Integrated amplifiers — Rega OSIRIS

The OSIRIS is a powerful integrated amplifier from Rega, a well-established British manufacturer known for accomplished, purist analogue and amplification engineering, built with a substantial gain and considerable mass. The OSIRIS represents Rega's most ambitious current statement in integrated amplifier engineering.

Key specs that matter

One balanced XLR input and four single-ended inputs are provided. Input sensitivity is 250mV. Output power is 162W into 8 ohms, or 160W into 4 ohms - a distinctive near-flat power curve suggesting a current-source-style output stage rather than conventional voltage-source topology. Gain is a substantial 44dBu. Total harmonic distortion plus noise is under 0.05%. At 434 x 122 x 350mm and 25.6kg, the OSIRIS represents a substantial integrated amplifier commitment reflecting Rega's most storied engineering heritage.

Sound and use context

Expect the accurate, purist character Rega's broader storied British catalogue is celebrated for, with the distinctive near-flat power curve across 8 and 4 ohm loads suggesting exceptional consistency across varying loudspeaker impedances.

Pairing

Rega's own Planar-series turntables offer natural, brand-coherent pairings within the same broader catalogue.

Alternatives

Other manufacturers' comparable flagship-tier integrated amplifiers offer alternatives for buyers wanting to compare topologies at a similar price point.