Box was opened for quality check. Product is new in box.
- Bass frequency control, phase switching, short circuit protection.
- Connected to one channel can push single coil single magnetic steel 10 inch sub woofer.
- A pair of Suit Speaker can be pushed alone.
- 10 inch single coil and double magnetic steel sub woofer can be pushed, and 10 inch passive sub woofer is recommended.
- The power amplifier is very small, you can install it under a seat.