Auris - PHONIO Light – Phono Stage
Auris Phonio Light is a high-fidelity phono preamplifier that has separate MM and MC inputs, selected by using switches on the front of the device. It has one output - RCA.
The device comes with a 16V AC adapter that is small enough not to get in the way, and at the same time it can be moved away from the device, which avoids interference and enables the power supply circuit to reduce noise as much as possible.
In the Phonio Light, Auris uses Sound Plus operational amplifiers connected in an advanced topology that brings precise RIAA equalization and retention of all good sounds in the audible frequency range, while suppressing hums and bad harmonics that create an unpleasant feeling during listening.
Inside the device, Auris has capacitors whose capacitance exceeds 5000uF for better filtration, but that's not all, because to get an ultra-low sum, Auris also uses an LDO in combination with a BJT to get a power supply topology with a large PSRR (power supply rejection ratio). Features
- Crystal Clear Sound with Minimal Interference: Next-generation phono stage designed for a wide range of MM and MC cartridges with exceptional filtering and low noise levels
- Adjustable MC Gain: The three-level MC gain adjustment significantly expands the choice of MC cartridges
- Resistance & Capacitance Optimization: Allows for optimization, which is crucial for achieving optimal sound quality
- Separate RCA Inputs: For MM and MC, enabling simultaneous connection of two tonearms or two turntables
- Low-Noise Operational Amplifiers: Ensures high sound quality with minimal distortion
- Robust Aluminum Housing: Prevents the transmission of vibrations
Specifications
MM
MC
Max input level
at 1kHz
60mV
4mV/ Low gain
Max output
5V
5V
Gain
43.2dB
Low 58dB, Mid 64dB, High 67dB
SNR un-weighted
>88dB
>70.5dB low gain at 1V Bandwidth
THD N
0.0035% at 1V
0.023% at 1V Bandwidth 100Hz-22Hz (-9dB low-gain)
THD
0.0003%
0.002%
Freq. Response
20Hz-80kHz
±0.3dB
±0.3dB
RIAA accuracy
±0.3dB
±0.3dB
Input sensitivity
725mV 5mV input
0dB High gain : 0.5mV for 1.15V output
-3dB Mid gain : 0.5mV for 0.75V output
-9dB Low gain : 0.5mV for 0.4V output
Loading Settings
Left/Right MC Loading Resistance
1 and 2 off =400 Ω
1 only on = 150 Ω
2 only on = 100 Ω
1 & 2 on =70 Ω
Capacitance
3 and 4 off =1000 pF
3 only on = 2000 pF
4 only on = 3200 pF
3 & 4 on = 4200 pF
Left/Right MC Gain
2 only on - low gain = 58 dB
1 only on - middle gain = 64 dB
1 & 2 on - high gain = 67 dB
Left/Right MM
Gain = 43.2dB
MM input loading 47kΩ in parallel with 150pF