Increasing the gain of Pleiades 2 K117 microphone preamplifier part 2

At your risk. A tiny output transformer had been used on part 1. A much larger Belclere output transformer was tried, somehow more clear sound. Then a 220K potentiometer was connected between stage 1 and 2. It works great, very low noise, gain of preamplifier can now be adjusted. So it is certainly possible with just one input transformer, 2 JFets, one output transformer, no negative feedback, to go from dynamic microphone level to line level, feeding Sennheiser HD580 headphones for example. Battery supply is an ordinary 9V battery which should last long time.