Researched from named sources, honestly ranked. Search the library, or browse a category and its product types.
Douk Audio P6 MINI Bluetooth Tube Preamp — read reviewA palm-sized tube preamp at $49.99 with Bluetooth 5.0, USB-disk and stereo RCA inputs, a 6A2 tube stage, separate treble and bass knobs, and an input selector to end cable swapping.
Nobsound Q3 Mini USB DAC Headphone Amp — read reviewA $52.99 desktop DAC with plug-and-play USB, optical and coaxial inputs feeding RCA and 3.5mm headphone outputs, built on SA9023, CS8412 and 97220 chips with NE5532 tone shaping.
Nobsound Q4 Bluetooth USB DAC (192kHz) — read reviewA compact desktop DAC with Bluetooth 5.0, PC-USB, U-disk, optical and coaxial inputs feeding RCA and headphone outputs, with treble and bass knobs and a mirror-finish metal case.
Douk Audio SP102 Passive Audio Selector — read reviewA fully passive speaker and amplifier selector: no power supply, no signal loss, just a mechanical toggle between two amps or two speaker pairs at up to 200W per channel, with an OFF position that mutes.
Douk Audio ST-01 PLUS TPA3255 Amplifier — read reviewA mini TPA3255 amp with Bluetooth 5.2, an MM phono input for turntables and a dancing analog VU meter. It is headlined at 300W per channel, but the store's table gives 78W at 4 ohms on the 32V/5A adapter.
Douk Audio T12 Tube Phono Preamp (MM/MC) — read reviewA walnut-cased tube phono preamp for MM and MC turntables with a 120V-driven 6J5B-Q tube stage, +/-10dB bass and treble sliders, dual RCA outputs and a headphone jack.
Douk Audio T4 PLUS Tube Phono Preamp — read reviewHandles both moving-magnet and moving-coil cartridges through seven switchable input impedances, adds JAN5725 tubes and a front VU meter, and drives 32-300Ω headphones.
Douk Audio T7 7-Band Equalizer Preamp — read reviewA desktop 7-band stereo equalizer and preamp with true balanced XLR and single-ended RCA inputs and outputs, 64Hz-8kHz band control, and a bypass mode for comparing processed and original sound.
Douk Audio T9 6E2 Tube Preamp MM/MC Phono — read reviewA vacuum-tube preamp and MM/MC phono stage with magic-eye 6E2 level tubes, RCA and phono inputs, tone controls, and a 3.5mm headphone output.
Douk Audio TUBE-T5C 4-Way Tube Preamp — read reviewA mini tube preamp that doubles as a 4-way RCA source selector, splitter and headphone amp with a glowing VU meter. Its isolated tube stage runs at 180V, and the headphone output delivers up to 500mW at 32 ohms.
Douk Audio U10 Tube Headphone Amplifier — read reviewA mini tube headphone amp that doubles as a preamp: 3.5mm and RCA inputs feed dual 3.5/6.35mm outputs rated at 1100mW to drive 18-600 ohm headphones, with pluggable 6A2 tubes and op-amps for rolling.
Douk Audio U3 Class A Headphone Amplifier — read reviewA $36.99 mini headphone amp whose output transistor runs in pure Class A from a boosted 26V rail, delivering 1300mW or more into 32 ohm with a pluggable NE5532 op-amp for DIY rolling.
Douk Audio U3 PRO Class A Headphone Amp — read reviewA palm-size Class A headphone amp that boosts a DC 5V supply to ±14V internally and outputs up to 1500mW into 32 ohms. RCA and 3.5mm inputs feed 3.5mm and 6.35mm jacks for headphones from 18-600 ohms.
Douk Audio U5PRO 4.4mm Balanced Headphone Amp — read reviewA fully balanced desktop headphone amp that runs its output stage at ±14V from a plain DC 5V supply, delivering up to 1500mW into 32 ohms. XLR inputs feed XLR or 4.4mm balanced outputs for 18-600 ohm headphones.
Douk Audio M1 PRO Bluetooth Amplifier 160W — read reviewA 160W x 2 desktop amplifier with TDA7498E power, Bluetooth 5.0, RCA and U-disk inputs, tone controls and a low-frequency output for an active subwoofer.
Nobsound G2 PRO 300W Mono Digital Amplifier — read reviewA 300W mono class-D amp on the TPA3255D2 with a subwoofer/full-range switch and adjustable 40-300Hz cutoff; the base option has no power supply.
Nobsound NS-10G Bluetooth Amplifier 50W+50W — read reviewA palm-sized TPA3116 amplifier rated 50W x 2 with Bluetooth 5.0, USB and AUX inputs, a dedicated bass boost button, and an aluminum case weighing just 105 grams.
Nobsound NS-15G TPA3116 Amplifier 100W+100W — read reviewA 320g mini amplifier with dual TPA3116D2 chips rated at 100W+100W, Bluetooth 5.0 input reaching 50ft, treble and bass knobs with a tone bypass, all in a CNC-machined aluminum case.
Douk Audio M4 Bluetooth 4-Channel Amp 50W — read reviewA four-channel digital amp quoted at 50W per channel for multi-room or four-speaker setups, with Bluetooth 5.0, dual RCA and U-disk inputs and per-channel volume.
Douk Audio Brass Turntable Platter Mat (2mm) — read reviewA 1.2kg H59 brass platter mat, CNC laser cut to 293mm with a 2mm profile. It aims to resist static, damp resonance and rumble, and sharpen mid and low frequency definition under the record.
Little Bear MC3 3-In-3-Out XLR/RCA Selector — read reviewA passive switcher with two stereo XLR and one stereo RCA input each way, converting between balanced and unbalanced so you can compare sources or amps.
Little Bear MC103 PRO XLR Passive Selector — read reviewAn all-XLR passive splitter sold in two versions: 3 inputs to 1 output or 1 input to 3 outputs, so you can switch sources or compare three amps.
GE 7-Pin JAN 5654W Vacuum Tubes (Matched Pair) — read reviewA tested and matched pair of low-noise, US-made GE JAN 5654W 7-pin tubes — mil-spec stock that drops into 6AK5, 6J1, 6J1P and EF95 sockets as a premium upgrade.
Nobsound NS-01G MAX Amplifier 100W+100W — read reviewA super-mini TPA3221 amplifier rated up to 100W+100W under a 24V/8A supply, with Bluetooth 5.0 and AUX inputs and a pre-out for subwoofers, active speakers or a second amp.