Brand: Onkyo
The Onkyo Integra RDA-7 is a high-performance surround sound processor and amplifier that is part of the Integra R series. It comes in seven varieties, identified by numbers from 1 to 7, each with slightly different features and specifications. Here's a brief summary of the differences:1. RDA-7: This is the base model, which supports Dolby Atmos™ and DTS:X™ for immersive surround sound. It has 9 discrete amplifier channels with 205 watts per channel (8 ohms, 20 Hz-20 kHz, THD: 0.05%, 2 channels driven).2. RDA-70: The RDA-70 adds THX Select Plus certification and supports IMAX Enhanced content.3. RDA-71: This model has Amazon Multi-Room Music built-in and supports Google Assistant voice control.4. RDA-72: The RDA-72 adds support for DTS Play-Fi, which allows you to stream audio from compatible networking devices like smartphones, tablets, and computers.5. RDA-73: Like the RDA-72, this model includes DTS Play-Fi compatibility, but also features Scene Plus technology for detailed music reproduction and supports incognito audio modes for optimized audio processing of websites and video streaming services.6. RDA-74: This model includes both DTS Play-Fi and a built-in music server. It features 2TB of storage and can playback WAV, FLAC, and ALAC files up to 24-bit/192kHz.7. RDA-75: Like the RDA-74, the RDA-75 includes both DTS Play-Fi and a music server, as well as support for in-file DSP adjustment and Myiroom applications.All of the Onkyo Integra RDA-7 models are designed for high-end home theater systems and offer advanced features for optimal audio and video performance. The specific model chosen will depend on the user's preference for particular technologies or features.