Earnings from a job using equipment bought with stolen money

I started a job recently, which involves me finding contacts of doctors. To do this work, i need to use a set of headphones. These headphones are ones i had bought with stolen money, of which i found a lot of contacts during the period of wearing it.

I want to avoid my income being haram, so i have bought a new pair of headphones.

However, i am in a bit of a problem. My work is target driven, i.e. i need to find a certain number of contacts. For the continuation of my job, my Manager needs to see a total of contacts i’ve achieved. On one hand, i do not want to sum/total the contacts (whilst wearing the ‘haram’ headphones and the new set) but on the other hand, this will undoubtedly influence his decision.

My question is, would this count as benefitting from stolen earnings if i total it? What should I do ?