 microphone and 1 auxiliary input. You can mute the AUX input when using a customer-supplied SPST normally open switch for microphone precedence. It also features independent volume controls and a treble control for perfect tonal balance.
Using this amplifier is easy. First, connect your low-impedance microphones or high-impedance auxiliary sources to the appropriate inputs. You can choose to use 2 low-impedance balanced microphones or combine 1 microphone with 1 auxiliary input. If you want the microphone to take precedence, use a customer-supplied SPST normally open switch to mute the AUX input. Adjust the volume and treble controls according to your needs to get the best sound. When it comes to maintenance, keep the amplifier in a dry and clean place. Make sure to turn it off when not in use. Don't expose it to extreme temperatures or humidity. Also, check the connections regularly to ensure they are secure.
