Why Yamaha Called It Buffer?

[Richardjhy]

Isn't it a non-inverting op-amp circuitry and Vout/Vin = 2 ?

 

[fpitas]

A buffer is a generic name for a gain or digital stage that prepares the signal for the main stages, sort of like a preamp.

 

[sergeauckland]

A buffer doesn't have to be unity gain, it can have some gain. What makes it a buffer is what it goes between. If it separates two stages, and creates a high impedance to the earlier, and provides a low output impedance to what follows, then it's a buffer.

S

 

[fpitas]

A buffer doesn't have to be unity gain, it can have some gain. What makes it a buffer is what it goes between. If it separates two stages, and creates a high impedance to the earlier, and provides a low output impedance to what follows, then it's a buffer.

S

I suspect that is the exact purpose here.