Para Feed Single Ended Amplifier by EL84

EL84 Para Feed Single Ended Amplifier
6BQ5  EL84 Para Feed Single Ended Amplifier DIY


this counter started 28th Mar 2021

The amplifier made in China is made very beautifully, but please think that the performance is about 1/10.
The self-made amplifier is not beautiful, but its performance is several times higher than that made in China.

It's about the amplifier. : At first it was PMF-5WS, but KA054B57T came out of the parts box,
so I will make it with this. Then switch. This transformer has a maximum of 13H and PMF-5WS has a maximum of 18H.
However, it seems that the PMF-5WS does not have so much inductance when measured by Onnyo. As for the size, the KA57 has a smaller core, and if you use a thin wire to wind it in a sandwich, I think that the performance will improve in Kasuga.
I will use a naked transformer this time, but if I have an order, I plan to use a sealed PMF-5WS-TB. Kasuga's transformer is a very small transformer.
These transformers were purchased for some reason a few years before the Corona incident.
It is a thing.

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EL84 Single Ended Amplifier DIY

para  feed   kasuga trans

Amplifier is just this one like. Transformer is PMF-5WS or KA-054B57T By Kasuga Trans


Scemetic diagram for Para Feed


PMF 5WS by General Transformer Sales Co Japan made and new product PMF-5WS-TB


3 of them are same charactor but 7189 is a little bit higer power

If would like to know more info

last up date 22nd Sep 2021
Hand Made Amplifier Located Sakura Chiba Japan

©  Mizushima Audio Laboratory Japan