The speakers in tablets and smartphones leave something to be desired. They're just too small to put out full-bodied audio – especially if it's to be shared. A speaker dock can offer a wonderful sound improvement and a power-up, too. Here are three options to fit a wide variety of devices. The JBL OnBeat Mini is a speaker dock with a Lighting connector designed for Apple's latest line-up of iOS devices. The acoustically sophisticated JBL OnBeat Mini is small in size, so it's a portable charging dock to take anywhere. The speaker system includes two full-range transducers and built-in digital signal processing. It enables up to five hours of playback when used with batteries and charges iOS devices when used with the AC adapter. The portable speaker also includes a built-in USB connector to power and play other portable devices. It retails for about $100. For the iPad exclusively, Belkin is offering the Thunderstorm Handheld Home Theater. Powered by mobile sound leader Audifi, the Thunderstorm Handheld Home Theater features high-efficiency, front-facing speakers that project cinematic-quality sound. Ported speakers and integrated air channels in the design allow optimal airflow, so bass frequencies come alive. Designed to fit flush around an iPad, the Belkin Thunderstorm Handheld Home Theater connects directly through the iPad dock connector. It also features a multifold cover for a variety of comfortable viewing angles and screen protection. This speaker dock is available for both 30-pin connectors and the new Lightning connector. It sells for $200. Last today, take a look at the TDK Life on Record Wireless Charging Speaker. This audio system was developed to provide cable-free charging and high-quality wireless audio streaming and sound. A Qi inductive charging pad is incorporated into the top of the speaker, which is configured with four full range left and right speakers and a ported subwoofer. With its built-in Bluetooth v2.1 technology with AAC, this speaker system also provides high quality near lossless audio streaming without a wired connection. This frees a device to be used whenever needed, not tied down and plugged in. Its rechargeable battery provides up to six hours of portable audio. The system is priced at $250.