1. Douk Audio
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Nobsound 12AX7 12AU7 Vacuum Tube Preamp HiFi Preamplifier
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Excellent scaffolding design, regular, reasonable, symmetrical device layout, strictly respect the grounding line. Power transformers 76 * 40 h250 035 sheets; japan alPS 16 A-type audio potentiometer.| Brand | Douk Audio #ad |
| Manufacturer | Nobsound #ad |
| Part Number | DJ417F |
| Model | DJ417F |
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2. SUCA-AUDIO
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SUCA-AUDIO Tube-T1 Preamplifier, Vacuum Tube Amplifier Buffer Mini Hi-Fi Stereo Preamp with Treble & Bass Tone Control for Home Audio Player 6K4 Tubes
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Sweet tube sound - vacuum tube preamp will give you a different acoustic enjoyment with dynamic, sweet tube sound enjoyment. You can feel improve of sound quality in your home theater, HIFI system and any streaming media.
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Worth playing - features in volume, treble and bass control knobs for more delicate adjustment of the sound, much fun and high playability with this function, the best choice for either beginner or audiophile. Notice - this is a preamplifier but not a power amplifier or a phono preamp, can't be used for turntables or passive speakers. The main purpose of this machine is to act as a "buffer" to sweet the sound. Rca input & output - connect your computer, ipod and other player with RCA cables input and output to the digital amplifiers, phone, CD, active multimedia audio devices for lossless audioThe RCA cables not included.
| Brand | SUCA-AUDIO #ad |
| Manufacturer | SUCA-AUDIO #ad |
| Height | 0.98 Inches |
| Length | 3.94 Inches |
| Width | 3.35 Inches |
| Part Number | 6K4 Tube-BK |
| Model | Tube-T1 |
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3. AOSHIKE
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AIYIMA Audio 6J1 Tube Preamplifier Bluetooth 5.0 with Treble & Bass Adjustment DC12V HiFi Audio Preamp NE5532P Chips for Amplifier Home Audio SystemSilver+BT 5.0
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It needs to be connected to an active speaker and a rear amplifier. Because when the car starts to fire, DC12V/1A power supplyMax voltage is 12V, the power will reach 13. 5v. Aux / bluetooth audio input, when you use it in the car, otherwise it will burn out the diode, Pls pay attention to having it connected.
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It is not an audio amplifier. The power circuit is completely separate from the audio circuit, Minimizing interference for clear sound. Designed so the tube can be replaced, soft voice. Adopt the dual run amplifier chip NE5532P power conversion module. This product is a preamplifier.| Brand | AOSHIKE #ad |
| Manufacturer | AOSHIKE #ad |
| Height | 1.22 Inches |
| Length | 4.69 Inches |
| Weight | 1.15 Pounds |
| Width | 3.74 Inches |
| Part Number | TUBE-A3 Pro |
| Model | TUBE-A3 Pro |
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4. Douk Audio
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P1 Bluetooth 5.0 Vacuum Tube Preamplifier Hi-Fi Valve Headphone Amplifier Wireless Receiver Audio Decoder Preamp USB DAC APTX
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Pc-usb supports 24bit 192khz and is compatible with Windows/Mac/Linux system. It can be replaced by 6j1, 6j4, 6ak5, GE5654, 6Ж1n-EB. Bypass function can suspend the tone control circuit to achieve purer music experience.
