RFTLYS EA1A EL34 ламповый усилитель для наушников и интегрированный усилитель HiFi с Bluetooth
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All items ONE-YEAR WARRANTY !!!
We can Declare the Value of the Order as Customer's Remark!!!
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Output power: 8W+8W (RMS 8Ω ;)
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Power consumption: 120W
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Frequency response: l8Hz-40KHz
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Total harmonic distortion: ≤l.2% (lKHz)
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Input sensitivity: 290mV
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Input impedance: 100 kohms
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Output Impedance: 4 ohms, 8 ohms
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Headphone output impedance: 32-300 ohms
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Signal to noise ratio: ≥85dB(A weight)
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Power supply: 100V - 240V 60Hz/50Hz
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Vacuum tube: EL34x2, 6N1x2, 12AX7x1
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Voltage:110v-120v or 220v-240v
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Dimensions: 210 x 156 x 343 (mm)
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Net weight: 7.5kg
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The input voltage amplification stage is served by an amplifying triode electron tube, and a two-stage common cathode resistance RC coupling amplifier is combined. The two-stage voltage gain can reach more than 40dB before the negative feedback is added, and can greatly increase the input audio signal amplitude
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At the same time, inter-stage negative feedback is set between the input tube cathode and the power amplifier output.
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The amplifier supports Bluetooth input and can be easily paired with Android, iPhone, iPad, Tablet PC and other devices.
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The power amplifier stage is composed of a standard class Class AB1 power amplifier circuit. The power amplifier tube to screen load impedance is 6 kohms, and the plate voltage is 375V.
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Using only the gate negative bias mode, the zero-signal push-pull two-plate electrode power is 85mA, and the large screen current increases to 150mA. Rated output power is l6W, high power can reach 22W.
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Independent Bluetooth antenna
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4.0 Bluetooth HiFi Module
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Support headphones to switch output, is a tube headphone amp
Bluetooth tube amplifier features:
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Pure bile, pure hand-made, the whole machine adopts scaffolding welding.
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Use two high quality wide frequency response EI output transformers.
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Use an EI-type high-quality audio-dedicated power transformer developed specifically for this purpose.
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In the previous stage, two 6N1 vacuum tubes and one 12AX7 vacuum tube were used.
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Two EL34 vacuum tubes were used as AB1 push-pull power amplification in the later stage.
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With headphone output function. Directly connected to headphones
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Select Japan ALPS high-end potentiometer.
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Easy to install plug-in vacuum tube protective cover.
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