Just one question for all those OTL tube amp experts out there:
By their very nature, OTL headphone amps can put out DC at the headphone socket unless a coupling capacitor is used on the output. Unfortunately, as this tends to be quite a high value, it tends to be a bipolar electrolytic. Of course you could use a film cap, but this would be very large and expensive. On my WBA Tzar amp, for instance, the output caps are 470uF 25V Nichicon Muse electrolytics.
Would it be an idea to use a smaller paper-in-oil cap across the output cap as a bypass? If so, what should the ballpark value be?
By their very nature, OTL headphone amps can put out DC at the headphone socket unless a coupling capacitor is used on the output. Unfortunately, as this tends to be quite a high value, it tends to be a bipolar electrolytic. Of course you could use a film cap, but this would be very large and expensive. On my WBA Tzar amp, for instance, the output caps are 470uF 25V Nichicon Muse electrolytics.
Would it be an idea to use a smaller paper-in-oil cap across the output cap as a bypass? If so, what should the ballpark value be?
