Douk Audio Mini Amplificador Portátil Fone de Ouvido Hifi Áudio Estéreo Amp para Telefone Tocador de Áudio
R$ 255,20
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Amplificador de Auscultadores
Opção de Compra e tempo de entrega
Ficha técnica do produto
| Características | Especificações |
|---|---|
| Material | Metal |
| DSD (direct Stream Digital) | NÃO |
| Amplificador Operacional Chips Modelo | Mc33078p |
| Embalagem | YES |
| Impedância Máxima Recomendada do Fone de Ouvido | 251-300 Ohms |
| Bateria Embutida | SIM |
| Saída | Line OUT (saída de Áudio) |
| Tipo de Entrada | Entrada de Linha (áudio) |
| Nome da Marca | Douk Audio |
| Origem | CN (origem) |
| Tipo | Headphone Amplifier |
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This is a portable headphone amplifier with built-in battery. Its sound output is full of analog style, sweet and warm especially for vocals. And the background noise is still very quiet even with in max volume.
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Full symmetrical power amplifier circuit: It supports high +/- current power supply, and enhances signal-to-noise ratio as well as frequency response. It also supports audio input and USB charging in the same time like being connected to a computer.
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It adopts replaceable OP Amp design, default MC33078P (the same model as Beyerdynamic A1), which can be replaced by many op amps like OPA2134PA / AD712 / LME49720NA / MUSES 8820 and so on.
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Mini size with fashionable appearance, bulit-in battery makes it portable can be taken everywh, its battery can make it work at least 9 hours (normally 9-12H), when the battery is low, the power LED will flash every 0.5s.
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Comprehensive protection. It has a 2s turn-on delay to avoid damaging the headphone. And when the circuit meet problems, it will cut off the headphone output. It also has a overcharge protection function.
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Charging: Standard Micro USB 5V. The red LED is on while being connected power supply (or a computer USB). After about 3.5h charging, the red LED goes out and the charging is completed. The device can work while charging. It will stop charging automatically when the battery is full.
Paramaters
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Output power: >= 700mW(32O)
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Suitable headphone impedance: 16-300O
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Total harmonic distortion: < 0.005%
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Signal-to-noise ratio: >= 120DB
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Frequency response: 10-30K Hz
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Bulit-in lithium-polymer battery capacity: 9.6Wh (3.7V/2600mAH)
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Battry life: > 9h (normally 9-12 h)
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Charging interface: standard MICRO USB 5V
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Charging current: 800mA
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OP-amp: MC33078P (Replaceable OPA2134PA\OPA2604\OPA2107\AD712\AD827\LME49720NA\MUSES 8820\MUSES 8920\MUSES01\MUSES02 etc.)
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Dimensions: 104.5*58.5*14 mm (including knobs)
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Net weight: 120g
Packing List
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1 * Headphone Amplifier
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1 * USB Cable
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2 * Headphone Amp Cable Tie
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