Hearing Central LLC has just announced a trio of new models of hearing aids from its Melody range. First off we have the Melody A1 that features two channels and a dozen bands, making it good to counter moderate hearing loss of up to 70dB. As for the Melody A2, you get a quartet of channels and 12 bands, making it useful for moderate to severe hearing loss of up to 80dB. Last but not least, we have the Melody A3 that comes with four channels, 12 bands and omni-directional microphones, and is also good for hearing loss of up to 80dB. All three types of hearing aids tip the scales at less than an ounce, measuring 1″ long and 3/16″ wide. Choose from beige, charcoal and silver colors. The Melody A1, A2 and A3 will retail for $495, $695 and $895, respectively.