There's not much you can do with a simple bass volume control. But the master volume knob also increases the bass level, the problem is I use it on my desk and it means the main speakers are too loud when the bass is at a decent level. In this case, it is better to use an amplifier with an LFE line output for the bass and a separate active woofer or amplifier for the passive subwoofer. For reference I'm using the line level RCA output of an SMSL headphone DAC. Sound quality is good and it has plenty of power, but the fact that the bass volume isn't separated from the main volume is a deal breaker for me. I thought I would get the full bass range from THREE bass controls, but I don't. Also, I ordered this NS-14G Pro and got the standard version. I will be returning the unit as it doesn't do what I need it to do but will use other Nobsound/Douk products to complete my desk setup. I have one of their small 2.0Amp bluetooth boosters by the pool and it works great.
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