Hartke B-Series 15 Watt Bass Combo Amp 1x6" Paper driver, Power: 15 watts, 3-band EQ Effects Send and Return, Headphone output for quiet practice Steel grill and rugged construction for enhanced durability Signal-To-Noise: 67 dB, Dynamic Range: 80 dB Dimensions: 13.5" (H) x 15" (W) x 8.7" (D), Weight: 23.2 lb.