Bought it off ebay a few months ago and never got to use it except for a week so it's in new condition...they sell for $135 new on ebay so I'll let it go for $70 plus shipping...Pm me or Jsnscot@aol.com thanks guys...I'm moving in 2 weeks and need to get rid of some things
THUNDER421D MONO BLOCK POWER AMPLIFIER

* HIGH POWERED TRANSFORMER
* PATENTED PWM MOSFET SWITCHING POWER SUPPLY
* REAL TIME COMPUTERIZED PROTECTION CIRCUIT
* PATENTED CLASS D TECHNOLOGY
* STRONG POWER INDUCTOR OUTPUT FILTER
* SMART-ENGAGE
* PATERNED PURE N-CHANNEL DESIGN
* @ 14.4 VOLTS DC
* 210 WATTS x 1 INTO A 4 OHM
* 420 WATTS x 1 INTO A 2 OHM
* 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 : 11.5" x 9.75" x 2.1"