AC/DC knows how to rock and they have never slowed down. Only a super hard rocking band like them could put out a Box Set like this, which has to be the best Box Set ever. AC/DC’s Backtracks package obviously looks like a guitar amp. But take a closer look.

The top of the box is actually a working 1-watt guitar amplifier. This mini-amp won’t Shake Your Foundations, or even bother the neighbors, but who cares. It’s a real amplifier. You can’t get that on iTunes people. For $199 you get three CDs and two DVDs of rare tracks from the band, a 12-inch vinyl LP, a bunch of memorabilia and a 164-page hardbound book.

These speakers may be small enough to fit on a keychain, but they pack some power. These little speakers are more than powerful enough to use when listening to your MP3s on the go. Just plug your iPod or MP3 player into the 3.5-mm audio jack.

Each version has a built in USB-rechargeable battery pack that will give you enough juice for about 2.5 hours of playback time. That’s pretty impressive for the size. They’ll cost you $25. Small speakers, big sound. What more do you want?

The HifiMAN HM-801 portable media player (PMP) is a different kind of PMP. It combines a Burr-Brown PCM1704 DAC and a OPA627 op-amp in a single modular unit that lets you use your own amplifier if you want. Supposedly sound quality isn’t compromised as it features full support for FLAC and lossless WMA.

Keep in mind that it lacks video support, media-related features and internal storage all together, so make sure you have a ton of SDHC memory cards if you want to use the retro-ly named HifiMAN HM-801.

This bot makes Sony’s Rolly look like the lame dancing egg that it is. AMP stands for Automated Music Personality, from Hasbro’s Tiger Electronics and Sega Toys, and it’s here to dance, follow you around with music and look just plain awesome.

It’s got Segway-like legs that dance to the beat of any MP3 player via a 3.5mm jack. Also sports 49 LEDs that shine nicely too, because bots have to have lights. The A.M.P. has touch-sensitive DJ scratching pads and 62 sound effects built in so you can jazz up your songs, and an IR sensor so he will follow you from room to room and keep the music with you at all times.

It seems that the guitar mania that has engulfed the geek world with games like Guitar Hero and Rockband is here to stay. So you may as well embrace it and get yourself this iPod speaker amp. You probably already have the Guitar Rocker and the catbox 360 after all. I’m sure this will make your life complete.

Just plug in your MP3 player and you are ready. It’s not just for your mp3 player either, you can also use it as a computer speaker. It has working treble and bass knobs and a 5-watt output. It can be powered from your computer via USB, or by using 3 AAA batteries.