McLelland Bluetooth Amp
This is a neat, attractive unit small enough (145 x 95 x 45) to sit in a bookshelf and power a pair of small speakers. It comes with a remote which has a good range of controls: mute, source selection, volume, treble and bass settings, and LR balance. The unit has 3 inputs: RCA stereo, 3.5 stereo and Bluetooth.
The Bluetooth might be problematic for users. It works with my iPhone 6S but with the iPad Air 2, there's an annoying reconnect chime every 18 seconds which I haven't been able to troubleshoot. So, if you're going to use this amp with bluetooth, make sure it works with your device before you purchase it.