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The hiss varies with volume; but, the only place I could find it on the oscilloscope was at the collector was at the driver transistor (at the transformer). I replaced the transistor and the 330K resistor; but, the hiss is still there. It's not noticeable when a record is playing; so, the hiss may be an artifact of the design of the amp.
I replaced the 89T cartridge with a Pfanstiehl P228; but, as I expected, the output was weaker and tinny sounding because the P228 only kicks out .5V Vs. 1.3V for the 89T. I was able to make things better by jumping out the 680K resistor in the input circuit. It's still not as bold as the 89T; but, it's a lot better than it was. Later, I may experiment more with the input circuit to see if I can make it even better.
I think the P228 will be better for records than an 89T.
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