Multiple audio inputs for different requirements: support Bluetooth 5.0 / USB(U-disk) / Stereo RCA connections, perfectly match with phonoes, TV, tablet, projectors, computers etc., support U-disk to play APE/ FLAC /WAV/ WMA lossless formats besides MP3; greatly improve the sound quality for your amplifier or active speaker. HIFI warm sound and replaceable tube design: default 6A2 tube to filter out the digital feelings and soften the sound to be warmer and sweeter, full and mellow with large dynamic; pluggable tube design, can be upgraded to 6*1N / JAN5725W / 6AK5 / EF95 for tube shaping and rolling and enjoy different sound styles. Separate tone control and input switch: besides main volume control knob, also with independent treble and bass knob to present amazing music with rousing hi.
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HiFi Electronic Tube Small Audio Power Amplifier DC 24V SA-90 Household Fever grade Gallbladder Amplifier U Disk Bluetooth
Aliexpress UK
T4 PRO tube preamp meets more HiFi needs: MM phono input, converts phono signal to line level signal, with low-noise integrated circuits and high-quality components to ensure clear and clean sound. 3.5mm AUX input, amplify the low level audio signal from your phone, tablet, PC, MP3 etc., easier to drive amplifier or active speaker and greatly improve the sound quality. Imported JAN5654 tubes and vintage warm sound: default comes with JAN5654 tubes, improves everything associated with your music such as detail, transparency, immediacy, richness, dynamic, tone etc., much better than 6J1 series especially in human voice. Pluggable tube socket for tube rolling and sound-shaping, easy to pick from and alter the sound signature to one's preference.
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Douk Audio TUBE-T4C HiFi Valve Tube Preamp Stereo Audio Pre-amplifier with Tone Control Treble&Bass
Aliexpress UK
Introduction T6PRO is a compact tube amplifier designed by Douk Audio, combining cool design with exceptional performance. Adopting a TPA3255 amp chip, the power output up to 300W for each channel can effortlessly drive 4-8Ω speakers, delivering impressive sound quality. With Bluetooth, 2 groups of stereo RCA and 3.5mm AUX inputs, 3.5mm AUX preamp output besides speaker jacks output, easily to build multi-channel systems. Besides common treble and bass control, super bass low to 20Hz is added to achieve shocking bass effects. A whole piece of cool dark VU meter is used with dual panels and pointers swinging in real-time with audio signal changes, to get both auditory and visual enjoyment.
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Douk Audio TUBE-T4C HiFi Valve Tube Preamp Stereo Audio Pre-amplifier with Tone Control Treble&Bass
Aliexpress UK
With 5 kinds of analog and digital audio input (Bluetooth 5.0 / USB / Coaxial / Optical / 2 groups of RCA), compatible with almost all audio devices such as MP3, phone, tablet, computer, CD players etc. to meet different needs of home audio systems. U-disk input supports lossless formats such as APE, FLAC, WAV etc., easy to enjoy HiFi music. Besides speaker output (4/6/8Ω), a low frequency output is specially designed to connect active subwoofer to build 2.1 channel audio systems, which can strengthen bass sound effects to bring more shocking experience just like in the cinema. With treble and bass control to bring more delicate sound according to your own listening style.
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Douk Audio HiFi Bluetooth 5.0 Valve Tube Preamp Stereo Receiver USB Player Home Desktop Pre-amplifier w/Treble Bass Control
Aliexpress UK
In full working order, some marks / scratches on the units, please see photos.
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Douk Audio T9 HiFi Magic Eye 6E2 Vacuum Tube Stereo Preamp MM/MC Phono Stage for Home Turntables Amp
Aliexpress UK
Unique and amazing combination: integrated ST-01 amplifier with VU meter into whole in such a mini size, the pointer dancing in the warm light with strong vintage feelings when enjoy HiFi music, dynamically decorates the audio system space. HiFi clear sound with tone control: resonable circuit and concise wiring, adopts vacuum tubes to soften the sound and filter out the digital feelings, sounds warm and sweet without noise. Also with treble and bass knobs to adjust one's own preferable sound styles, presents HiFi music with rousing highs and deep lows.
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Latest Electron Tube Preamp Reference American Poetry Drunk PV12 Conrad Johnson ECC82 6Z4 6x4 Preamplifier Power Amplifier
Aliexpress UK
RANK AExcellent condition, lightly used.
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Douk Audio P1PLUS Bluetooth Tube Preamp USB DAC Headphone Amp with VU Meter support DSD256
Aliexpress UK
Type: HiFi Preamplifier. M8 fever HIFI tube Bluetooth digital power amplifier, the power amplifier uses TPA3116 as the core chip, it can reach a modulation frequency of up to 1.2MHZ. Audio input: RCA input, 3.5 stereo input, Bluetooth input.
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Douk Audio P1PLUS HIFI Valve Tube Preamp with Bluetooth / USB / Coaxial / Optical IN Headphone Amp DSD256
Aliexpress UK