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K.T.N
1264
Oct 2, 2016
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Funny thing happened on the way to music.
I got this in the last drop at the end of 2015. I've been so busy, I only recently had a chance to set it up. And it's now the beginning of October, 2016.
Well, not according to plan. When I plugged everything in, all I heard was a loud oscillation, about 3 Hz, pumping through the phones. Yikes! This was regardless of the input, or whether any source was plugged in or not.
I was bummed.
But realizing that so much of this amp relies on Op-Amps, I cracked it open to see if I could troubleshoot it.
Well, haha, one of the Op-Amps was installed backwards. It wasn't the amplifier Op-Amps or anything on the DAC, but rather a single 8 pin Op-Amp that's probably in the power regulation circuit.
I installed it the right way, and everything worked. Thank goodness!
I'm a little ambivalent about the O2 amp.
On one hand, the sound of the amp is a little too clean and neutral for my taste. I'd rather get a Gustard H10, which is a rich, complex sounding amp, and pay a little extra for an outboard DAC for a more musical experience. Of course this is significantly more pricey, but as a long term solution, it makes more sense for my tastes.
On the other hand, the O2 sounds satisfying enough, and has a really easy, no-fuss kind of vibe to it. Just plug in and get very solid performance from it.
It's the latter that is why I keep it around. In fact, it's the amp I keep in my living room. Just in case any guests want to plug in their source and listen to music.
So I use it as a knock about casual amp that I'm not too worried about if it gets scuffed up a bit.
Sometimes it's good to have a simple fuss free rig that allows you easy casual listening, and this is a good heart for that kind of rig.
Oct 2, 2016
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