Can I use any of your transformers for converting consumer level -10dB unbalanced signals to professional +4dB balanced signals?

In order to lift signal level from -10 to +4 you need a stepup transformer with turns ratio 1:5, such as LL1935 used 1:5 The consumer equipment output impedance should be reasonable low, and pro audio input impedance must be high, as the transformed output impedance will be 25 times higher than the original source impedance. The transformer should be placed close to the balanced input. If the source impedance is much higher than 600 ohms, the band width will be limited.