Is it safe to touch the output channel connections while the A4ti is powered on?
No, touching uninsulated output channels or bare wiring while the unit is powered on may result in an unpleasant sensation. You must not touch uninsulated output channels or bare wiring when the power is on. (Page 2)
From the official Dbtechnologies A4TI Professional 4 Channel Power Amplifier manual, page 2
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