I've had this since 2009. It is a very nice and versatile amplifier. I use it almost every night before going to bed or sleep. I bought many accessories, the rechargeable battery and charger, plus the more expensive IC upgrade. It has a very nice stereo quality and is powerful enough to drive power hungry headphones. This portable amplifier has quenched any thirst in me for other ampfliers. I own a Phonitor, but it is for daily use. Battery runs for about 6 to 8 hours and you can recharge it while hearing music. Practical Devices Corporation has...