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  • Nobsound NS-08E Vacuum Tube Integrated Amplifier Mini Audio Hi-Fi Stereo Headphone Amp Upgrade Version

    Notice: Please turn on the amplifier for about 15 seconds before you connect the audio source and put on the headset. We recommend using 24~600Ω headphones, while armature earphones and headphones that have low resistance and high sensitivity are not suitable. As there will be tube Microphone effect, please keep the amplifier steady while using it. For noise issue, please keep it away from devices like routers, mobile phones or something that may interfere in the audio signal. If there are no interference, please remove all input and listen to see if the noise still exists. If so, the device may be defective and you can contact us to get support. Specifications: Output power: ≥1100 mW (32 ohm) Headphone Adapter Impedance: 18-600 ohm Total harmonic distortion:

    • ASIN: B014FASL1A
    • Brand: Nobsound
    • ASIN: B014FASL1A
    • UPC: 769700919653
    • Part No: 769700919653

  • LOXJIE P20 Full Balance Tube Amplifier Headphone Power Amplifier (Red)

    P20 is Loxjie's first full balance tube amplifier headphone power amplifier!It use the military grade 6N3 tube,Plus the well-designed and calibrated amplifier circuit! Let the amplifier have lower distortion under the premise of ensuring"Tube Style"!And the P20 also has true balanced inputs and outputs!This can maximize the performance of the headphones! Specification Output Power Unbalanced headphones 32Ω: 385mW 64Ω: 210mW 150Ω: 105mW 300Ω: 55mW 600Ω: 29mW Balanced headphones 32Ω: 425mW 64Ω: 665mW 150Ω: 565mW 300Ω: 325mW 600Ω: 175mW THD+N: 0.02% THD+N: 0.006% SNR: 97dB SNR: 102dB Power Consumption: 10W Standby power: 0.5W Size: 148x70x128(WxHxD) Weight: 600g

    • ASIN: B07H5JLD2Q
    • Color: Red
    • Brand: LOXJIE
    • ASIN: B07H5JLD2Q
    • Part No: P20

  • Bravo Audio V2 Class A 12AU7 Tube Multi-Hybrid Headphone Amplifier

    Enjoy the pure, non-fatiguing sound of Class A amplification with the Bravo V2 headphone amplifier.

    • ASIN: B00ADR2DTG
    • Color: V2
    • Brand: Bravo Audio
    • ASIN: B00ADR2DTG
    • UPC: 887521830374
    • Part No: V2

  • Little Dot MK2 MKII 6J1 X 2 6N6 X 2 Tube Standard Hybrid Headphone Headphone Amp Pre-Amp Tube Amplifier (MKII)

    SEPP (Single ended Push Pull) OTL in Class A Input: Gold Plated Unbalanced (RCA) Jacks Output: 1/4\" Gold Plated Stereo Headphone out Driver Tubes: 6JI Power Tubes: 6N6 Frequency Response: 20HZ ~ 50KHz (minus 1 dB) THD plus N: 0.1 percent (50mW into 300 ohms) Suitable Headphone Impedance: 32 ~600 ohms Input Impedance: 50K ohms Pre Amplifier Output Impedance: 600 ohms Pre Amplifier Gain: 3~10x (also controlled via gain switches) Pre Amplifier Voltage: 10V RMS Pre Amplification circuit includes both driver and power tubes Power Output: 300mW into 300 ohms 200mW into 120 ohms 100mW into 32 ohms Power Consumption: 28W (228V x 0.124A) Metric: 210mm (length) by 110mm (width) by 130mm (height) English: 8.26 inches (length) by 4.33 inches (width) by 4.18 inches (height) Weight: 2.5 kg or 5.5 lbs.v

    • ASIN: B00A2QMAI2
    • Color: MKII
    • Brand: AIMPIRE
    • ASIN: B00A2QMAI2
    • UPC: 620013013998
    • Part No: LDI+

  • DarkVoice 336SE Headphone Tube Amplifier

    Products Introduction - Tube Used : 6N8P, 6N5P(6080, 6080g, 6080w, 6AS7, 6AS7g, 6AS7w) - Colour: Black, Silver - Frequency: 10Hz~20kHz+/-1dB - Distortion:

    • ASIN: B00CF9JON8
    • Color: Red./
    • Brand: DarkVoice
    • ASIN: B00CF9JON8
    • UPC: 633420125468
    • Part No: 1

  • Rockville BluTube 70W Tube Amplifier/Home Theater Stereo Receiver with Bluetooth

    Rockville BluTube Bluetooth tube 70 watt amplifier/home theater stereo receiverrockville BluTube audiophile grade tube amplifier with Bluetooth. 25 watts x 2 RMS @ 8 Ohm. 35 Watts x 2 RMS @ 4 Ohm. Tube Amps do not hard-clip even at high volumes and are extremely efficient. Due to this the amp sounds more like double the rated power!.

