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In Reply to: RE: SET vs OTL in a shootout ? posted by Tre' on August 21, 2015 at 15:29:40
"The 6as7g is just not all that linear no matter how you load it."
You're right, but I think that issue all but disappears if the tubes are configured as followers. I really like the concept of transformer-coupled followers for low power applications.
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As a follower, the 6AS7 has maybe 6dB feedback, so the linearity is only a little better.
Most OTLs use substantial added feedback to get acceptable damping factors; that might have a comparable effect to the topology.
"As a follower, the 6AS7 has maybe 6dB feedback, so the linearity is only a little better."
I thought a cathode follower works on 100% local current feedback and thus has gain less than unity?
Tre'
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