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In the Forum: Analog Playback
In the Thread: EMIA Phonostage.
Post Subject: EMIA Phonostage.Posted by Romy the Cat on: 4/9/2013

Here is some kind of MM phonostage with around 45dB gain.  Two stages direct coupled with input pentode and output capacitor.

It looks like output impedance is a bit too high – 2k. I like hat official blurb: … of course no feedback. They however forget to tell that pentode operation by default implies feedback but let do not think about it. 

Generally, of cause this phonostage need a step up transformer. I however was not so lucky to be able to use step up transformer with pentode input. I have no idea why but I feel that if you use high gain input stages than go for 3 fully active stages and get your 70dB of gain with no transformers. If you already get your 20-30dB input gain by magnetic then there is no need to go with input pentodes.

The Cat

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