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Old 24th November 2003, 07:22 PM   #1
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Default Selection of 2SK170 transistors

I am going to build a low noise (hopefully) amplifier for a MC preamplifier. It will use 2 2sk170 transistors.
I have both the 2SK170GR and 2SK170BL in my box. The bias should run 3 - 5 ma or so. Is there a performance advantage to using the lower current spec'd GR series?
My phono uses the BL series, but they operate closer to the range of the GR.

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Old 24th November 2003, 10:17 PM   #2
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Join Date: Feb 2003
Location: Noord-Holland

no, i see no advantage in the lower current GR.
And yes, it will be low noise.
I have built a MC amp with them ( don't remember wich type K170 I used ) cascaded into the cathode of a E88CC just like Allen Wright does.
I can only say that it's the most quiet and musical MC amp I ever built.

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