Teac has twice as much juice for the same price as the PowerWave. Mo' betta fo shoo.
30 watts is getting into adequate power country, and it will output 30 watts in the blink of an eye: Tripath amps have the rise time of lightning, and exhibit fantastic speaker control. The Teac has no unnecessary, ancillary type circuitry, is therefore far less noisy, and the implementation is simple, clever, well executed, and, they look very nice in their brushed silver Aluminum livery. My advice: drink two bottles of wine and they will look like Rowland monoblocks, sitting pretty behind the speakers
There is tons of room to add stuff inside, a tube DAC with a volume control comes to mind, and two of them = one component width.
If you have a tube pre amp and the ability to bi amp then the TEAC is a great choice, as long as you have speakers +91db.