The practice of Samadhi is only possible when meditation is perfected. Samadhi has several levels:

Savikalpa Samadhi 

• You gain knowledge of physical objects.
• You have an understanding the abstract nature of things.
• You move beyond objects until you are only aware of bliss.
• Only the I-ness remains.

Nirvikalpa Samadhi

• You become one with the Soul—no mind—only infinite peace and bliss.
• The heart feels bigger than the universe.

Sahaja Samadhi 

• The constant experience of Nirvikalpa along with daily activity.

Dharma Megha Samadhi 

• The highest Samadhi, the state of Unclouded Truth (Cloud of Virtue)—“All beautiful qualities are there.”
• All desires, even the desire to know God, have dissolved.
• All that affects the mind, the causes of suffering, and the bondage of action disappear.