A detailed analysis of this circuit is beyond the scope of his paper but there have been several articles written on this circuit, including Demystifying Analog Circuits in Professional Audio ...

The buffer doesn't use rise time accelerators, using monolithic bipolar integrated circuit techniques. With low input to output offset voltages, it can be "daisy chained" and/or star configured. The ...

One of these areas is interfacing to the sampling networks of analog-to-digital-converters. Today's high-performance A/D converters are based on highly oversampled multi-bit delta-sigma conversion ...