No acoustic differences exist between the first- and second-generation Minis.

• What is the lowest frequency the Song Meter Mini Bat's ultrasonic microphone can record?
• What is the lowest frequency the Song Meter SM4BAT FS can record?
• Why can't I use an adapter to connect a USB-C Echo Meter Touch to my Lightning iOS device?
• Can I use Echo Meter Touch modules with USB connectors with iOS devices?
• What adapter do I need for my Echo Meter Touch module and Android or iOS device?
• What type of plug does my Echo Meter Touch module have?
• What iOS devices are compatible with my Echo Meter Touch module?
• What type of data port does my phone or tablet have?
• How do I update the firmware on my Echo Meter Touch module with USB to add iOS compatibility?
• Are there acoustic differences between the first- and second-generation Mini Bat recorders?
• Will the Lithium-ion lids I used with first-generation Minis fit the new models?
• Will the security bracket accessory I use with first-generation Minis be compatible with the new models?
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