Best Home Theater Vacuum Tube Amplifier

Color:MC-13S Specification Output Power:40W + 40W (8ohm) Frequency Response:10Hz — 60kHz (±2dB) Signal/Noise Ratio: ≥85dB (A) Load impedance: 8ohm or 4ohm Distortion:≤0.9%(28W) Maximum Power Consumption:220W Sensitivity:≤0.26V Tubes: 6CA7T x 4 12AX7B x 2 12AU7 x 2

Parameters:

• With original and new tubes 6n9p+EL34B
• Input Impedance: 100Kohm
• Output Impedance:4ohm 8ohm
• Signal to Noise Ratio: 89dB
• Input Sensitivity: 500–2000mV
• Input :110V/ 220V
• Output power:13w+13w (RMS)
• Frequeney responses: 20Hz–30KHz+/-1dB
• Supply Votage: all voltages are available 60Hz/50Hz
• Total Hamonic Distortion: less than 1%(1KHz)
• Tubes Included: 2pcs EL34B, 2pc 6N9P, 1pc 5Z3P
• Maximum input peak：500mW
• Dimension:350(W)*50(H)*170(D)mm
• Weight: 9.5kg
• With 2 new original BENNIC 0.33UF630V Capacitor, 2 ELNA 220UF/63V Resistor

Notice:

• The loading resistor of this product is 4 ohm /8 ohm. Please do not change the value. Otherwise, the 6P3 loading resistance will be changed too.
• Please don’t cut off the loading when it’s working.
• If you want to connect this amplfier with a preamplifier when playing, please turn on the preamplifier first.
• Please preheat the tubes before using.

Features:
This is the latest headphone amplifier designed by Nobsound and Little Bear. It is not only a pure class A vacuum tube headphone amplifier but also can be used as a preamplifier, which can meet different audio device requirements.
It adopts the classic SRPP circuit, which has been famous for its low background noise. Its sound output is full of analog style especially suitable for high-impedance headphones (> 200 ohm).
With stereo L/R RCA and 3.5mm AUX audio input, compatible with iPod, Phone, MP3 players, TV, Echo Dot, CD players, or Streaming Media players and so on. Dual headphone output (6.35mm/3.5mm) provides quiet enjoyments of HiFi music.
Proper size with exquisite appearance, unique layout and design looks attractive and decent, very suitable for home and desktop audio system use.

Parameters:
Audio input: stereo RCA / 3.5mm AUX
Audio output: stereo RCA / 3.5mm & 6.35mm headphone jack
Tubes: 6N5P×1 (Replace tube: 6080), 6N3/6H3×2 (Replace tube: 5670)
Frequency response: 12HZ-100KHZ (-1dB)
Distortion: 0.05% (300 ohm, 80 mW)
Maximum output power: 300 mw (600/300 ohm); 350 mw (120 ohm); 250 mw (32 ohm)
Output impedance: 32 ohm – 600 ohm
Dimensions: 227*152*44 mm
Weight: 1.5Kg

Packing list:
1 * Headphone Amplifier
1 * 6N5P tube
2 * 6N3/6H3 tube (at random)
1 * Power Cord

Notice:
1. For initial starting, the device needs 5~10s to warm up. While starting, there may be a blue LED shining for about 3~5s and then it would be steady.
2. Please do not use this device for long time. Taking a 10-minute break every 1.5~2h working would be recommended. It is normal that the shell is relatively hot after working for one hour.
3. It would be better to use high-impedance headphones (40~600 ohm). It is not suitable for 12~36 ohm headphones.

Technical parameters:

• Frequeney responses: 10Hz-100KHz (± 0dB), 10Hz-200KHz (± 0.2dB)
• RMS: 0.8W * 2
• Power supply: AC 220V-240V or 110V
• Tubes used: 2pcs 6P6P, 2pcs 6J4, 1pc 653P
• Input: 4ways RCA jacks
• Output: 1way RCA jacks
• Supply votage: All Voltages are available 60Hz / 50Hz
• The machine output voltage of 12V, an enlarged eight times
• Power Transformers 76 * 40 270v * 2 6.3v 3.15v * 2
• Size: 29*17*5CM
• Weight: 3.8 kg

Troubleshooting:
Some customers may find the Bluetooth can’t be connected or found. Here is the solution.
1. Power off the M8 and your phone.
2. Wait for 5s and then power on both.
3. If it still can’t be discovered, repeat 1 and 2 and it should work.
If the problem can’t be solved, please contact us at [email protected]

Specifications:

• Tube: 6J2
• Amplifier Chip: TPA3116
• Rated output power: 2*30W /8Ω, 2*50W /4Ω
• Audio input: 1 set of RCA input; 1 * 3.5mm stereo input; 1 * Bluetooth input
• Audio output: 1 set of Banana Speaker Jacks
• Signal to noise ratio: ＞99dB
• Frequency: 50Hz-60Hz
• Dimensions: 16*11.5*7 cm (including tube height)
• Power supply: universal DC 19V 4.7A

Packing List:

• 1 * Power Amplifier
• 1 * Power supply
• 3 * 6J2 tube (one spare tube)
• 1 * Bluetooth antenna

Troubleshooting:

For noise issue:

• There is a large probability that the low-quality audio cable causes the static noise.
• Please make sure the sound source is fine since tube amplifiers will amplify all sound including the noise.
• Please check whether the tubes are plugged well on the tube sockets or not.
• Devices like routers, mobile phones will also interfere in the audio signal and may cause static noise.
• If your problem can’t be solved, please feel free to contact us. We will be very glad to help you and try our best to make you satisfied.

Notice:
Input signal overload may cause distortion and noise. When this happens, please turn down the volume of the audio source until no noise and then adjust proper volume through the amp itself.

Parameters:
Audio input: 1*3.5mm Jack
Audio output: 2*3.5mm headphone jack(one for 12-40Ω headphone and one for 40-200Ω headphone)
Power supply: DC 12V@2A(5.5/2.2mm)
Tube model: Beijing FU32
Op amp: NE5532
Color: black
Dimensions: (L)86 mm *(W)86 mm *(H)43 mm(Excluding the tube)
Net weight: 320g

Packing List:
1*Headphone Amplifier
1*Power Supply
1*FU32 Tube

Noise may be resulted from:
1. Low-quality audio cables, poor audio source can cause the static noise.
2. The tubes not are plugged well on the tube sockets or the two red wires are not inserted to FU32 tube.
3. Devices like routers, mobile phones will also interfere in the audio signal and may cause static noise.