Slash4 Hi-Fi Bluetooth DAC & Headphone Amp – ESS Quad DAC ES9219, LDAC/aptX Adaptive, Optical Output – Upgrades Car/Home Audio to High-Res Studio Quality (Metal Navy)
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
19 left in stock
Arrives
Tuesday, Dec 16
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Features
- [TRUE HI-FI UPGRADE WITH ESS QUAD DAC] Unlike generic receivers, Slash4 features the premium ES9219 DAC. It transforms standard car audio into a high-fidelity system, delivering wider soundstage and richer detail (24-bit/96kHz) that cheap dongles cannot match.
- [SILENCE IS GOLDEN: NOISE ELIMINATION] Stop suffering from alternator whine and hissing sounds. Our advanced LDO regulator and isolation technology physically block power noise, ensuring a pitch-black background for pure music enjoyment.
- [TOP-TIER HIGH-RES WIRELESS] Fully supports LDAC, aptX Adaptive, aptX HD, and AAC. Experience lossless, CD-quality streaming from both Android and iOS devices with superior connection stability and minimal lag.
- [OPTICAL OUTPUT & HEADPHONE AMP] Features a unique Optical Output for interference-free digital connection to home DSPs/Amps. Also functions as a powerful portable DAC to drive high-impedance wired headphones directly.
- [DEDICATED CONNECTION FOR PURITY] Deliberately designed for single-device pairing. Slash4 prioritizes maximum bandwidth and stability for High-Res audio transmission, eliminating the signal degradation often caused by multi-point connections.
Brand: SLASH
Connectivity Technology: Bluetooth 5.1
Controller Type: Android
Special Feature: Isolated Power Noise Blocker, Noise-Free HD Audio, Smart Connectivity and Auto-Pairing, Top-Tier Bluetooth Codecs, User-Friendly Operation See more
Compatible Devices: Smartphones, Tablets, Laptops
Connector Type: USB Type A, 3.5 Aux, Optical Out
Audio Output Mode: Stereo
Surround Sound Channel Configuration: 2.0
Color: Blue Navy
Item Weight: 0.15 Kilograms
Product Dimensions: 2.83 x 0.86 x 0.51 inches
Item Weight: 5.3 ounces
Item model number: SLAH4
Wireless communication technologies: Bluetooth
Connectivity technologies: Bluetooth 5.1
Special features: Isolated Power Noise Blocker, Noise-Free HD Audio, Smart Connectivity and Auto-Pairing, Top-Tier Bluetooth Codecs, User-Friendly Operation
Other display features: Wireless
Color: Blue Navy
Manufacturer: DO
Date First Available: February 4, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Dec 16
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
A little expensive, but good sound and no static at all when used in my car.
Reviewed in the United States on May 31, 2024 by Zhen Li
I used many Bluetooth devices this one is the past automatically connect with not static great sound
Reviewed in the United States on May 2, 2024 by Amazon Customer
The housing is very much plastic and a somewhat cheap feeling plastic but the sound quality and power output is quite good. Little noise, clear audio, and it seems to be able to power even power hungry headphones with hundreds of ohms of resistance.
Reviewed in the United States on May 18, 2024 by Hua
This thing sounds great for the money
Reviewed in the United States on April 10, 2024 by Nick
The sound quality is really clean and clear. Does help with noise floor sound on my ford radio input. Sounds better than if I went direct phone to car radio. I do wish it also had a built in transmitter but I guess not enough space lol. It really has enough power to drive my dt990’s and sundara headphones and at this tiny package is pretty cool. It s pretty pricey but it did good for me.
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Reviewed in the United States on May 6, 2024 by Tony N
I was using my PC’s internal Bluetooth receiver and couldn’t figure out why apt-x wasn’t that good. It’s not like Bluetooth receivers tell you which codecs are being used. After some research I figured out, despite having a 5.1bt receiver, it was incapable of handling apt-x without the codec. Combined with the internal DAC, extra available codecs and Dolby atmos pass through, this receiver is capable of getting the most out of my expensive headsets. While I still use 2.4ghz most of the time, I’m able to use Bluetooth now with negligible latency compared to 2.4. The sound quality is better on this receiver but when using the lowest latency settings it’s comparable. Can be used for gaming, especially if you want to use your expensive audiophile headphones but really shines as a high end wireless audio receiver with a very large bandwidth. Little package but amazing product.
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Reviewed in the United States on April 21, 2024 by jeff
When I decided it was time to level up the audio experience in both my car and at home without committing to an expensive overhaul, I found the Slash4 Hi-Res Hybrid Bluetooth Receiver. It promised an easy upgrade and delivered beyond expectations, all in one super compact package. The advanced noise isolation caught my attention first. The isolated DC/DC converter truly blocks out power noise sources, creating a pristine audio environment that's immediately noticeable. Pairing the Slash4 with my smartphone was a breeze, thanks to its smart connectivity. The automatic re-connection feature is fantastic, removing the hassle of manual setups every time I get back in the car or walk into my living room. And I love how tiny it is! It's a testament to how a small, intuitive device can make a massive difference in sound quality, bringing out the best in your music collection. If pristine sound, ease of use, and smart functionality are what you're after, then the Slash4 is the way to go. It's a great upgrade that won't break the bank. Highly recommend!
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Reviewed in the United States on April 8, 2024 by CJM
I don't have many complaints about this little DAC. It sounds amazing, has a wide range of supported high-quality codecs, and just works without any fuss. The sound quality is very clear, in a way that just makes each individual instrument easier to pick out from the others. Bass is especially solid and clean. There's not much else to really say, it's just very precise but easy to listen to, especially when using LDAC. It compares really well with my Fiio BTR3. It's a shame that Slash didn't add the ability to use this as a USB DAC. I really wish they had, it would have made this product absolutely perfect. Note that there's no microphone on this device; given this is for music, I don't miss it. Physical construction is also quite nice. It's fairly large, but a rounded shape. I also quite like the blue. These are of course secondary to the actual sound quality, but it's good to see there was some attention paid here. Displaying the codec by status LED color is a nice touch, although it does blink green annoyingly when connected but no music is playing. The included 3.5mm audio and mini-TOSlink cables are also very high quality. I didn't get a chance to test the optical digital audio output, as I don't currently own anything with that as an input. Given how good the built-in DAC is, I don't think I'm missing out. Overall, a very impressive bit of kit. The price is quite steep compared to other 'generic' bluetooth adapters, but the sound quality increase due to better codec support and a high-quality DAC makes a solid argument for the cost. For in-car use, it may be overkill when competing with road noise and such, but for home with some good speakers... excellent! I just hope Slash will add USB audio support in the next iteration to round it off.
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Reviewed in the United States on April 24, 2024 by Kasey