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Reviews (26)
Jul 09, 2018
Works great.
Includes FM tuner and memory card slot. The next and back buttons make it convenient when listening to music on my phone. Equalizer only functions in bluetooth mode. Plan on incorporating device in home made portable bluetooth stereo system. The only complaint is that the mode audio prompting is in Chinese. Really not that much an issue as device is self setting, just connect power and audio output, pair bluetooth and play your music. It also has standard bluetooth capability and will automatically mute music when you receive a phone call. It's a great device for you do it yourself'ers.
Feb 26, 2018
Hiland Original power supply
Being apprehensive from the complete failure of the first power supply I went ahead and purchased this one in hopes that it would work. I took the usual care in assembly but this time I replaced the 1N4148 and 5.1 volt zener diodes with one's from my local Radio Shack. I also removed a couple windings from the secondary of the transformer to lower the output voltage from 27 volts to approximately 24 volts. Verified primary amp draw still within specifications and connected it to input terminals of power supply and plugged in transformer. To my delightment, it worked great. The supplied potentiometers especially the voltage control gave very coarse adjustment and it was difficult to dial in an exact output voltage. This issue was resolved by replacing them with 10 turn potentiometers which gave very precise of voltage and current limit adjustment. The 10 turn pot is not really required, but I got a good deal on them so I went ahead and replaced both. I then installed power supply in my project box along with a buck converter to power the digital volt amp meter and a separate power supply to power buck converter and 12 volt 60mm computer fan. Added some switches and binding posts and wha la, I now have a fine bench power supply. I then calibrated the voltage meter to match my Fluke 16 multi meter and connected 100 ohm 20 watt resistor to calibrate the amp meter. In conclusion, I'm pleased with the performance of this inexpensive power supply. It should fill all of my project designing power needs. Now on to the next project.
Apr 22, 2019
DS18 equalizer
Using this equalizer on my home made bluetooth stereo system. It's being powered by a 12v 5 amp switching power supply. It makes my 400 watt stereo system sound fantastic. I'm very impressed with the performance.