Traynor 500 Watt - 4 ohm Micro Head Delivering a full 500 Watts at 4 ohms, the ultra compact and lightweight Traynor SB500H is the ideal professional bass head for the musician on the move. Loaded with essential features including Active and Passive level instrument inputs XLR DI output, a versatile four band EQ with an additional low frequency expander, the SB500H allows virtually any tone to be dialed in quickly and easily.