This is a state of being, in consciousness, is similar to your most natural state of existence, which means it’s a refection on your Eternal state of being. This state of being can be considered as the waiting room before Self-realization. Your ability to spend some time here will be determined by your dedication, mind strength, and surrendering powers. Mind strength is your ability to keep the mind in silent repose, and surrendering the world and all your predispositions is a huge part of staying that way. To arrive in the Samadhi state takes a high level of surrendering, sincere earnestness, and a lot of practice, because the “Witnessing state” with eyes closed is difficult, but a necessary stage.
The characteristics of the Samadhi state are beyond meditation techniques, because most techniques are designed to get you to the Witness state. However, taking the next step in, the Witness and all the mind decoy techniques have to be abandoned before entering. There’s a sort of a transition zone where the decoys die out (mantras, etc.), and your perceiving (Witnessing) nothing but consciousness, life force, or internal energy. This zone is more or less another waiting area, or stage before you slip into Samadhi, which is the merging or union of the perceiver and the perceived. Altogether, I see four levels or stages of spiritual progression: The Doer state, the Witness state (Active and Inactive), the Samadhi state, and the Eternal state.
Surrendering all concepts that are related to appearances, and ideas of a separate God are part of the transitioning into this divine state. Letting go, releasing your grip, or looking away from all personal and conditioned responses of the mind, for one thoughtless and primordial state of being in consciousness. When sitting and waiting in the transition zone of formless meditating witnessing the life force it produces an unnoticeable and feelingless merging between different states, and before you know it your in Samadhi. An entrainment occurs when consciousness falls in sync with Awareness and they sit as one in the Samadhi state, without movement or reason. This thoughtless state of being is characterized as a lost of perceiving of anything external or internal, nothing outside or inside of you is perceivable, or preventing you from just being like this. The Samadhi state is the supreme state of surrendering, and your ability to stay like this for extended periods, determines your ability to surrender and go with it, which is releasing limited identity for the Eternal One. Eventually your fortitude and determination at acquiring this state of being when meditating will release you from your imaginary bondage, once liberated from death and desire, contentment will reign supreme.
This Samadhi state, which is the closest representation of your Eternal state of being while embodied will be last step you can take before Self-realization, and the ultimate step will be beyond all. To go beyond, I believe another entrainment happens in the Samadhi state between Eternity (God) and your Awareness, that overpowers the curtain of consciousness (energy), which is like a film or covering over Awareness, which in turn keeps it captive. It’s almost like you’re spreading out consciousness thinly until a tear in the fabric takes off and exposes the Eternal realm, our real Home.