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In the Forum: Audio News
In the Thread: Lamm Industries: a special interview with a special company
Post Subject: GM70 and interstage capacitorsPosted by haralanov on: 10/14/2013
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 Romy the Cat wrote:
The re-charged cap works fine but changing the cap polarity by re-recharging is while it handles the signal is not a very good idea in my view. All that dialectic in the cap needs to be re-polarized – it sound too unattractive for in idea of an ultimate power amp.

According to a friend of mine, who has a lot of experience with GM70, this tube starts to sing only with (very high quality) interstage transformer coupling. He told me that when it is used with coupling capacitor (as is the case with ML3), no matter how good the capacitor is  - the sound loses energy and tone density from the midrange down. Later, when I heard his GM70-based amplifiers - I can 100% confirm his words.

Simon GM70 stereo.JPG

Simon GM70 mono.JPG

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