Hi,
Agree with Graham, the headphones from Lidl are very good. Personally I use a pair from Lidl at my Desktop and a pair of Sennheiser (HD300) at my KB. What might help is to check your output settings to pull up the volume. Follow this steps:
Mixing console button - Master Compressor (On) - Threshold Offset 0 (Zero) - Ratio Offset 0 (Zero) - Gain Offset +6. One can save these settings with your own name.
Regards <> Piet