An audio signal processing device comprising: a plurality of input channels for inputting audio signals, a mixing bus for mixing the input audio signals, an output channel for receiving the mixed audio signal from the mixing bus, said output channel comprising a first level adjustment module for adjusting level of the audio signal in the output channel and a first ON/OFF control module for turning ON and OFF the audio signal in the output channel, an output device for outputting the audio signal processed by a direct output module, and the direct output module connected to the output device and provided outside the output channel; characterized in that a plurality of output points are respectively provided before or after a signal processing module on a signal processing path in the output channel; the audio signal processing device comprises a selector for selecting one of the output points to supply the audio signal at the selected output point to the direct output module; and the direct output module comprises a second level adjustment module for executing the same algorithm on the audio signal in the direct output module using the values of the same parameters as the first level adjustment module, and a second ON/OFF control module for executing the same algorithm on the audio signal in the direct output module using the values of the same parameters as the first ON/OFF control module, and in that the direct output module comprises, for each of the second ON/OFF control module and the second level adjustment module, a switch (123, 125) for switching whether or not the audio signal supplied to the direct output module is processed by the respective one of the second ON/OFF control module and the second level adjustment module. a plurality of input channels for inputting audio signals, a mixing bus for mixing the input audio signals, an output channel for receiving the mixed audio signal from the mixing bus, said output channel comprising a first level adjustment module for adjusting level of the audio signal in the output channel and a first ON/OFF control module for turning ON and OFF the audio signal in the output channel, an output device for outputting the audio signal processed by a direct output module, and the direct output module connected to the output device and provided outside the output channel; characterized in that a plurality of output points are respectively provided before or after a signal processing module on a signal processing path in the output channel; the audio signal processing device comprises a selector for selecting one of the output points to supply the audio signal at the selected output point to the direct output module; and the direct output module comprises a second level adjustment module for executing the same algorithm on the audio signal in the direct output module using the values of the same parameters as the first level adjustment module, and a second ON/OFF control module for executing the same algorithm on the audio signal in the direct output module using the values of the same parameters as the first ON/OFF control module, and in that the direct output module comprises, for each of the second ON/OFF control module and the second level adjustment module, a switch (123, 125) for switching whether or not the audio signal supplied to the direct output module is processed by the respective one of the second ON/OFF control module and the second level adjustment module.