DC on op-amp input, audio amplifier
Always read the datasheet.  The NE5534 has an input bias current of 500-2000nA.  (500nA)(22k\$\Omega\$) = 11mV.  So you're getting just about exactly the expected voltage across R1.  If you put a resistor between your output and the inverting input of the op-amp, then it'll have the same bias current, \$\pm\$ the input offset current (which is 20nA up to a fairly hefty 300nA, so you may not win if you need better DC offset than that).

Here's a multi-purpose canonical connection for an op-amp with bias current.  You need to choose R1, R2 and R3 so that R3 is equal to the parallel combination of R1 and R2.  An alternate way of thinking of it is that the DC resistance to ground from the inverting and non-inverting inputs needs to be equal -- and you need to take the output of the amp, and the outputs of any pure voltage sources as "ground" for the purposes of the calculation.







simulate this circuit &ndash; Schematic created using CircuitLab