B2 Audio Black 4v 10 Channel DSP with Bluetooth iOS/Android App 96 KHz - 32 Bit

Solid dsp. No distortion noticed yet, no popping on start up. Definitely a lot of bang for your buck with this little guy, 6 in 10 out is great. With the app it's simple to configure and pretty straight forward. Hardware wise looks solid but the 12v,S,ground terminal could be a little more solid. "Update: seems cheap due to it being removable, didnt know this at the time" Its nice the bluetooth antenna is removable as I had a extension flat antenna from an old headunit that I ran to the front of my cab, though I probably didn't need to. The app is fine. Works best in landscape but will work in portrait mode, but kinda crams everything together. Only reason I bring it up is my andriod headunit is in portrait mode and that's where I config the app. But worse comes to worse I can use my phone. Toslink in would be a great addition to the next version but rca is fine. A actual manual would be nice The reported voltage is about 1 volt lower than real voltage. Thank you B2, solid DSP you guys have here. Update: Definitely some boom noise randomly when it turns on. Pop. I hate the apps eq setup. Hard to select the frequency with out altering it. Use a s-pen or bring it as all the way down then back up to the level you want. Wish the channel eq could be copied to another channel like the crossover settings. Still happy with the dsp after a few months.

I purchased a B2 DSP box from Amazon and immediately ran into programming issues. I called tech support over a dozen times in one week, and customer service could neither answer basic questions nor reach a technician or installer. This wasted hours of my time. Eventually, a separate A/V professional helped me and discovered one output channel was bad. This was on top of unresolved programming problems—simple things like EQ and crossover settings not saving and constantly resetting—which support never explained how to fix. I returned the unit and was charged a $47 “restocking fee” on a $116 product. They claimed there was a scratch (there wasn’t) and that a small piece of foam was missing. They also stated they found nothing wrong with the unit, which is hard to believe considering they couldn’t even get a tech involved during my week of support calls. There’s no way the bad channel was properly tested upon return. This product and support experience wasted countless hours on my build. I will never use their products again. Way to go, guys. Big Jeff Audio = garbage treatment.

This 6 input in and 10 inputs out is amazing and not just for the price. If I upgrade 4 channel amp and add more speakers I’m basically set with this DSP. The app is easy to use but does require for you to enter password every time you connect it. When getting out of the app and returning to the app. It creates white bars on the sides of the app and you can’t see some of the menus on IOS phones. Setting EQ for individual channels, Gain, Delay and crossovers is super easy. Comes with no instructions but just watch some YouTube videos and you’ll see how easy it is. I feel like everyone complaining is just tech challenged, phone challenged or have sausage fingers. There is nothing complicated about this user interface. That there are better options is not the point. Because they also cost a lot more. So for this price point if feels like it’s a steal as long as your not smartphone challenged.

UPDATE & PSA: if your Sixten starts randomly muting itself for no apparent reason when driving or even starting the car, download the firmware update from B2audiousa - it was hard to find but fixed the problem immediately. Also FYI the sixten android app is old, use the B2audio DSP app it is newer and doesn't crash!!! So far I really like this DSP but it has some easily fixable quirks that annoy me, not enough that I would consider another DSP in this price point however. YOU NEED TO KNOW WHAT YOU ARE DOING, there are no presets or magic profiles that will get you started - this is a tool for audio tuning and you need to understand phase, EQ, crossovers and how they behave and especially time alignment. Tip you can use grok or other AI tools to calculate time alignment for your car speaker positions as a starting point. IF YOU KNOW WHAT YOU ARE DOING you can make things sound amazing. The bad: The Channel EQs are very fiddly and for some reason you cannot simply copy one channel to another you must manually configure each channel which is very time consuming and inprecise with the controls provided. YOU can dial things in very incrementally if you key in the frequency, Q and DB+/- on a band, then swap to the 2nd channel and make the same adjustment to the same band it helps a bit but this could be ALOT better. Make sure you leave some headroom on channel Gain if you are adding DB to EQ bands to avoid distortion, or cut instead. The channel EQs have about 10 bands more than they really would ever need making them very cluttered. I would suggest allowing us to specify how many bands we want to simplify this and allow copying channels like you can with crossover settings. The app will not remember the connection for the DSP and you must manually connect to it each time you turn the car on to make adjustments and it can often drop connection for no apparent reason.....it wasn't seriously disruptive to tuning process but was annoying and seemingly this could easily be fixed by saving the connection profile in the app and having it connect automatically - its mind boggling why the developers haven't implemented such a simple concept. Time alignment when set with MS sometimes rounds up or down 1/100th of a MS for no apparent reason when storing profile but its not a significant hinderance. If you are planning to connect to this via Bluetooth I was only able to use SBC when testing and it did not seem to support aptx or LDAC standards etc.... which is disappointing but I am using RCAs and I didn't fiddle with it much. With some software improvements this could be a perfect DSP the hardware seems reasonably solid. The power connections are a little dinky but work well enough.

Not used yet looks good

Did not power on at all. Everything connected amps had power, went over all the wires again even tried rotating the wires to terminals.