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Old 30th November 2010, 04:22 AM   #1
diyAudio Member
Join Date: Nov 2010
Location: China
Default The echo effect of a headphone AMP

I helped my friend to build a headphone Amp. The circuit is the EF86(Triode connection) + 6080 per channel. The interesting thing is that the sound has an echo effect in high frequency. Not too bad but unpredictable.

Is there anyone could tell me the reason? Thank you!
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