Sabaj PHA2 Audio Amplificador de Auriculares Portátil AMP 5V 6.35mm TPA6120A2,Color Negro
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- Módulo de potencia de refuerzo integrado que aumenta la potencia de entrada de 5V a +-15V patentado por Sabaj.
- Sonido de calidad audiófila con un buen gabinete de aluminio CNC
- Entrada de corriente de 5V por Micro USB o adaptador de corriente
- Condensador WIMA y SIEMENS utilizado, usando chips de amplificación de auriculares TPA6120A2 de TI
- Entrada de señal analógica RCA para amplificador o conexión de altavoz activa
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Descripción del producto
Módulo de potencia de impulso patentado por la parte inferior integrado que aumenta la potencia de entrada de 5 V a 15 V. Sonido de calidad audiófila con un buen armario de aluminio CNC.
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In comparing the two amps, I mainly used a pair of AKG K612 PRO, along with the Beyerdynamic DT990 PRO and a foam-modded Sennheiser HD558. Both amps were connected to a Motu Micro Book USB interface with a 1/8" to RCA stereo cable. My finding with all of the headphones tested is that the Sabaj has a wider and smoother presentation, with a richer tonality, where the O2 has a stronger and harder center image. Both amps are similar in power, with the O2 having a bit more available.
The Sabaj can be powered by USB or a supplied adapter, and my preference would be to use the USB connection for the sake of less clutter. Unfortunately, my computer onboard audio has been prone to a high pitched whine, presumably caused by an issue with my motherboard. The Motu Microbook, which is USB-powered, does not pick up the sound, but the Sabaj seems to at high settings. I may purchase a USB cable with a ferrite magnet as a possible remedy. Be warned that using USB power for this amp could introduce noise depending on the setup and environment. Still, it is a nice option to have available and the voltage boost seems to work as advertised when comparing to the Objective 2 which runs on an AC adapter.
The dual outputs are also a nice feature, with the smaller of the two supplying a lower volume signal for lower impedance headphones. The difference in volume between the two outputs was not as much as I was expecting, which I consider a good thing in terms of having a nice overlap in range in relation to the volume knob. I was also surprised at the benefit of amping the Sennheisers, which I used through the large 1/4 output, as the 558 is only 50 ohms. It has been said that these headphones benefit little from amplification, but from this experience, it is very necessary to clear up some mud and haze otherwise present in the sound. The Sabaj is a good solution, and it brought the sound of these headphones on par with the Beyer and AKGs I tested. At half the price of my new desktop model O2, I consider the Sabaj PHA2 a great value and comparable in sound quality.
The only downside is that their specifications do not include the expected voltage/impedence values for each I/O. Eventually I wormed my way through CS to get the answers I needed. They should publish the specs beyond the fuzzy, warm guidelines for each output jack.
I recommend the Sabaj.