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It supports bluetooth/usb/rca inputs from various devices like iPod, MP3, Blu-ray players, TV, Echo Dot, Phone, CD players, computer etc. Treble & bass control can achieve different sound style. Classic 6j5 vacuum & valve tube can provide warm retro tube sound. Bluetooth 5. 0 supports apt-x, apt-x ll lossless transmission.| Brand | Douk Audio #ad |
| Manufacturer | Nobsound #ad |
| Part Number | DZ066 |
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5. ART
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ART Tube MP/C Tube Pre-Amplifier/Opto-Compressor-Limiter Project Series
#adART #ad - Optical vca-less compressor circuitry = transparent dynamics control. Xlr balanced inputs and outputs. Tube-based mic/line preamplifier with up to 80 dB of gain. A quarter inch unbalanced inputs and outputs. Hand-selected 12AX7a tube.More information #ad
| Brand | ART #ad |
| Manufacturer | ART #ad |
| Height | 2.7 Inches |
| Length | 10.6 Inches |
| Weight | 2.9 Pounds |
| Width | 6.7 Inches |
| Part Number | Tube MP/C |
| Model | Tube MP/C |
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6. Douk Audio
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Nobsound NS-10P Mini Vacuum Tube Preamp Audio Hi-Fi Stereo Pre-Amplifier Treble & Bass Control
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Notice: ① preamplifier needs to work with amplifiers or active devices; ② Not PHONO preamp and can't be used for record players. With independent treble, bass and volume control; Vacuum tubes can be replaced by various models.| Brand | Douk Audio #ad |
| Manufacturer | Nobsound #ad |
| Weight | 0.66 Pounds |
| Part Number | DZ030 |
| Model | DZ030 |
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7. Fosi Audio
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Fosi Audio P1 Tube Pre-Amplifier Mini Hi-Fi Stereo Buffer Preamp 6K4 Valve & Vacuum Pre-amp with Treble & Bass Tone Control for Home Theater System
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All aluminum alloy shell and come with a 18-month manufacturer's warranty. This pre-amp improves everything detail, immediacy, transparency, richness, tone associated with your music. Small compact design, ef95, with optimal integrated circuit to get powerful, 5654, 6AK5, dynamic and sweet sound.
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Built-in switch impact protection circuit and overheat protection circuit, long life span of this unit. Tubes can be replaced by 6K4, 403B tubes. 127822 note: this is a preamplifier, not a power amplifier or phono preamp, can't be used for turntables or passive speakers.| Brand | Fosi Audio #ad |
| Manufacturer | Fosi Audio #ad |
| Weight | 1.1 Pounds |
| Part Number | TUBE-P1 |
| Model | 8541737399 |
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8. ART
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ART TubeMP Tube Microphone Preamp
#adART #ad - Variable input and output controls. Smooth warm and fat sound quality. Over 70dB of gain. Superior preamplification. Phase reversal switch.More information #ad
| Brand | ART #ad |
| Manufacturer | ART #ad |
| Height | 0 Inches |
| Length | 0 Inches |
| Weight | 2.3 Pounds |
| Width | 0 Inches |
| Part Number | Tube MP |
| Model | Tube MP |
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9. Little Bear
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Little Bear T7 Vacumn Tube Mini Phono Stage RIAA MM Turntable Preamp & HiFi Tube Pre-Amplifier Black
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Please do not connect t7 to any inferior Bluetooth digital amplifiers except Class T digital amplifiers, since all Class D amplifiers have very loud background noise. Its tube6j1 can be directly replaced with tubes like 5654, 6AK5, EF95.
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Etc. Upgrades of the new version: ① the gain switch is moved from inside to outside. Its mini size makes it more portable and be suited for a variety of scenarios and Its alluminum body makes it strong and elegant. Customers can adjust its gain more conveniently; ② The circuit is optimized and the noise is lower.| Brand | Little Bear #ad |
| Manufacturer | Douk Audio #ad |
| Height | 1.1 Inches |
| Length | 4.57 Inches |
| Weight | 0.53 Pounds |
| Width | 3.15 Inches |
| Part Number | GFB986_B_New |
| Model | 6543849841 |
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10. Rockville
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Rockville BluTube 70W Tube Amplifier/Home Theater Stereo Receiver with Bluetooth
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Input impedance: 47ko. Due to this the amp sounds more like double the rated power! Built in bluetooth with 33 foot range. Signal-to-noise ratios/n: =86dB. Headphone output. Rockville blutube Bluetooth tube 70 watt amplifier/home theater stereo receiver.
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Input sensitivity: 300mv. 35 watts x 2 rms @ 4 ohm. Tube amps do not hard-clip even at high volumes and are extremely efficient. Bluetooth: 2. 1+edr. Usb: supports wav/mp3/wma/APE/FLAC. Rear speaker terminals: banana Plug/ binding post outputs for 2 speakers. Built-in preamplifier. Unit weight: 6. 6 lbs. Usb input for music files from USB thumb drive.| Brand | Rockville #ad |
| Manufacturer | Rockville #ad |
| Weight | 9.9 Pounds |
| Part Number | BluTube |
| Model | BluTube |
| Warranty | 1 YEAR |
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