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Aune X7s (2021) Class A Balance Output Audio AMP HIFI Audiophile Headphone Amplifier
The 2021 version of Aune X7s comes with a brand new power on/off switch at the back and updated packaging box.
Aune X7s is the latest model in X series. It's a pure Class-A headphone amplifier that meets the most demanding requirements. It’s also a mini high-end desktop headphone amplifier that can drive most of headphones and earphones.
Latest Hi-Fi desktop headphone amplifier from the same designer who designed Aune's classic Panda and B1 headphone amplifier.
Slightly larger than CD Disc, X7s’s flexibility apply to diverse listening environment as study/bedroom/office.
Equipped with 8 pcs power transistors that split into 4 groups for true balance output, along with ±15V regulated power supply result in a powerful driving ability.
Class A is also named as A class.
Two pcs of (or two groups of) crystal tubes of class A amplifier output stage are always in conductive state, that is to say, no matter whether there is input signal or not, they would keep conducting current all the time and make these two currents equal to peak value of AC power. At this time AC flows into load under condition of its large signal. Because of super-low infidelity of its open-loop, it is regarded as the most idealistic amplifying design of sound.
Class A has merits of fullness and clearness in sound and makes triode work within linear area forever, so infidelity hardly happen to class A. It gives a very good sensitivity of listening, especially its small signal, which sounds clear, detailed and rich.
X7s was set in Class-A mode at 38mA static current of each output transistor, it results in a full bodied, wide sound-stage and warm sound character.
Excellent Measurement Results
Frequency response: 20-200K±0.3dB, noise: 3uV, THD+N: 0.00013%---truly dark background.
Both nature and musical, according to the real musical instruments and based on the understanding of music connotation
With three gears of gain adjust; X7s can drive most of headphones and earphones on the market.
Four independent sub-circuits constitute the balance output that provides more realistic sound performance, two output terminals with two kinds of music style.
Frequency Response: 20Hz-200kHz±0.3dB
TYP THD + n <0.00014% @ 1kHz 300RZ
TYP THD + n <0.00013% @1kHz 300RZ XLR
TYP CCIF IMD <0.00036%
TYP CCIF IMD <0.00057% XLR
MAX OUTPUT POWER = 250mW @ 300RZ
MAX OUTPUT POWER = 1000mW @ 300RZ XLR
MAX OUTPUT POWER = 1700mW @ 32RZ XLR
CLASS-A POWER 200mW @ 300RZ
SNR>117DB @ 300RZ
SNR>125DB @ 300RZ XLR
CROSSTALK<92DB @1khz 300RZ
CROSSTALK<92DB @1kHz 300RZ XLR
Size: 145mm x 171mm x 45mm