The class A/B circuit shares its DNA with the rest of Rega’s amplifiers, and as usual, great care has been taken in component selection. Sanken output transistors and an Alps volume potentiometer and a linear power supply that enables an output of 30 watts per channel into 8 ohms.

Two line level inputs and a high quality moving magnet phono input are available as sources. There is a headphone output provided on the front of the unit for powering standard hi-fi headphones; this is driven from the power amplifier stage of the unit through relays to avoid signal degradation when headphones are inserted or the product is muted. A new remote handset is included as well.

Rega Research IO Integrated Amplifier User's Manual

Specifications

Power Outputs at 230/115 V Supply Voltage
30 W RMS both channels driven into the rated load of 8 Ω

Input 1 (Phono) Input Sensitivity 2.1 mV @ 47 kΩ in parallel with 220 pF
Maximum Input 1 (Phono) Input Level 100 mV
Input 2-3 (Line) Input Sensitivity 210 mV @ 47 kΩ
Maximum Input 2-3 (Line) Input Level 10.25 V

Headphone Output
No load 8 V
32 Ω 1.6 V
54 Ω 2.4 V
300 Ω 5.7 V

Source Impedance: 109 Ω

Power Consumption: 135 W @ 230 V / 220 V / 115 V / 100 V into the rated load of 8 Ω

Frequency Response: 
Phono: 15 Hz to 40 kHz ( -3 dB points ) / 27 Hz to 20.5 kHz ( -1 dB points )
RIAA accuracy: ( 100Hz to 10 kHz ) ±0.4 dB typically better than ±0.3 dB
Line: 12 Hz ( -1 dB points ) to 43 kHz ( -3 dB points )

Remote Control: 2 x AAA Alkaline Batteries included.

Fuse Ratings

T1.6 AL 250 V: 230 V / 50Hz and 220 V / 60 Hz
T3.15 AL 250 V: 115 V / 60 Hz and 100 V / 50/60 Hz

Weight: 6 lbs.

Dimensions ( W x D x H ): 180 x 290 x 68 mm