The Pioneer CS-400A is a vintage stereo speaker system manufactured by Pioneer Corporation. It was released in the 1970s and is a 2-way speaker with a wood cabinet. It features a 12-inch woofer and a horn tweeter for clear sound reproduction. The CS-400A is known for its solid build quality and warm sound characteristic.

The Pioneer CS-400A is a vintage stereo speaker system manufactured by Pioneer Corporation. It was released in the 1970s and is a 2-way speaker with a wood cabinet. It features a 12-inch woofer and a horn tweeter for clear sound reproduction. The CS-400A is known for its solid build quality and warm sound characteristic.