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USB powered headphone amplifiers

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USB powered

— powered by a USB connector — usually the same one that is used as a source of digital audio signal.

Such power is more common in portable models, although it can also be used in stationary models (see "Type"). However, its features no longer depend so much on the specific amplifier, but on the external device with which it is used. So, when used with a PC, such a USB connection is in many ways similar to a network connection: the operating time is unlimited, and the power of the amplifier can be quite high (although not as high as when using an outlet), but there is no question of freedom of movement . Smartphones and other mobile gadgets, on the contrary, are autonomous, but their power outputs are not very powerful. On the other hand, such power is most often not required for them, and the unequivocal disadvantage can only be called the moment that the amplifier additionally consumes the battery of the gadget. Connecting to a laptop combines the features of both options described above: the power supply is comparable to the USB ports of stationary PCs, while the laptop can work without an outlet, feeding both itself and the connected amplifier from its own battery.
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Headphone Amplifier FiiO BTR17
FiiO BTR17
DACUSB CGain ControlequalizeriPod/iPhonedisplay
Type:portable
DAC:ESS ES9069Q (2 pcs.), 768 kHz, 32 bit
Headphone output:8 – 300 Ohm, mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:1300 мВт at 32 Ohm, 250 мВт at 300 Ohm
Frequency range:20 – 80000 Hz
Signal/noise:126 dB
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Price from $219.99
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Headphone Amplifier FiiO BTR7
FiiO BTR7
DACUSB CBluetooth amplifierGain ControliPod/iPhonedisplay
Type:portable
DAC:ESS ESS9219 (2 pcs.), 384 kHz, 32 bit
Headphone output:16 – 150 Ohm, mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:320 мВт at 32 Ohm
Signal/noise:115 dB
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Price from $129.99
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Headphone Amplifier FiiO BTR13
FiiO BTR13
DACUSB CBluetooth amplifierGain ControliPod/iPhonedisplay
Type:portable
DAC:96 kHz, 24 bit
Headphone output:16 – 150 Ohm, mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:220 мВт at 32 Ohm, 55 мВт at 300 Ohm
Frequency range:20 – 40000 Hz
Signal/noise:128 dB
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Price from $76.99
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Headphone Amplifier FiiO BTR15
FiiO BTR15
DACBluetooth amplifierdisplay
Type:portable
DAC:ESS ES9219MQ (2 pcs.), 384 kHz, 32 bit
Headphone output:8 – 350 Ohm, mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:250 мВт at 32 Ohm
Frequency range:20 – 50000 Hz
Signal/noise:120 dB
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Price from $119.99
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Headphone Amplifier Shanling UA1 Plus
Shanling UA1 Plus
DACUSB C
Type:portable
DAC:768 kHz, 32 bit
Headphone output:32 Ohm, mini-Jack 3.5 mm
Power:80 мВт at 32 Ohm
Frequency range:20 – 40000 Hz
Signal/noise:126 dB
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Price from $43.61 up to $44.00 
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Headphone Amplifier Moondrop Dawn Pro
Moondrop Dawn Pro
USB CiPod/iPhone
Type:portable
DAC:384 kHz, 32 bit
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Frequency range:5 – 82000 Hz
Signal/noise:123 dB
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Price from $59.99
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Headphone Amplifier FiiO KA13
FiiO KA13
DAC
Type:portable
DAC:CS43131, 384 kHz, 32 bit
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Frequency range:20 – 50000 Hz
Signal/noise:122 dB
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Price from $65.99 up to $83.00 
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Headphone Amplifier Shanling UA4
Shanling UA4
DACUSB CiPod/iPhonedisplay
Type:portable
DAC:ESS ES9069Q, 768 kHz, 32 bit
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:137 мВт at 32 Ohm
Frequency range:20 – 40000 Hz
Signal/noise:120 dB
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Price from $85.99 up to $89.00 
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Headphone Amplifier xDuoo XP-2
xDuoo XP-2
DACBluetooth amplifierGain Control
Type:portable
DAC:AKM AK4452, 192 kHz, 24 bit
Headphone output:16 – 300 Ohm, mini-Jack 3.5 mm
Power:245 мВт at 32 Ohm
Frequency range:10 – 100000 Hz
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Price from $169.00
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Headphone Amplifier Shanling UA6
Shanling UA6
DACUSB Cdisplay
Type:portable
DAC:CS43131, 768 kHz, 32 bit
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:360 мВт at 32 Ohm
Frequency range:20 – 40000 Hz
