The Aethos stereo amplifier is housed in a brand new, custom-designed case. Employing four 160 W 16 Amp output transistors per channel, this delivers 156 W per channel into 6 Ω. The Aethos is a dual-mono design using a custom wound toroidal transformer & regulated supplies for the sensitive amplification and driver stages. The pre-amplifier stage uses class-A discrete circuitry throughout. The Aethos is a no-compromise product with one goal, to deliver your music as faithfully as possible.

Design Innovation

Rega's time, effort, and money was been spent on developing the circuit and construction while utilizing the highest specification of components throughout.

As part of the Aethos, Rega included useful features such as the switchable direct input and preamplifier output, to enable it for use in a wide combination of systems. The headphone socket has been integrated such that the speaker switching is performed by the output mute relay as so not to obstruct the signal path and degrade the sound quality.

Rega has taken the design concepts underpinning the multi-award-winning and hugely successful Elex-R and Elicit-R and propelled the performance to the next level. Rega designed the Aethos with a 125watt dual-mono design and features such as a fully discrete FET-based line amplifier, polypropylene capacitors throughout the signal path.

Additionally, Aethos is fitted with K-Power reservoir capacitors, power amplifier regulated supply, and a high current output stage comprising of four 160w Sanken output transistors per channel.

Features

- 156 W per channel into 6 Ω (125 W per channel into 8 Ω)

- Dual mono design

- 5 Line inputs

- Headphone socket

- Remote control

- Direct input

- Record out

- Pre-amp out

- Lifetime warranty against manufacture defects

Rega Research Aethos Integrated Amplifier User's Manual

Specifications

Power outputs at rated 230/115 V supply voltage:

125 W RMS both channels are driven into the rated load of 8 Ω

156 W RMS both channels driven into 6 Ω

Note: Continued high-level use into 6 Ω may cause the case to exceed 40 °C above the ambient temperature and activate the thermal shutdown.

Headphone Output

No-load 12.5 V

32 Ω 2.7 V

54 Ω 4 V

300 Ω 9 V

Source Impedance 109 Ω

Record Output

Record output level (with rated input levels): 219 mV

Record output impedance: 560 Ω

Pre-amp Output

Pre-amp output level (with rated input levels): 840 mV

Pre-amp output impedance: 100 Ω

Input Sensitivities for Rated Output Level

Input 1-5 and record input sensitivity: 224 mV @ 17 kΩ

Maximum Input Level: 11.5 V (record output amplifier overload point)

Direct Input Sensitivity: 840 mV @ 50 kΩ

Power Amplifier Gain: 31.6 dB

Frequency Response: @ 100 W INTO 8 Ω

Line Input: 1-5 and record 10 Hz (-0.8 dB point) to 30 kHz (-0.5 dB point)

Direct Input: 10 Hz (-0.8 dB point) to 50 kHz (-0.5 dB point)

THD+NOISE @ 100 W INTO 8 Ω

Direct input (Power amplifier only): Typically 0.007% @ 1 kHz

(measurement bandwidth 22 Hz to 30 kHz)

Line input: Typically 0.007% @ 1 kHz (measurement bandwidth 22 Hz to 30 kHz)

Power Consumption Maximum Output: 415 W @ 230 V / 220 V / 115 V / 100 V into the rated load of 124 W RMS into 8 Ω

Fuse Rating:

T5 AL 250 V - 230 V / 50 Hz and 220 V / 60 Hz T8 AL 250 V - 115 V / 60 Hz and 100 V 50/60 Hz

Dimensions: W 433 mm x H 95