Memory Playback
Whether the player explicitly reads disc audio into memory and plays it from that buffer.
Memory playback describes the audio-playback path. It is separate from storing a track programme, copying discs into a permanent library and ordinary anti-skip protection or drive read-ahead.
Memory Playback — SACD Transport
For an SACD Transport, memory playback describes a stated buffered audio path for supported disc playback. The manufacturer must identify whether it applies to SACD, CD or particular operating modes.
Read the described playback function rather than inferring it from generic RAM, skip protection or a playlist feature. A disc copied into permanent storage is a different arrangement, and a buffer in an unrelated input path is not sufficient evidence.
Compare the supported modes and any effect on disc loading or operation. Memory playback does not establish external DSD output, retain a permanent copy of the disc or guarantee an audible advantage; those are separate questions.
Memory Playback — CD Transport
For a CD Transport, memory playback means the manufacturer describes music being read into a buffer before it is delivered for playback. Disc reading and delivery can then occur as separate parts of the design.
Check the actual function rather than assuming every buffer qualifies. A portable player’s anti-shock feature, track-programme memory or CD-ripping facility does not establish this specific playback arrangement. Missing information should remain unknown.
Compare the implementation and operating behaviour, including any stated loading delay. Memory playback does not imply that the entire disc remains stored after power-off or that a library is created. The feature alone does not guarantee better sound than direct disc playback.