🎶 Unleash Your Sound: Transform Any Space into a Sonic Wonderland!
The DROK Blue~Tooth Board is a versatile audio receiver module designed for DIY enthusiasts. It supports a wide input voltage range of 5V-12V and features Bluetooth 4.2 technology for seamless audio streaming. With multiple input and output options, including 3.5mm AUX, this compact device is perfect for enhancing your headphone or home stereo system.
G**.
5-stars, no complaints
I am a purchasing consumer reviewing a product I purchased. I am not receiving anything for posting this.5-stars easy. No complaints, I bought twoSome of the reviews below state this board is a 24-35V device. It uses a GH27G / AZ1117E power input chip, that's only designed for 13V max. I STRONGLY DOUBT this device can withstand over-voltage by a factor of 2x-3x. The Amazon product description seems correct at 12V. Disclaimer: I only power mine with a standard 5V micro USB cable. I haven't actually tried it at higher voltages.[5/8/25] 2 Month review.I stand by everything posted below. After 2 months this BT board has been absolutely bomb-proof reliable. I use it every night, all night to listen to relaxing music and fall asleep. The BT radio has never dropped out or dis-connected from my old iPad. The analog side of the circuit has been just as reliable. Outstanding.[3/21/25]After several more days/nights of critical listening I stand by all my initial impressions below. I don't know if its component burn-in or what but something slightly "bloomed". The sound image is more layered now compared to a Y-RCA cable straight out of the ipad headphone jack. The harmonic content surrounding notes, room acoustics and ambience in recordings seems slightly more distinct now. The sonic differences between L/R Multi-tracked instrumentation are a little bit clearer and easier to hear. There also seems to be more energy at the extremes of the sonic spectrum. Below ~45Hz is bloomier and more resonant. Above ~6K seems more delicate, articulate and refined. The difference is very slight mind you, maybe an ~8% perceptional difference (if that). It's (honestly) probably just my hearing perception adjusting and picking it up for the first time.This is my finding with all my headphones, none of which are commonly known to be high-detail revealing. I am going to dust off my old AKG K701 and Koss A250 today and give a listen with those. Those are my most analytical / accurate headphones. FWIW I am not a 100% believer in electronic component "burn-in". I know for me personally my hearing perception sensitivity can vary greatly. I am a STRONG believer in blind A/B listening tests, and that's really the only way to validate my impressions. The eyes can strongly influence what the brain / ears hear. I attached a pic of my electrical tape mod to help dim the blue flashing LED.The instructions have an illustration with headphones plugged directly into the TRS output jack. I tried that and it was awful. Probably a gross impedance miss-match with lower Z cans and IEMs, and a severe power deficiency with my 300 ohm HD650. I would only use this as a line-level device.[3/13/25]I power with a micro-USB plug. Plug into my Larocco PPA headphone amp with a cheap RCA "Y" cable. I use an ipad as BT source for ALAC and 320k mp3 files. Absolutely no issues what so ever after 3 nights of critical listening. The circuit is "black background" silent. No hiss, no hum, no clicks/pops or digital artifact noises of any kind regardless of ipad volume setting. No radio frequency noise / interference either. Sound quality seems to be well balanced no offending boost or cuts to the sonic spectrum. It is a very "dry / uncolored" sounding circuit when used as a line level device. I A/B compared it with a plain "Y" cable out of my ipad... and I really could not hear any significant sonic differences. These impressions were made using sennheiser HD650, Koss KSC75, Grado HF-1, Truthear Zero Red, JBL T110. Frankly I am pleasantly surprised. BT connectivity / reliability has been solid... as reliable as the cheap RCA-Y cable it replaces.I bought two of these so I could use my headphone amps with BT. This will help reduce some of the wires and clutter on my desk and nightstand. I will probably mount one in a small project box and just use a micro-USB plug for power. The second one I think I can squeeze in the second amps enclosure, and tap into the 12V DC part of the circuit.The blue LED is CRAZY bright at night. I cover it with a small piece of black electrical tape and it helps. I wish it were the opposite, solid ON when connected to BT and flashing when waiting to be paired. But that's not nearly major enough to take away a star.Reliability of course remains to be seen.I will post dated updates to this review as my opinions change.
L**A
Really Great
I’ve been using this Drok Bluetooth audio module for a few days now, and it’s been working great. It connects easily to my phone and the sound quality is solid for what it is. I installed it in a 10-year-old Makita jobsite stereo that originally had no Bluetooth. I wired the audio output directly to the radio’s internal AUX input by tapping into the 3.5mm jack PCB—worked perfectly and kept the install clean.For power, I tapped into the battery connection PCB and added a bulkhead rocker switch on the side of the radio to turn the module on and off independently. The stereo runs on a 20V Makita battery, and even though the module’s cut sheet says 12V (with the website claiming 27V max), it handles the 20V just fine. No issues with overheating or instability.I mounted the board inside the radio using hot glue. It’s been sitting out in the sun during use, and while the top of the radio gets warm, it doesn’t get hot. You can tell the module is inside doing its job, but it’s not stressed.The board itself feels like a higher-quality unit than many of the cheap Bluetooth modules out there. The PCB is clean, the build is solid, and it even comes with documentation—which is rare. It seems like buying a single unit results in better quality control. Honestly, if I had bought a two-pack, I’d half expect one to fail and just use the backup. But this one has been reliable from the start.Overall, I’d recommend this module if you’re upgrading an older stereo or building a basic portable Bluetooth system. There are much higher-end DACs out there for home audio, but for portable or jobsite use, this is a great solution that works well and sounds good.
T**N
Good little module
I bought the module to install in my old BOSE Acoustimass system.I was able to tap the +15V power rail in the Bose system to power it.Connected the supplied connectors and cables to the Preamp input and closed up the unit.Set the tone controls neutral and the volume to about 3/4When the system is turned on the Bluetooth unit automatically goes into pair mode, making it easy to pair the unit to just about anything.When it pairs I hear a notification tone through the unit and then I'm ready to go.The reason for 1 star off is when the unit is not receiving any music or Audio, you can hear digital noise / buzzing in a silent room, coming from the speakers. So the Bluetooth communications are being picked up by the amp section. This may be avoided with better shielding between the BT module and the preamp section, which I may try later. You can't completely shield the BT module because the built in antenna is mounted on the board. However you can add an external antenna using the U-FL connector on the board. Relocating the Antenna to a different place may help with the noise.Other than the digital noise in complete silence, the unit is great and the overall sound quality is good.I'm happy with the unit.BTW adding a microphone to the Built in 3.5mm input jacks will make the BT module a handsfree phone system as well.
A**O
Add BT to your vintage car radio.
Bought this board to add BT to my vintage 70s 8-track car stereo. It is not specified on the reviews or the specs, but it has a switcher that automatically bypasses the sound from the input to the output when BT is disconnected from your device. So my 8 track stereo functions 100% as original but when I connect my phone, it automatically switches to BT and I stream music. I achieved this by intercepting the preamp output going to the volume control on the car stereo. It takes a bit of research and knowing how to read a schematic but it is a great solution for a DYI for very little money.
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