Douk Audio ST-01 PRO 200W Bluetooth Amplifier, 2 Channel Vacuum Tube Power Amp with USB DAC/Coaxial Optical Inputs/VU Meter/Treble Bass Control for Home Theater/Stereo Speakers (Upgrade Version)
| Country | USA |
| Brand | BenBella Books |
| Manufacturer | BenBella Books |
| Binding | Kindle Edition |
| ReleaseDate | 2017-04-18 |
| Format | Kindle eBook |