Rega Osiris Reference Integrated Amplifier
Best flagship integrated amplifier for audiophiles seeking uncompromising sonic purity.
The Rega Osiris is a flagship integrated amplifier, representing the zenith of solid-state engineering. It delivers an uncompromising audio experience with its dual-mono construction and minimalist circuit design, providing exceptional clarity and power. Housed in a robust, custom-machined aluminum chassis, the Osiris is built for durability and seamless integration with other Rega reference components. This amplifier is engineered for ultimate sonic purity, offering uncolored performance and exceptional authority, control, and realism for a truly engaging listening experience.
$11295.00
Owner Satisfaction
4.8
/ 5
Category Rank
37
/ 1719
#37 in Power Amplifiers
Price vs Category Average
+37%
Above average
Power Output
1628
/ W per channel into Ω
Who it's for
- Listeners prioritizing long-term reliability and premium construction
- Music lovers seeking rhythmic precision and transparent sound
- Audiophiles driving power-hungry, low-impedance speaker systems
Who should skip it
- Budget-conscious buyers seeking entry-level or mid-range value
- Users requiring modern digital connectivity or headphone support
- Owners with limited rack space or poor ventilation setups
Performance breakdown
Sonic Transparency
Minimalist circuitry delivers an uncolored, lifelike reproduction of every recording.
Drive Capability
Eight high-output transistors effortlessly command even the most demanding speaker loads.
Build Integrity
Custom CNC-machined aluminum chassis provides exceptional rigidity and vibration resistance.
Channel Separation
Dual-mono architecture ensures a wide, precise soundstage with zero crosstalk.
Power Stability
Symmetrical power supply maintains consistent voltage during intense musical peaks.
Operational Simplicity
Pure analog design prioritizes signal purity over complex, unnecessary digital features.
Key Specs
Power Output
162 W per channel into 8 Ω
Power Output
250 W per channel into 4 Ω
Input Sensitivity
160 W into 8 Ω
Gain
44 dB
Record Output
215 mV into 100 kΩ
Frequency Response
10 Hz (-1.7 dB point)
Total Harmonic Distortion
< 0.05%
Power Consumption
560 W
Features
- Dual mono design for superior channel separation.
- Passive pre-amplifier circuit for signal purity.
- Custom CNC machined aluminum case.
- Eight 200W output transistors drive difficult loads.
- Low noise toroidal transformers minimize noise transfer.
- High-capacity smoothing capacitors for ample current.
- Regulated symmetrical power supply for stable voltage.
- Reference CNC remote handset included.
What customers say
Owners consistently describe the Rega Osiris as a reference component delivering exceptional performance. The core praise centers on its sonic transparency and musicality, providing deep, textured bass and an expansive soundstage without added coloration. Customers are impressed by its authoritative power, noting its effortless ability to control demanding loudspeakers. Beyond sound, the build quality receives universal acclaim; the unit feels robust and built for longevity, justifying its premium positioning. While costly, the consensus is that the Osiris offers sonic refinement and reliability few integrated amplifiers can match, cementing its status as a benchmark product.
Know before you buy
The dual-mono construction means that the left and right channels are essentially treated as two separate amplifiers within one chassis. This design significantly improves channel separation, resulting in a wider, more precise soundstage and reduced crosstalk between channels.
Yes. With eight 200W output transistors and high-capacity smoothing capacitors, the Osiris is specifically engineered to maintain control and authority even when paired with demanding, low-impedance speaker loads.
No, the Osiris is a pure analog integrated amplifier. It does not feature an internal digital-to-analog converter or a phono stage, allowing you to pair it with your preferred external components for a customized signal chain.
The passive pre-amplifier circuit is designed to minimize the number of components in the signal path. By reducing the complexity of the circuit, it helps preserve the purity of the audio signal, leading to greater transparency and less coloration.
While the Osiris is built to a standard width of 434mm, it is quite heavy at 25.6 kg and is not rack-mountable. You should ensure your furniture is sturdy enough to support its weight and that there is adequate ventilation space around the unit.
The amplifier provides both balanced XLR and standard RCA inputs to accommodate a variety of high-end source components. It uses high-quality binding posts for secure and reliable speaker cable connections.
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$11295