Up for sale is the well known Pass Labs x350.5 power amplifier. This amp easily beat any other amp that has come through my living room (which have been more than 100+). It has what i'd consider is THE BEST BASS i have heard from any other amplifier (including krell amplifiers) and continues to be perhaps one of the most sweet sounding amps. If you have speakers that you feel could use more OOMPH then this amp will certainly do that trick. It really has a level of clarity and midrange that is hard to beat. Out of all the Pass Labs amplifiers that exist, this amp is THE MOST REVIEWED amplifier from their .5 line. It just has THE BEST OF BOTH WORLDS (CLASS A AND CLASS AB) and does everything right. The unit is in great shape (as seen on pictures) and comes with original box. It is one heavy amplifier so i would recommend freight shipping only which will be calculated for the buyer (please disregard the shipping charge on the listing) thanks for looking !