Letting go my all time favorite portable amp ALO MK3B+ fully balanced and single ended with bass boost. This is the only portable amp that gives me the most musical and oomph and body that most DAP is really lacking. This powerful amp will drive any headphones out there including Planar and HD 600 and above with finesse. The unit is in excellent condition and it comes with original box, wall charger and a couple rubber bands plus manual. However, this amp is not suitable for IEM due to higher than average noise floor but for headphones no problem. Shipping to US Cont is 10 with priority mail when payment is completed via PayPal.