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Amplifiers & DAC

Rx Nickel

  • Optimised for IEMs
  • Dynamic 15 volt amp design
  • Super low output impedance
  • Broad frequency range
  • Super low distortion
  • Rechargeable via USB
 

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Retail Price: S$539.00

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Product Details

Technical Features

The RX has been designed to optimised for IEMs. It employs a wide band integrated amplifier and push pull power supply. Improved power filtering provides an extremely quiet supply and ultra low noise floor. This means you will hear the music and nothing else. Featuring a dynamic 15 volt amp design, the new RX offers plenty of headroom for the loudest passages to be reproduced wide open and without distortion. The highly filtered power supply keeps quietest, most subtle passages crystal clear and free of distortion or encumbrances. The RX's quiet power supply uses the newest low ESR Aluminium Organic Polymer capacitors to give it extremely clean peak power performance. The frequency response extends flat from below 10Hz to above 50kHz.

The RX has super low output impedance, which helps to mitigate the effects of changes across the audio frequency, allowing it to deliver superb audio performance to earphones and more specifically, low impedeance in-ear monitors. Another advantage of a low output impedance is the effect on damping. Damping is the ability of the amplifier to control the drivers, and without a good damping ratio (via low output impedance), a diaphragm will tend to ring or 'bounce' a few extra times after it first moves to produce music. Low source impedance prevents extra movements because it is electronically 'stiff', resulting in higher fidelity reproduction.

A cut-off frequency out near 80kHz insures that no effects are present in the desired frequency range. Tests show the effects of the cut-off frequency first begin to appear around 50kHz, well beyond any audible ability to influence ALO's target audio range, keeping your music crystal clear and distortion free during amplification. Keeping distortion to a minimum is critical for a high fidelity amplifier. Good solid state amplifier practice is to hold distortion to below .01%. ALO's target at listening levels is to stay well below that number. The RX spec is about .002% distortion. While not every amp benefits from lower distortion automatically, the RX's low distortion is certainly a strength.

Design

Limited edition nickel plated CNC'd aluminium enclosure. The RX also features high quality conductive plastic element type potentiometer for extended life, high resolution and high reliability over carbon element type pots.

Other Functions

The RX is rechargeable from any normal USB charger, automatically varying its charging current to match the charger used. The maximum charging rate is set at 900mA, allowing it to take advantage of any available charger. ALO's charger uses a clever scheme to watch the input voltage from the USB supply or port. If the input voltage starts to drop, the amp will reduce its current demand, preventing a potential system shutdown if many devices are charging from a single computer. It also keeps charging optimised to a safe charging level at all times.

Specifications
Frequency Response           20Hz - 20kHz ±0.05dB 
20Hz - 50kHz ±0.6dB 
Input Impedance 10k ohm
Output Impedance <0.5 ohm
Gain Approximately -14.6dB 
THD+N Less than 0.002% from 100Hz - 50kHz 
(measured at 1 Vrms output) 
Charging Maximum charging rate at 900mA
Charger Type Micro-USB charging
I/O Ports 3.5mm stereo input
3.5mm stereo output 
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