Good thing the IMac

The Tango Bar comes in a neat package, making a pretty solid impression.
It consists essentially of silver plastic with a front made of metal. The look is quite appealing and fits well with the iMac.
The proportions are perfect for the 21,5er inch iMac.
Is still a discreet orange luminous knob for volume control on the right side.

The bar is operated via the USB port and requires no additional power supply. Importantly, after graduation to "System Settings - Sound - Output" to activate the Rider "USB Device".
In addition, the USB-B22-03 still has an RCA subwoofer output and a jack input, and a headphone output.

For sound:
The sound is amazingly differentiated and however to be annoying fine without. The bass response is related to the size okay. However, one should expect neither a punchy yet profound bass response.
Overall a definite sound improvement over the built-in speakers IMac.
The Speaker is ideal if you want to listen to some music while working at the computer and this in an appealing quality. However, if you want to operate the Tango Bar as stereos replacement should look for something bigger out.

For my purposes, it is perfect and an absolute recommendation.