The Kopul SDI-PPC is a stereo, passive DI Box designed to bridge the gap between consumer-level audio sources and pro audio destinations. With this unit, you can route the audio of instruments, smartphones, tablets, receivers, and more into mixing consoles or PA systems.
On the input side of the SDI-PPC, you’ll find two 1/4" TS jacks. These are suitable for instruments such as electric guitars, basses, and keyboards. If you're using only one of the 1/4" inputs, the other can function as a parallel output, allowing you to send the copy of the signal to an amplifier. This usage lets you split a guitar signal during recording, so you have the amped track in addition to a clean, DI’ed take to use during the mixing stage. A 3.5mm input is on hand for playing backing tracks from smartphones, tablets, and other compatible media players. Rounding out the input section are two RCA jacks for turntables, A/V connections, computer soundcards, and more. Two XLR connectors are provided for outputs.
The SDI-PCC makes use of a passive design that employs custom-wound transformers for matching low-impedance sources to high-impedance destinations; thus, you can plug your guitar or stereo backing-track into the input, route the output directly to a mixing console or PA system, and mitigate the noise issues often associated with plugging straight in. These transformers are isolated to eliminate buzz and hum from ground loops. Furthermore, they help the unit to secure a warm sound that smoothen the frequently-harsh characteristics of audio streaming from digital sources. With 128 dB of dynamic range, you don’t have to worry about high signal levels clipping or distorting, and for extra measure, a -15 dB pad can attenuate levels that are too high for the device. The SDI-PPC features a sturdy aluminum housing suitable for withstanding the rigors of touring life.