In Jain dharma, the key point is what happens to your mind.

If techno music helps you stay calm and attentive, it is not automatically paap. But if it causes restlessness, attachment, distraction, or indulgence in sensory pleasure, then it can support asrava and be spiritually unhelpful.

From a Jain view:

• Study with a calm, disciplined mind is best
• Too much sound or entertainment can increase vikruti in the mind
• If music is used only as a tool and you remain steady, संयमित, and aware, the karmic impact is less
• If it becomes a habit of attachment or dependence, it is not favorable for spiritual progress

So, listening to techno music while reading is not inherently paap, but it is not the ideal Jain practice for concentration. A quieter, more शांत वातावरण is generally better for swadhyay and right attention.

In short: it is not necessarily paap, but it may be spiritually less beneficial if it increases attachment or distraction.