NAD PP4 Phono Preamplifier Category--Hybrid & Tube Amplifiers A low-gain topology optimizes the

A low-gain topology optimizes the gain staging between the D/A converter and the power amplifier while minimizing noise

See John Siau's application note: "A Radical Approach to Power Amplification" for more details

This system protects tweeters from an overdriven amplifier

Additionally

NAD PP4 Phono Preamplifier Category--Hybrid & Tube Amplifiers A low-gain topology optimizes theRip LPs into WAV files Split Tracks Burn CDs Record Disks Look up Song Titles Handle File Management PP4 Digital Phono USB Preamplifier Digitise your vinyl collection Offering superb measured and sonic performance, NADs two simple solutions, the PP 4 Digital Phono USB Preamplifier makes it easy to add phono to many of todays stereo amplifiers and AV receivers that have either eliminated the phono input or included a low quality circuit for attaching