Glensound HOWL 32 32 Channels Of Network Audio Feedback ProtectionThe Glensound HOWL32 is a high density frequency shifter for preventing audio feedback across Dante and AES67 audio networks. It can be fitted with a maximum of 4 independent frequency shifter cards. Each of these cards provides 32 audio inputs and 32 frequeency shifted audio outputs from the network. There are no user controls on the HOWL32 as the frequency shift function is preset what comes in, goes back at less 5Hz. This function means that if you