Rega Osiris

The Osiris is the culmination of 32 years of experience in developing solid-state amplifiers. An uncompromising, super high-performance dual mono amplifier delivering 162 W into 8 Ω (250 W into 4 Ω), housed in a custom Rega CNC-machined aluminum case. Designed around a “minimalist” high-gain power amplifier and a “passive preamplifier” circuit topology, passive volume control, and a single power amplification stage between the input and speakers, the Osiris delivers unrivaled performance and build quality. The Osiris is designed as the ideal partner for the rest of the reference range, such as the Isis CDP phono stage, Valve Isis CDP, and Aura MC.

Technical Specifications

Audio Performance

• Output Power:
  • 162 W at 8 Ω
  • 250 W at 4 Ω
• Sensitivity:
  • Input 1: 250 mV, impedance 10 kΩ (balanced)
  • Inputs 2-5 and recording: 220 mV, impedance 22 kΩ
  • Direct input: 220 mV, impedance 50 kΩ
• Gain: Direct input: 44 dB
• Frequency response: 10 Hz (point at -1.7 dB)
• Total harmonic distortion and noise: < 0.05% (bandwidth 22 Hz to 30 kHz)

Connectivity

• 1 balanced XLR input
• 4 RCA line inputs
• 1 recording input/output
• 1 direct input

Physical Characteristics

• Type: Dual mono amplifier
• Dimensions (W × H × D): 434 × 122 × 350 mm
• Weight: 25.6 kg

Other Specifications

• Remote control: Philips RC5
• Mains fuse for 230 V version: 3.15 A
• Supplied with a high-quality, fully shielded power cord designed by Rega