The Vengeance Essential Clubsounds (VEC) series, produced by Manuel Schleis and Manuel Reuter, is one of the most influential sample pack collections in electronic dance music history. Released over several years starting in the mid-2000s, these packs provided the foundational "club-ready" sounds for genres like House, Electro, Trance, and Hands Up. Volume Overview (VEC 1–4)

You can find and download these specific volumes through the Lyberry-Vengeance Archive Internet Archive

Review: Vengeance Essential Clubsounds Vol.1-2-3-4 (WAV)
The Definitive Electronic Music Starter Pack

However, downloading such files is risky:

Cons: