MTX THUNDER 275X AMPLIFIER Made In USA USED 2 CHANNEL AMP. Thunder EQ 8" x 9" x 2" (20.3cm x 22.8cm x 5cm). Variable Bass Boost (0-18dB) centered at 40Hz. 150 Watts bridged into a 4 Ohm load with less than 0.1% Thd+N.
eBay