AIYIMA B07 Bluetooth 5.2 Verstärker TPA3255 2.1 Kanal Subwoofer Verstärker 300Wx2 300W für Home Desktop Bücherregal-Lautsprecher Subwoofer Mit Hilfsstromversorgung&Bass-Höhenregler

I was tidying up my parents house and I noticed they still had the old speakers and subwoofer that we used to use there 20 years ago and I thought how would I bring that setup up to date.Since, I have a simple streamer (WiiM Mini) and my sister also wanted to use her phone to stream Bluetooth music, with these in mind and I went to investigate what I could get to suit everyone and given my previous experience with Aiyima Ampliifers (I still have the rather excellent Aiyima A07 MAX that I bought previously for my own house) the B07 seems liked a logical choice.After using the B07 for a week or so with these old speakers and old passive subwoofer. I thought I would share why I think this is an excellent product if you happen to be needing to update your setup and have some old speakers lying around. So the B07 is mainly for a passive speakers and subwoofer, though I think technically it would work with an active subwoofer (using the Aux output). So a passive subwoofer is one that uses speaker cables not an RCA cable and it is therefore powered directly by the B07 and doesn’t need to be plugged in separately.In summary, if you happen to have a passive subwoofer and some nice bookshelf (or even floor standing speakers) the B07 is an excellent choice with that typical clean and natural TPA3255 A07 like sound quality. While the controls available might seem a bit daunting initially, the fact that they are all there and can be used together is a great advantage, though once you get it setup I would almost hide away the B07 in case people try to change the settings, so best to use a streamer (like a WiiM Mini / Pro Streamer ) or the built in bluetooth capabilities to control the sound of the B07.For me the key features you get with the B07 are as follows:1. 3 different inputs:RCA with the WiiM Stream connectedAUX-In with a turntable (with built in pre-amp)Bluetooth from a smartphone.2. TPA3255 chipsetThis is the main chipset you want in any of these cheaper Amplifiers and the B07 like the original A07 (and other variants) has this for chip for a very natural sound.3. Tone controlsThis in my opinion in crucial especially with older speakers, having the ability to tune both the bass and treble means issues like ‘dull’ sounding speakers can easily be fixed.4. Subwoofer controls – see below5. Supplementary Power supplyDepending on the size of your passive subwoofer Aiyima have provided the option of a separate power supply, I imagine this helps with very large subwoofers (or even for hobbyists building their own subwoofers) but for me it wasn’t required for a small room setup the supplied 48V5A power supply was good enough.But there are many good amplifiers (especially with TPA3255 chipset) that have similar capabilities what sets the B07 apart is the passive subwoofer support and the level of control you get so I had to do a bit of research into this before I purchased the B07 and I thought I would break down the advantages and disadvantages:Advantages of passive subwoofers (and the B07):1. Only a single cable needed for the subwooferSo you connect the subwoofer via the SUB out ‘binding’ posts on the back of the B07 – this can mean more flexibility in the placement of the subwoofer.2. Controlled directly from the AmplifierGetting the bass right in your room is one of the most difficult things in Audio but using a subwoofer with lots of controls is one of the easiest ways to get quality bass. Simple move the subwoofer around a little and using the various dials related to the SW output on the B07 to get the best quality audio output. E.g. you can control the subwoofer volume separately to the tone controls .e.g. Subwoofer adjustment range: ±4db and3. High pass filter controlThis is often on the back of an active subwoofer but It think having this control on the front of the B07 makes it easier to tweak to preference e.g. between: 50-220HZDisadvantages of passive subwoofers:1. Preamp control i.e. Bass ManagementSo in a more complicated setup you might want to use a preamp with built in Room EQ or both high pass and low pass filters to separately control the audio going to the amplifier and powered subwoofer.2. Simpler AmplifierAdding the controls for the subwoofer to the amplifier makes it more complex and you can see in the pictures that the B07 has lots of dials which once you have setup your room you probably won’t want anyone touching.3. DSP Control within the Active SubwooferMuch more expensive active subwoofers try to look after their own bass response using clever DSP technologies (and typically a ‘companion’ mobile) application.4. Amplifier needs more powerSeparate subwoofer can require allot of power, so its nice that the B07 has a separate optional power supply should it be needed.Overall, I think if you have a passive subwoofer this is the best amplifier you can get. [...]