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Old 04-30-2020, 11:17 PM
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Join Date: Aug 2010
Location: East Bay, CA
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There are no hard and fast rules about how to achieve functionality.

Over the years, CJ has moved from more tubes in their linestages to fewer. This is consistent with their design intent of keeping circuits as simple as possible. This design paradigm has been adopted by a number of other manufaturers as well, including First Sound. These design principles are also consistent with Altschuler's TRIZ Principle of Ideality.

My CT-5 has one tube per channel, compared to my Pr17, which had two. I'm still on the same set of tubes in my CT-5 for the last nine years now.

The ET5 and ET7 have a single twin-triode tube for the entire preamp; one half of the tube for each channel.
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