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Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

My Apt Holman preamp of years ago had an interesting circuit

By twisting the dial you could either combine Left and Right to reduce channel separation, (which they suggested for headphone listening); OR it could suppress "center", i.e. L+R combined signal to emphasis the two channels separately, (like say for Karaoke).

The control was continuous from one extreme to the other. See the third knob from the right, 'Mode Stereo'.





Dmitri Shostakovich


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  • My Apt Holman preamp of years ago had an interesting circuit - Feanor 12:56:24 02/23/24 (0)

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