Sony STR-DB930 5.1 Channel 550 Watt Receiver

The Sony STR-DB930, released around 1999, is a legendary piece of the QS (Quality Standard) line. It is highly regarded by enthusiasts for its massive power transformer and its ability to bridge the gap between high-end "ES" performance and consumer affordability.

1. Audio Performance & Power

• Amplification: 110 Watts per channel (8\Omega, 20 Hz – 20 kHz, 0.09\ THD) in stereo mode.

• Surround Output: 110 Watts times 5 channels.

• Discrete 5.1-Channel Inputs: Essential for connecting high-resolution sources like your Sony SCD-CE595 to hear multi-channel SACD audio.

• DSP Processing: Features the 32-Bit Digital Cinema Sound processing, which Sony developed using acoustic measurements from their actual Hollywood scoring stages.

2. Connectivity (I/O)

This receiver is a connectivity powerhouse for a vintage-focused setup:

• Digital Inputs: 3 Optical and 1 Coaxial input.

• Digital Output: 1 Optical output (useful for recording to MD or a digital recorder).

• Analog Inputs: Phono, CD, Tape, MD, and several Video inputs (LD, TV, DVD, VCR 1/2).

• Pre-Outs: Full 5.1-channel pre-amplifier outputs, allowing you to use it as a processor with more powerful external amplifiers.

• Video Switching: S-Video and Composite switching for all video sources.

3. Build Quality & Features

• Aluminum Front Panel: Features a "flip-down" door that hides the less-used buttons, maintaining a clean, premium aesthetic.

• "User Name" Feature: You can manually name each input (e.g., "VAIO PC" or "HANDYCAM") to appear on the fluorescent display.

• Impedance Selector: A switch on the back allows you to toggle between $4\Omega$ and $8\Omega$, ensuring compatibility with a wide range of speakers.

Technical Specifications