For sale vintage Lomo microphone input transformers. This transformers were a part of tube preamp modules. I used this transformers with Lomo germanium mic preamps. The result was outstanding. Especially with vintage ribbon microphones like Oktava ML-17, ML-15, ML-19. The bottom was huge and there were a lot of air. Many vintage microphones have high output impedance 250-300 ohm and in this case to achieve best performance it require transformer with high input impedance, 4-6 Kohm... or even more. Transformation ratio 1:7.5Input impedance: 5 K ohmOutput: 150 K ohm Measured at 25Hz @ 1 voltFreq response 20Hz - 50Khz Max input signal 3 voltSale as is with no return. Price for one pair.Delivery time usually 7-10 working days. Tracking number provided.