4 Channel Bluetooth Amplifier, 50W x 4 Audio Power Amp, Hi-Fi Home Stereo Speaker Receiver [Douk Audio M4]

Works perfectly with my BST-1 bass shakers. Individual volume controls are ideal for fine tuning haptics. Some say the speaker connectors are too close together but all that's required is to tin the ends of of the wires to prevent fraying. Small form factor makes mounting or finding enough room for the unit a breeze. Highly recommend.

使用方法は用途とは違いますが、４スピーカーそれぞれ音量調整をしたかった。 アレクサでラジオを受信し、各部屋の広さに合わせて音量をコントロールしてます。 モノラルの音源になってしまいますが

Super for what it is and what it does. I connect for spekars at about 40 volume and that is enough, alao being class D its super silent and fast. Use only provided power source please. However be aware there is no freq control, only volume.

Shipping and delivery from Douk Audio very fast and painless. I'm using this to drive bass shakers on a Sim Rig. I was uncertain about the connector as this isn't (or doesn't seem to be; the feature descriptions are ambiguous) a USB sound card, but it installed easily and perfectly as a Bluetooth audio device which turns out to be much easier than yet another USB connection on the rig. The build quality is really impressive at the price and it works well and feels very robust. I was using the other well-known and popular brand cheap little USB 2x50W solution - had no problems for a year then mine failed and its replacement failed for no clear reason. This solved the problem and has given me the extra channels to add a couple more shakers when budget allows.

This amp is an absolute beast! I'm using it in my 1600 sq ft shop with 4 speakers mounted in each corner, and let me tell you - it will absolutely rock the entire place out! The power this thing puts out is seriously impressive. One of my favorite features is being able to adjust each channel's volume individually. This gives me perfect control to balance all four corners of the shop and get even coverage throughout the space. The Bluetooth range is surprisingly good too - I can move around the entire shop without any dropouts, which is exactly what I need when I'm working. I've been running it with 2-ohm speakers and it handles them beautifully at around 75% volume with no distortion or heat issues. Plenty of headroom for when I really want to crank it up! There are a couple of small quirks worth mentioning. The speaker wire terminals are a bit finicky to work with - they get the job done but aren't the most elegant design. Also, the channel numbering is counterintuitive with channel 1 on the right and channel 4 on the left, rather than going left to right as you'd expect. You get used to it quickly though. Despite these minor issues, this amp is perfect for my shop setup. The power, flexibility, and wireless performance are exactly what I needed. Highly recommended for workshop or garage setups!