Signal/noise:132 dB
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Price from $143.10
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Headphone Amplifier iFi Hip DAC 2
iFi Hip DAC 2
DACUSB CGain Control
Type:portable
DAC:Burr-Brown Multibit, 384 kHz
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:280 мВт at 32 Ohm
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Price from $159.00 up to $189.00 
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Headphone Amplifier FiiO KA15
FiiO KA15
DACUSB Cequalizerdisplay
Type:portable
DAC:768 kHz, 32 bit
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:1120 мВт at 32 Ohm
Frequency range:20 – 50000 Hz
Signal/noise:123 dB
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Price from $99.99
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Headphone Amplifier Audioengine DAC3
Audioengine DAC3
DACUSB C
Type:portable
DAC:ESS ES9281A PRO, 384 kHz, 32 bit
Headphone output:12 – 10000 Ohm, mini-Jack 3.5 mm
Frequency range:10 – 25000 Hz
Signal/noise:116 dB
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Price from $149.00
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Headphone Amplifier Shanling H2
Shanling H2
DACUSB CBluetooth amplifierGain Controldisplay
Type:portable
DAC:Cirrus Logic CS43198, 384 kHz, 32 bit
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:680 мВт at 32 Ohm
Frequency range:20 – 40000 Hz
Signal/noise:125 dB
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Colour:
Price from $152.10 up to $399.00 
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Headphone Amplifier FiiO KA11 LT
FiiO KA11 LT
DACiPod/iPhone
Type:portable
DAC:CS43131, 384 kHz, 32 bit
Headphone output:16 – 300 Ohm, mini-Jack 3.5 mm
Power:400 мВт at 32 Ohm, 44 мВт at 300 Ohm
Frequency range:20 – 20000 Hz
Signal/noise:125 dB
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Price from $32.99
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Headphone Amplifier Cayin RU7
Cayin RU7
DACUSB Cdisplay
Type:portable
DAC:R-2R, 384 kHz
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:160 мВт at 32 Ohm
Frequency range:20 – 42000 Hz
Signal/noise:114 dB
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Price from $289.99
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Headphone Amplifier FiiO Q15
FiiO Q15
DACUSB CBluetooth amplifierGain ControliPod/iPhonedisplay
Type:portable
DAC:AK4191EQ+AK4499EX, 768 kHz, 32 bit
Headphone output:8 — 350 Ohm, mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:1250 мВт at 32 Ohm, 170 мВт at 300 Ohm
Frequency range:20 — 80000 Hz
Signal/noise:123 dB
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Price from $439.99
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Headphone Amplifier FiiO KA3
FiiO KA3
DAC
Type:portable
DAC:ES9038Q2S, 768 kHz, 32 bit
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:130 мВт at 32 Ohm
Frequency range:20 – 20000 Hz
Signal/noise:122 dB
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Price from $89.99
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Headphone Amplifier HIDIZS S3 Pro
HIDIZS S3 Pro
DACequalizeriPod/iPhone
Type:portable
DAC:ESS9281C Pro DAC, 384 kHz, 32 bit
Headphone output:mini-Jack 3.5 mm
Power:55 мВт at 32 Ohm
Frequency range:20 – 40000 Hz
Signal/noise:130 dB
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Price from $49.99
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Headphone Amplifier Astell&Kern AK HC2
Astell&Kern AK HC2
DACiPod/iPhone
Type:portable
DAC:CS43198, 384 kHz, 32 bit
Headphone output:Pentaconn 4.4 mm
Photos 6Prices 1
Price from $119.00
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Headphone Amplifier FiiO A5
FiiO A5
Gain Control
Type:portable
Headphone output:16 – 300 Ohm, mini-Jack 3.5 mm
Power:800 мВт at 32 Ohm, 150 мВт at 300 Ohm
Frequency range:10 – 90000 Hz
Signal/noise:115 dB
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Price from $119.99
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Headphone Amplifier iFi GO Blu
iFi GO Blu
DACUSB CBluetooth amplifier
Type:portable
DAC:Cirrus Logic CS43131, 96 kHz, 24 bit
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:165 мВт at 32 Ohm
Frequency range:20 – 45000 Hz
Signal/noise:117 dB
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Price from $179.00 up to $199.00 
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Headphone Amplifier iFi Hip DAC 3
iFi Hip DAC 3
DACUSB CGain Control
Type:portable
DAC:Burr-Brown, 384 kHz, 32 bit
Headphone output:mini-Jack 3.5 mm, Pentaconn 4.4 mm
Power:280 мВт at 32 Ohm
Frequency range:20 – 45000 Hz
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Price from $199.00
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Headphone Amplifier iFi Nano iDSD BL
iFi Nano iDSD BL
iPod/iPhone
Type:portable
DAC:384 kHz, 32 bit
Headphone output:15 – 600 Ohm, mini-Jack 3.5 mm
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Price from $199.00 up to $240.00 
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