Its the 502. & yeah sorry i took these with my phone. Ill put the specs up
THUNDER 502 2-CHANNEL POWER AMPLIFIER
SPECS:
HIGH POWERED TRANSFORMER
PATENTED PWM MOSFET SWITCHING POWER SUPPLY
REAL TIME COMPUTERIZED PROTECTION CIRCUIT
PATENTED CLASS A 100% DISCRETE DRIVER CIRCUIT TOPOLOGY
PATERNED PURE N-CHANNEL DESIGN
90 WATTS x 2 INTO A 4 OHM LOAD WITH LESS THAN 0.1% THD + N
180 WATTS x 2 INTO A 2 OHM LOAD WITH LESS THAN 0.1% THD + N
360 WATTS BRIDGED INTO A 4 OHM LOAD WITH LESS THAN 0.1% THD + N
125 WATTS x 2 INTO A 4 OHM LOAD
250 WATTS x 2 INTO A 2 OHM LOAD
500 WATTS BRIDGED INTO A 4 OHM LOAD
FREQUENCY RESPONSE : 20Hz- 20KHz
MAXIMUM INPUT : 8Vrms
THUNDER EQ : VARIABLE BASS BOOST (0-18DB) CENTER AT 40Hz
CROSSOVER : VARIABLE 40Hz TO 200Hz, 12db/octave STEREO HIGH PASS, 24db/octave MONO LOW PASS
DIMENSIONS : 12.6" x 9.75" x 2.1"