Sonicblue, the company that now makes the groundbreaking Rio MP3 player, has introduced two new CD-playing units.

"The RioVolt SP250 is our new flagship high-end product," clucked Jonathan Sasse, product marketing manager for Rio portables. "We have added more features, more accessories, and basically polished up what the RioVolt 100 was."

Both the SP250 (pictured) and SP90 RioVolts will play standard music CDs and CDs containing MP3 and WMA (Windows Media Audio) files.

The SP250 comes with a customisable user interface with a backlit LCD screen and features an FM radio tuner with presets, two types of headphones and a 15-hour battery life. Pricing should be around £130. This top-of-the-line model is a step up from the benchmark RioVolt 100, introduced in June.

"What we added is an FM tuner that is built in to the device, which has an improved display and a user interface almost identical to the Rio 800," says Sasse. "We also added the ability to recharge batteries in the 250, which ships with NiMH (nickel-metal hydride) AA batteries."

A second new model, the SP90, is basically a stripped-down model for new users that misses out on the radio. Pricing should be £30 to £40 less.