The Ascent Series by Vitamix combines sleek design with modern convenience, offering blenders with built-in timers and multiple options for user control. The Vitamix A2300 offers the convenience of a built-in Digital Timer and a Variable Speed control dial. You'll be able to create sauces, soups, and smoothies any way you like them. You're in control. Self-Detect containers allow you to build a customized blending system that fits your needs (available in 20 ounce and 8 ounce sizes.) Containers from the G-series, C-series and S-series are not compatible with the Ascent Series machines.