    • ASIN: B07L55V58S
    • Brand: Rockville
    • ASIN: B07L55V58S
    • UPC: 819216022603
    • Part No: BluTube

  • SMSL T2 Vacuum Tube Headphone Amplifier, Mini Audio HiFi Stereo Integrated Amp

    FEATURES: Our T2 amp utilizes two 6J9 J-grade tubes and two NJM5532D as core parts of the circuit. The 6J9 tubes amplify the voltage which increases the input signal. The current formed by NJM5532D (Made by JRC Japan Company) amplifies the electric circuit to drive the mini headphone amplifier. These two features provide an awesome combination of high quality sound and a very powerful drive current for an optimum listening experience! Our T2 amp adopts a Single Chip Microcomputer and Relay to control the muted sound when the device is OFF or first turned ON. It allows the device to warm up before transmitting sound, protecting the unit and your speakers and preventing that annoying "popping" sound that is heard with many other, fewer quality systems. Please Note: The blue LED lights will flash for about 35 seconds when the unit is first powered on. This indicates that the unit is warming up. The blue lights will be lit solid when the amplifier is ready to be used! SPECIFICATIONS: Input/Output Interface: 3.5 mm Stereo Jack Output Power: 32 Ω: 70 mW 64 Ω: 44 mW 150 Ω: 23 mW 300 Ω: 13 mW THD+N: 0.0015% SNR: 80dB Frequency Response: 20Hz-20kHz Residual Noise: 0.02mV Consumption Power: 5.6W PACKAGE INCLUDES: 1 X T2 headphone amp 1 X T2 user manual 1 X Adapter

    • ASIN: B06XYJB7S8
    • Color: Black
    • Brand: SMSL
    • ASIN: B06XYJB7S8
    • UPC: 607994576834
    • Part No: T2

  • Little Bear B4-X Portable Dual-Mono Vacuum Tube Headphone Amplifier; Mini Balanced Audio Headphone Amp B4 Upgrade Version

    Parameters: Tube: USA RAYTHEON JAN5899 ×2 Op amp: NE5532*2 (can be upgraded ) Lithium Battery: 12V, 1000mA Charging time: 2-2.5 hours Working time: 4-4.5 hours Output power: 450mW SNR: 105dB Suggest load impedance: 16-300Ω Output: 2.5 balanced Jack*1, 3.5mm Jack *1 Size (L*W*D): 115*69*23 mm / 4.5*2.7*0.9 in (without knobs) Packing List: 1× headphone amplifier 1× power supply 1× 3.5mm audio cable 2× band Notice: When using B4-X with your cellphone, if you heard some "zhi ~ zhi" noise in your headphone. Probably it is the inteference from your cellphone such like WIFI or 4G signal, which intefers the tube and cause noise. That's normal. Because there are microphone effect with all tubes. To avoid it, please keep your cellphone far away from B4-X. Q&A: Q: Tried different source and headphones, but the right channel still has static. A: Maybe the tube has a poor contact after long shipping process, open the chasis and adjust the screw near the tube while listening (if you cannot find it, contact us and we will give you a photo with marks to help you). Maybe the tube is broken, you can buy a 5899 tube in local shops. And we will refund you the cost. Q: It broke just now four loud pops and it's doesn't work now. A: Mainly because the battery is run out of power. Please charge...

    • ASIN: B07KJ18H75
    • Color: Upgrade Version Black
    • Brand: Little Bear
    • ASIN: B07KJ18H75
    • Part No: JMQ413_H

  • Tube Headphone Amplifier Mini Hi-Fi Stereo Audio Headphones Amp 6J4 Vacuum Tube Integrated Amplifier with Low Ground Noise, Output Protection for Headphones - Fosi Audio P2

    Specifications: Tubes: 6J4 × 2 OP-amp: NE5532 Audio Input: 3.5mm Audio jack, Stereo L / R RCA Audio Output: 6.35mm Headphones Maxpower output: 600 mW / 62Ω, 900 MW / 32Ω, 1 W / 16Ω Frequency range: 20Hz-20 kHz (± 3dB) THD: ≤0, 03% Matching headphone impedance: 32-600 Ω NR: ≥ 95db Operating voltage: DC12V Input sensitivity: 0.2mV Dimension: L99 * W98 * H33 mm Net weight: 0.25 kg Model direct replacement tube: 6j1, 6AK5, EF95, 5654, 403B etc. Packing List: 1 * headphone amplifier 2 * 6J4 vacuum tubes 1 * DC 12V Power Supply 1 * 6.35mm to 3.5mm Adapter Tips: 1. When you use this product for a long time,please do not touch it by your bare hand, it may hot,but please don't worry this is a normal phenomenon.) 2. Please plug the power supply after all the connection been done for safety; 3. We recommend using 32~600Ω headphones, while armature earphones and headphones that have low resistance and high sensitivity are not suitable. 4. For noise issue, please keep it away from devices like routers, mobile phones or something that may interfere in the audio signal. 5. Please make sure the tubes completely pushed into the device, incompletely connection will cause noise or poping sound.

    • ASIN: B07RQTKVM1
    • Brand: Fosi Audio
    • ASIN: B07RQTKVM1
    • Part No: P2

  • Sabaj PHA3 Vacuum Tube Headphone Amplifier 2X6J9 Low Ground Noise Integrated Stereo Amp Audio HiFi Output Protection for Headphone

    Input Interface: 3.5 mm Stereo Jack Output Power: 32 Ω: 115mW 64 Ω: 77 mW 150 Ω: 39 mW 300 Ω: 20 mW THD+N: 0.032% SNR: 95dB Consumption Power: 5.5W Frequency Response: 20Hz-20kHz Residual Noise: 0.02mV

    • ASIN: B07D525SB7
    • Color: Black
    • Brand: Sabaj
    • ASIN: B07D525SB7
    • Part No: PHA3