The Fredenstein Bento 10D is a high performance portable module carrier for Fredenstein Series 600 modules or API-500 compatible plug-in cards. The unit can accept a maximum of 10 modules. The Bento 10D features several important upgrades compared with third party products, Universal power supply: Mains voltages range from 90V AC to 240V AC, 50 to 60 Hz. Increased output currents: +/-16V DC 1.6A and +48V DC 0.3A. LCD Display: Monitoring the power-supply status and, if certain Fredenstein modules are used, like F600A, F601A, F603A/B, F604, and the F607, all operating parameters of these modules are displayed as well. Auxiliary Audio Inputs and Outputs Built-in Audio Routing: Modules can be daisy-chained by simply flipping switches on the back panel. Compressor buss linking: Compressor modules can be linked by engaging switches on the back panel as well. Multi-Layer Backplane: Increased signal integrity and lower noise floor. Ground-lift switch: In case of ground loops, the audio ground and the protective ground can be disconnected. Please use only if absolutely necessary.