Douk Audio P2 Mini Bluetooth 5.0 Tube Preamp and USB Player Review

The Douk Audio P2 is a mini tube preamp priced at $73.99 that also works as a headphone amplifier and a digital music player. It sits between your sources and your amplifier or active speakers, adding vacuum tube character to whatever passes through.

Inputs cover Bluetooth, stereo RCA, U-disk and TF card, and the listing says it is compatible with iPods, phones, MP3 players, TVs, CD players, laptops, desktops and streaming players. Outputs are a stereo RCA pair and a 3.5mm headphone jack, and the two can output at the same time. As a player, the U-disk and TF card slots read MP3, WMA, APE, FLAC and WAV files up to 32GB with no driver required, and a full-function remote handles operation from across the room. One caution from Douk Audio: the USB interface supports U-disks and USB 2.0 thumb drives, not a PC-USB connection.

The tube stage is designed to filter digital harshness from common sources, and the default tubes are now American 6186 or 6AG5 units (shipped at random since 29 May 2024, at the same price) in place of the original 6K4. The sockets accept 6J1, 6J4, GE5654, 6AK5 or 6*1n tubes if you want a different flavour. For tone, an NE5532 op amp handles separate treble, mid and bass adjustment, and the op-amp socket is pluggable so other chips can be swapped in. The aluminium case is black with power and input indicators, and the listing is clear on two limits: the P2 cannot drive passive speakers, and it should not be connected directly to a turntable.

Douk Audio ships worldwide with free and expedited options whose cost depends on the destination country. Orders under 2kg travel by airmail (10-25 days) and anything over 2kg by DHL, UPS or FedEx (5-8 days). Import duties and customs charges are the buyer's responsibility. All items carry a 30-day free return or full refund and a 1-year warranty, with exclusions for orders placed by mistake, man-made damage or misuse, a subjective change of mind, and anything else outside the warranty terms.