Best Vacuum Tube Audio Kits

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:

• Please note that this product is a preamplifier. It is not an amplifier and needs to be connected with an amplifier or active audio devices. Also, it is not a phono preamp and can’t work with a turntable.
• 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.

Specifications:

• Audio input: RCA input * 1 group
• Audio output: RCA output * 1 group
• Power DC input: 12V input
• Aluminum shell, CNC processing
• Laser carving characters
• Color: Black / Silver
• Size (W*H*D): 100*70*150 mm / 3.94*2.76*5.91 in
• Weight: 0.5 Kg / 1.1 lb

Package Includes:

• 1 * Digital Audio Preamp
• 1 * 12V Power Supply

Description:

High quality filter power supply. The four pins of rectifier respectively in parallel connect with decoupling capacitor, which can effectively eliminate the high frequency interference of AC power grid. Two 2200UF25V electrolytic capacitor filter the negative power supply, then stabilize voltage with 7815 and 7915 double DC power supply. Now the clutter interference of power grid is very small and the voltage is quite stable. So the item has better performance.The chip has high conversion rate and strong drive ability. The frequency band is wide and noise is very small.

Specifications:

Working Voltage: AC double 15 V (10 W)
Audio Input: RCA sockets
Audio Output: 3P terminal
Input Voltage: 3P terminal

Size: 110 mm x 54 mm x 22 mm

Package includes:
1 x Pre-amplifier Board DIY Set

Note:

1, The amplifier board can not use 12 V battery or DC directly as power supply. Power supply  should be positive and negative double DC power sources, or special AC 12 V transformer power supply.

2, This item need a power amplifier to drive speaker.
3, Please allow 1-3 mm error due to manual measurement. Thanks for your understanding.
4,  Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.

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.

AIRSN Replacement Earbud Ear Tips for Motorola Kenwood Two Way Radio Coil Tube Audio Kits/Transparent Acoustic Tube Earpieces

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Description of RWK81:
The Rockville RWK81 8 AWG (American Wire Gauge) amp kit has the following diferences over other amp kits on the market at this price point.
1. Our RCA cables are 100 % copper. These are top of the line RCA cables
2. Better Resistance: The only thing that really matters with wires is the resistance rating. This is a measurement of conductivity and how much signal is loss per foot of wire. Since Rockville wires are made with around 3 times as much copper as any other wire at this price point, these wires had a much better resistance rating which means they will transfer more power to your amps than the other brands.
3. We do not cheat you on the thickness of the wire. These are standard American wire gauge thickness. This is another reason our conductivity is better than anything else at this price point. Other brands in the market place write 8 gauge, but cheat you on the thickness. We are honest about the thickness.
4. The Rockville amplifier installation kits feature a new soft abrasion proof insulating jacket. This rugged PVC outer jacket allows for 100% improved flexibility over standard power cables making them extremely easy to route through your vehicles interior, and it maintains exceptional resistance to grease and oil. The PVC outer jacket can with-stand an extreme temperature range of -40 to 220 degrees F.
The RCA signal transfer cables included in this kit feature blue and silver twisted pair technology in a clear outer jacket insulation skin. Not only do the blue and silver wires look cool but they also provide superior signal transfer with maximum noise suppression. They are 100% copper to provide absolute lossless perfect signal transfer to your receiver. This technology reduces interference, so your audio signal flows clean and pure at all power levels.

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Lsgoodcare Silicone Rubber Replacement Gel Earplug Earmold Ear Buds Right Ear for Two-Way Radio Headset Air Acoustic Earpiece Headset Walkie Talkie Earpiece,Black Color, Middle Size,Pack of 10

Replacement Gel Earplug Earmold Earbud

Include, right ear Earbuds

Size S: Length: 0.95inch/2.4cm; Height: 0.75inch/1.9cm

Size M: Length: 0.83inch/2.1cm; Height: 1.02inch/2.6cm

Size L: Length: 0.91inch/2.3cm; Height: 1.14inch/2.9cm

please e mail Lsgoodcare directly by e-mail if you have any problem, hope you have good experience from “lsgoodcare”

Features :

• 100%Brand New and High Quality.
• Excellent sound effects.
• Unique appearance.
• Easy to install.
• Provide full music enjoyment to the post-amplifier.
• More stable performance than the original machine.

Specifications :

• Models: 6J1 tube
• Channel types: 2.0 / stereo
• Working voltage: AC12V 0.8 A
• The power interface: 5.5 * 2.5 plug
• Circuit board size: 77 x 75 x 52 mm
• Potentiometer role: volume adjustment + power switch.

Package Included :

• 1 × 6J1 Tube Pre-amplifier Board DIY Kits.

Description of SWT-12S4:

With 1000W peak power handling, this ready-to-use bass reflex subwoofer tube is just the thing for big bass fans. A protective grille ensures that nothing sliding around in the trunk damages the woofer.

Description of RXA-T1:

Over the years, the technology used to create audio amplifiers has grown by leaps and bounds. We consider it our mission to use our expertise in developing the latest technologies and to bring you the absolute best sounding amplifiers on the market at a reasonable price. From its clean, sleek design to its high quality components, you will be amazed at the quality and power that these new Phenom amps offer. The RXA-T1 is a 2 channel high power amplifier with 1,500 Watts peak output, 750 Watts RMS output (2 x 375 @ 2 Ohms) and 500 Watts RMS (2 x 250 @ 4 Ohms). You can also bridge the amplifier and get 1 x 750 Watts RMS @ 4 Ohms. The CEA-2006 compliant rating is 125 x 2 @ 4 Ohms and 185 x 2 @ 2 ohms <1% THD.

Description of RWK81:

The Rockville RWK81 8 AWG (American Wire Gauge) amp kit has the following diferences over other amp kits on the market at this price point. Our RCA cables are 100 % copper. These are top of the line RCA cables Better Resistance: The only thing that really matters with wires is the resistance rating. This is a measurement of conductivity and how much signal is loss per foot of wire. Since Rockville wires are made with around 3 times as much copper as any other wire at this price point, these wires had a much better resistance rating which means they will transfer more power to your amps than the other brands. We do not cheat you on the thickness of the wire. These are standard American wire gauge thickness. This is another reason our conductivity is better than anything else at this price point.