SPL is represented in the current MicPro catalogue by Crescendo 8 microphone preamp. The listed range is relevant to multi-channel studio microphone preamplification. When comparing these products, check channel count, gain, noise, headroom, phantom power, metering, outputs and rack or converter integration. It is relevant to tracking setups that need several consistent microphone inputs rather than one small interface channel. This description is kept catalogue-led, so the individual model listing remains the source for exact specifications, compatibility and included accessories.