Review on 🎧 HiFi Mini Vacuum Tube Preamp with Bluetooth 5.0, USB Player, Stereo Audio, and Headphone Amplifier by Brinson Quarterman

I was skeptical to buy without reviews but I tried. Sounds really good and the Bluetooth connection to my iPhone is solid. It's a bit noisy/static/crackling when it's first turned on for a minute or so, but it might be a weak tube thing, but after it's warmed up it gets solid. If it lasts, I'll buy better quality whistles. The only negative, and I knew this in advance, is the lack of a volume control, but the buttons and remote control work well, I hope they hold up. I checked several MP3s on a flash drive, it works without any problems. Very happy with the purchase and may try some other Douk products. I'll update in a week or two to see if everything works.