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Review on Nobsound G2 PRO 300W Hi-Fi Mono Subwoofer Audio Class D Power Amplifier for Optimal Sound Experience by Jessica Breaux

Revainrating 5 out of 5

Inexpensive mono amp

I've only been listening for a couple of hours so far, but maybe that's enough to get me thinking. Unlike most who seem to buy it as a mono amp for subwoofer amplification, I intended to buy two of these amps to use as mono amps for the left and right stereo channels. I've always been curious about the advantages of mono amps over stereo, and these amps offer an inexpensive way to experience that. These amps have added amazing features to my constant collection of top quality Chinese products. I expected the performance to be higher than the price and these mono amps live up to the expectation. The overall assembly, switches and connectors are of high quality. Setup was easy and started in less than 10 minutes. I simply connected a Bluetooth DAC, an FX Audio X6 and another expensive component to my vintage tube preamp, then connected the left output of the preamp to the left input of a mono amp and the right output to the right input of the amp. Other. After connecting the speakers, I set the mode to PBTL on both amps and was good to go. A preamp probably wasn't necessary, but I thought it would be nice to add some tube warmth to the experience. At some point I might remove the preamp from the circuit to evaluate the mono amps myself. My first impression was that the sound was very average with good highs. The bass sounded very muffled, which was noticeable given the bass capabilities of my Tekton Lore speakers. After about half an hour, however, the perch began to bloom. They might need time to warm up or charge the capacitors, but now these amps really sounded full range. Clarity, separation and dynamism were evident. When turned on at about 1/3 the volume, the volume filled the entire room. Given that these speakers only require a watt or two to operate, these amps are far more powerful than they require, which brings me to my next point. Advertisement for this special The power supply can only deliver 160 watts and that into a 4 ohm load. I'm not sure how this translates to 8 ohms, but the performance isn't the limit for my purpose. Being a Class D topology, these amps can be left on for hours and only feel slightly warm. I suspect these amps only get close to 100W, which is still more than enough for my high power speakers, especially since one amp is dedicated to the left channel and the other to the right channel. These amps deserve attention. compared to my Aragon 200 watt Class AB amp from the 80's, despite the fact that some may scoff at the Class D performance. I suspect the Aragon amp will sound a bit more refined, perhaps warmer and fuller , where Nobsounds could be thinner, but this amp was many times more expensive and very heavy. I am skeptical that the accuracy is many times higher. As of this writing I am very happy with these mono amps. Time will tell how well they hold up, but I haven't had any problems with other Chinese components for a long time. Comparing these amps to vintage Class AB gear will have to wait. I like these mono amps too much on their own to waste time comparing them now. Update 12/26/20: I have since bought a Nobsound 6p1 tube amp, also with positive results. While the 6p1 is more expensive than a pair of G2 Pros, it represents a lot of value for a true Class A tube amp. However, I decided to give the 6p1 a break and plug the G2 Pro back in. Even compared to a hand-wired Class A tube amp, the G2 Pro still delivers the same impressive and equally satisfying sound. They sound more broken than before and convince over the entire sound range. I continue to be impressed with the products from Nobsound/Douk Audio, both tube and solid state. I still haven't compared them to vintage or more expensive gear, but I think I'll have to listen very carefully to tell the differences.

Pros
  • Many will do
Cons
  • Some difficulties