guitarguy12387
Well-known member
Hey, quick headphone distribution amp question.
So i'm thinking about a 5 channel (5 in, 5 out) headphone distribution amp. Simple ne5534 non-inverting amp, similar to gyraf's design. Each channel will be able to select which input to use.
I just want to confirm or deny what i'm thinking. I was considering whether or not the inputs will need to be buffered. Worst case (when all channels select the same input) input impedance will be 20k (as per the datasheet, the ne5534 has a typical 100k input resistance, paralleled 5 times gives 20k). I am thinking this will be plenty high enough so i shouldn't need to buffer the inputs. Correct?
Thanks!
So i'm thinking about a 5 channel (5 in, 5 out) headphone distribution amp. Simple ne5534 non-inverting amp, similar to gyraf's design. Each channel will be able to select which input to use.
I just want to confirm or deny what i'm thinking. I was considering whether or not the inputs will need to be buffered. Worst case (when all channels select the same input) input impedance will be 20k (as per the datasheet, the ne5534 has a typical 100k input resistance, paralleled 5 times gives 20k). I am thinking this will be plenty high enough so i shouldn't need to buffer the inputs. Correct?
Thanks!