OLIVE
MAHOGANY
CHERRY
WALNUT
FFS C
FFS C feature is support mid-bass frequencies. Neutral sound.
FFS W
FFS W feature is support bass-sub bass frequencies. But the sound still spacious.
FFS F
FFS F feature is support upper mid-high frequencies. There is a wide sound stage. Sub bass frequencies are back side.
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Solid Rounded Walnut Protection Box
Solid Square Walnut Protection Box