The second chassis is often mistaken for a power amplifier due to its heft. It contains a 300VA toroidal transformer, but the magic lies in the regulation. The Opus 2010 Mega features twelve independent voltage regulation stages. Every single active component on the gain board has its own dedicated, isolated power supply rail. This eliminates crosstalk and intermodulation distortion to a degree that was, in 2010, considered impossible outside of laboratory measurement equipment. The "Mega" Difference: The Phono Stage The standard Opus 2010 offered a phono module as an option. The Opus 2010 Mega , however, integrates a reference phono stage that rivals standalone units priced at $50,000.
Best for: Vinyl enthusiasts, high-gain system owners, collectors. Avoid if: You listen primarily to MP3s, have a small listening room, or prefer "warm" tube coloration. Opus 2010 Mega
The main unit houses the fully discrete, dual-mono amplification stage. There are no integrated circuits (op-amps) in the signal path. Instead, Siltech employed surface-mount discrete transistor arrays, hand-matched to a tolerance of 0.1%. The volume control is a proprietary switched-resistor ladder network—a "stepped attenuator" with 128 steps, controlled via a magnetic rotary encoder. This avoids the degradation of sound associated with carbon potentiometers. The second chassis is often mistaken for a