I would think it's poor from the first moment. The input impedance of the first stage is 10k, so, with the 22k resistors, you start with 10dB signal loss. In fact considering the source impedance of an electric guitar, the attenuation may be more like 20dB. The rather high collector current (about 1mA) suggests a rather high NF (about 12-15dB).hitchhiker said:The signal to noise is poor so my guess the transistors are off or it was always bad.
2N5088 a tad better than 2N3391, but still 10+dB noise factor with 1mA collector current and Rs=100k. Shorted input noise may be better than with 100uA. Anyway, 1mA needed to allow driving 10k pot and Baxendall.CJ said:2N5088 for input amp mentioned over at Enzo's place
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