Reluctantly selling this amp because it just lives on a shelf these days. The 4-series Arrow is the last one before a DAC was added. It doesn't do well strapped to a phone while that phone is noisily interacting with its network. Slim and compact, this amp has always seemed like the perfect form for portability. Features: Analog adjustment of bass, treble, crosstalk, and gain. Two 3.5mm headphone jacks. A 3.5mm line input on both ends, for easy orientation. Automatically powers on and off based on whether there's a signal on the input. This is very useful for extending the battery life and has always worked flawlessly. Great battery life. Never planned on selling this amp but have relented since I'm not using it, there aren't that many Arrows out there, and getting a new one isn't always easy. Visually there aren't major blemishes, but there is a bit of chipped paint and the angled edges have signs of wear. The photos give an accurate . . . picture. $155 shipped CONUS Only the amp is included. Unfortunately I don't have an extra charging cable. It's USB-A to USB mini-B.