Two high-quality buffers.
First buffer is based on Discrete Class-A
Second buffer is based on Low-Noise Op-Amp

Prevents the loss of signal level, high frequency and low end punch
that is caused by impedance mismatch and cable capacitance

Some Fuzz or Wah pedals don’t like to be fed with a buffered signal.
For this reason, the first buffer can to be bypassed.

You can avoid Ground Hum/Noise that may occur when two buffers
are used for different signal routing, because the second buffer is
supplied with fully isolated power.