The Marantz AV-600 is an audio/video preamplifier designed primarily for home theater and two-channel audio use. It features THX certification, ensuring that it meets certain performance standards for audio quality. Users frequently praise its excellent build quality, warm and transparent sound, and flexibility in connectivity. The unit provides multiple inputs and outputs, including 6 channel direct inputs, pre-outs for all channels, and dual subwoofer outputs. It supports ProLogic decoding, making it suitable for basic surround sound setups. While it lacks modern features like Dolby Digital or DTS, it remains a popular choice for those prioritizing stereo performance and build quality at a cost-effective price. The device is typically controlled with an RC2000 remote, which offers good functionality for different settings. The overall consensus among users is that it delivers smooth and rich sound, particularly in two-channel configurations, making it ideal for audiophiles who prefer a more traditional setup without digital decoding complexities.