Just to Share this class T amp from Tripath TA2024 15W/channel, for general low power applications amplifier for your use. It measure 52cm by 62cm, I find its use when I am in need of a center and surround amplifier for my 5.1 AV project. Personally, the high frequency is good enough when used in full range apps. I do not think I can consume the 15W/channel for the center and surround, perhaps I just need less than 5W of it - its not how big the sound to makes me satisfy, its the sound coming from different speakers, front-center-rear - making to use low power amp.
It's not our design, just seen it in the live market, and it cost around 370 php (around means, depending on RMB to PHP conversion). I plan to order few for my Field Trial on the DTS/Dolby decoder, in case you like this amp, you may add up to my order.
With +12V power supply, it match with most Tone control and equalizer or other audio processing, it also match for my DTS/Dolby decoder which even I do not use external Low pass filer to filter most digital spurious on the decoder IC, it works so far (in the hobby level, not ever tried EMC on the lab). One thing I notice is that, with shared dc power supply, less problem on hum noise even 4 of this amp are cascaded. One problem is that, the IC is SOP Power Pack - a SMD , its hard to diy control the "sleep" by connecting a wire from MCU directly from the IC pin.