These 4-channel digital oscilloscopes now offer the flexibility of a future upgrade to a mixed signal oscilloscope (16 digital channels) simply by ordering the MSO1000Z upgrade kit. Available in 70MHz and 100MHz versions, with or without a built-in 2 channel function / arbitrary waveform generator, these affordable oscilloscopes are compact, easy-to-use and packed with useful features. Rigol DS1000Z scopes now feature an MSO slot on the front panel. Designated the “Z-Plus”, the DS1074-Plus (70MHz), the DS1074-S-Plus (70MHz w 25MHz signal generator), the DS1104-Plus (100MHz), the DS1104-S-Plus (100MHz w 25MHz signal generator) are available now. The 50MHz DS1054Z remains unchanged and does not have the front-panel MSO capability.