Brainwavz Portable Headphone Amplifier $17 at Amazon $17 $40 Amazon with MP4NATION has the Brainwavz AP001 Portable Headphone Amplifier for $27 - $10 off with coupon code 9EDKUG6N at checkout = $17 with free shipping on orders $35+. Goes for $26+ around the web.Has a built-in 120mAh rechargeable battery and provides up to 12 hours of continuous usage. $17 retail: $40 Report Posted by Kamzen08/14/2015 at 12:01 PM PT
Comments & Reviews (3)
http://www.head-fi.org/products/brainwavz-ap001-portable-headphone-amplifier
There are a ton of affordably priced alternatives today, even boutique tube headamps can be found under $100 now but they're not so portable:
http://www.amazon.com/Bravo-Audio-V2-Multi-Hybrid-Headphone/dp/B00ADR2DTG
FiiO E6 was generally considered better but that is comparing both at the same price while it's now $28:
http://www.amazon.com/FiiO-E6-Portable-Headphone-Amplifier/dp/B005HJWWW8
Thank you!