After the successful DSO Nano Seeed is finishing development of new pocket scope called DSO Quad. Engineering samples started shipping in late December 2010, now the beta testing run is available for preorders at $159. Be aware that the actual shipping is scheduled for March. DSO Quad has two analog inputs up to 36 Msps, two digital inputs and one signal generator output. Waveforms and screens can be saved to 2 MB onboard flash accessible over USB. Display resolution is 400×240 px. Firmware will be open source with support for user applications.