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RE: 38H OPT for 845, so so?




This is a SE transformer 3500 Ohm tested with a EL34 in triode mode. Kathode bias and the low frequencie is a bit limited by the electrolitic capacitor.

Would be nice to have a 10dB NF and see what happens, 3Hz -300kHz must be possible for SE. With a 300B even slighty better.



Edits: 04/11/21 04/11/21

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