An unannounced Teenage Engineering device, the KO-Amp 35, can be found over at the FCC in a new filing. The label clearly marks it as a member of the mid-range EP family instruments, which currently includes the KO-II and its spinoffs, the Riddim and the Medieval. The name suggests that TE could be getting into the budget guitar and instrument amp space, but the filing reveals very little. All we know is that it has a built-in rechargeable battery and Bluetooth, but little else. There is also a "model difference statement," which suggests the KO-Amp will come in multiple colors. The angle and distance of the images in the filing make it dif … Read the full story at The Verge. ...read more read less