There is nothing inherent in an LLC that prevents having investors.
The key is the operating agreement which is the document that defines how things "work" in an LLC and would define the rights, responsibilities and authority of the members.
Generally, an LLC operates under partnership tax law - which means that the operating results (profit/loss) is passed -thru to the members (owners).
However, the LLC structure provides flexability in determining how this is done. Again, the Operating Agreement is the key.
If you want to discuss your specific situation (in confidence) you can send me a PM or contact me directly.
Business Growth Masters, LLC -
Capital Catalysts for Entrepreneurs
Home of the Scalable Business Plan
and QuikStart Capital Programs