RFTLYS EA1A Headphone Amplifier & Integrated Amp Wireless Bluetooth EL34 Tube Class A Single-Ended(Silver)
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Warm reminder: You should take about 100h time to operate the amp.RUN-IN to the amp gives it's best and stable sound.So during the first 100h use time the sound maybe is not the best,you can also use your own run-in method.Easy to install plug-in vacuum tube protective cover.Vacuum tube: EL34x2, 6N1x2, 12AX7x1The 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.In order to improve the input voltage amplifier stage electrical performance. Reduce distortion, broaden the frequency response, and add current feedback at the cathode of the two-stage amplifier. At the same time, inter-stage negative feedback is set between the input tube cathode and the power amplifier output.
상품설명
Color:Silver The amplifier stage is composed of a standard class Class A power amplifier circuit. The amplifier tube to screen load impedance is 6KΩ, and the plate voltage is 375V. 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 16W, high power can reach 22W. 4.0 Bluetooth HiFi Module The amplifier supports Bluetooth input and can be easily paired with Android, iPhone, iPad, Tablet PC and other devices. Support headphones to switch output, is a tube headphone amp Bluetooth tube amplifier features: 1. Pure vacuum tube, pure hand-made, the whole machine adopts scaffolding welding. 2. Use two high quality wide frequency response EI output transformers. 3. Use an EI-type high-quality audio-dedicated power transformer developed specifically for this purpose. In the previous stage, two 6N1 vacuum tubes and one 12AX7 vacuum tube were used. 5. Two EL34 vacuum tubes were used as AB1 push-pull power amplification in the later stage. 6. With headphone output function. Directly connected to headphones 7 Select Japan ALPS high-end potentiometer. 8. Easy to install plug-in vacuum tube protective cover. Specification: Output power: 8W+8W (RMS 8 ohms,16W+16W (RMS 4 ohms)(Class A, Single-ended) Power consumption: 260W Frequency response: 18Hz-40KHz Total harmonic distortion: ≤1.2% (1KHz) Input sensitivity: 290mV Input impedance: 100KΩ Output Impedance: 4Ω , 8Ω Headphone output impedance: 32-300 Ω Signal to noise ratio: ≥85dB(A weight) Power supply: 110V-120V 50Hz （For United States） If you need other voltages, please contact us first. AC100V- AC240V(60Hz/50Hz) version is in stock.） Vacuum tube: EL34x2, 6N1x2, 12AX7x1 Dimensions: width 210 x height 156 x depth 343 (mm) Net weight: 7.5kg Gross weight: 10kg
Warm reminder: You should take about 100h time to operate the amp.RUN-IN to the amp gives it's best and stable sound.So during the first 100h use time the sound maybe is not the best,you can also use your own run-in method.Easy to install plug-in vacuum tube protective cover.Vacuum tube: EL34x2, 6N1x2, 12AX7x1The 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.In order to improve the input voltage amplifier stage electrical performance. Reduce distortion, broaden the frequency response, and add current feedback at the cathode of the two-stage amplifier. At the same time, inter-stage negative feedback is set between the input tube cathode and the power amplifier output.
상품설명
Color:Silver The amplifier stage is composed of a standard class Class A power amplifier circuit. The amplifier tube to screen load impedance is 6KΩ, and the plate voltage is 375V. 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 16W, high power can reach 22W. 4.0 Bluetooth HiFi Module The amplifier supports Bluetooth input and can be easily paired with Android, iPhone, iPad, Tablet PC and other devices. Support headphones to switch output, is a tube headphone amp Bluetooth tube amplifier features: 1. Pure vacuum tube, pure hand-made, the whole machine adopts scaffolding welding. 2. Use two high quality wide frequency response EI output transformers. 3. Use an EI-type high-quality audio-dedicated power transformer developed specifically for this purpose. In the previous stage, two 6N1 vacuum tubes and one 12AX7 vacuum tube were used. 5. Two EL34 vacuum tubes were used as AB1 push-pull power amplification in the later stage. 6. With headphone output function. Directly connected to headphones 7 Select Japan ALPS high-end potentiometer. 8. Easy to install plug-in vacuum tube protective cover. Specification: Output power: 8W+8W (RMS 8 ohms,16W+16W (RMS 4 ohms)(Class A, Single-ended) Power consumption: 260W Frequency response: 18Hz-40KHz Total harmonic distortion: ≤1.2% (1KHz) Input sensitivity: 290mV Input impedance: 100KΩ Output Impedance: 4Ω , 8Ω Headphone output impedance: 32-300 Ω Signal to noise ratio: ≥85dB(A weight) Power supply: 110V-120V 50Hz （For United States） If you need other voltages, please contact us first. AC100V- AC240V(60Hz/50Hz) version is in stock.） Vacuum tube: EL34x2, 6N1x2, 12AX7x1 Dimensions: width 210 x height 156 x depth 343 (mm) Net weight: 7.5kg Gross weight: 10kg
2019-04-22 15:32:21
