Vintage 1959 Mullard EL-34 With UTC LS-57 Output Transformers In Stereo Williamson Amplifier
Please note that on multiple occasions I said, "Acrosound" transformers when I meant "UTC" transformers. This amplifier and video is about the UTC LS-57 output transformers in a Williamson design. A beautiful sounding 20 watt per channel stereo utilizing vintage UTC output transformers. Each LS-57 has a primary inductance of 20H and there is 16 dB of global NFB in the Williamson design. Maximum power per channel is 20 watts before clipping.
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