Douk Audio
The available web results for Douk Audio list several distinct amplifier models rather than the specific “HiFi Stereo Bluetooth 5.0 Vacuum Tube Amplifier MM Phono Amp.” Models include the ST-01 Pro tube amp (no Bluetooth), the budget Class D A5 amp, the Bluetooth 5.0 digital M4 (50 W × 4), and the X1 tube power amp that adds Bluetooth capability.
How It Compares
Among the Douk Audio lineup, the ST-01 Pro offers pure tube amplification with ±6 dB treble/bass control and low THD but lacks Bluetooth. The A5 is a low‑cost Class D amp with an adjustable high‑pass filter, also without Bluetooth. The M4 provides a modern Bluetooth 5.0 digital solution delivering 50 W per channel and very low THD, but it is solid‑state rather than tube‑based. The X1 appears to blend tube warmth with Bluetooth connectivity, positioning it as a hybrid option for users who want both tube sound and wireless streaming.
Current
$117.31
Average
$140.05
Lowest
$117.31
Highest
$308.03
Lower = better sales rank
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