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Mint condition. In original boxes with all accessories. Lots of power on tap. The DAC has a label saying "updated" which I think means it includes the fix for the high-frequency roll-off on unbalanced outputs that was identified on early units. $1000 shipped, firm, won't separate, CONUS only...

Qobuz added a bunch of Pink Floyd albums in hi-res. I’m thrilled, I can finally listen to the actual noise of the analog recording equipment of the 60s and 70s in all its purity not polluted by the silly quantization noise of the 16bit format. Joking aside, is there any theoretical benefit of...

The all so familiar good old FR plot that makes sense - Vrms(F). Anyone knows how Vrms is determined in AP or in general? Is this just 0.7071xVpeak of the waveform perhaps with some averaging for Vpeak detection or is there more to it?

Today I bought a 1Kw Tripp-Lite isolation transformer from someone living in my immediate area who had it listed it in the local classified ad section. I had no immediate need for it but the price was right and I like the idea of having one in my ever growing collection of things I rarely use...

While shopping for a big pack of toilet paper at a local Costco I stumbled upon a 12" Klipsch sub there on sale for $150 and couldn't resist... Model R12-12SW, 400W power claimed and it's a substantial and rather nice looking ported box. Klipsch and Costco is not a very promising start, bad how...

I know, I know. But I'm curious and it sounds like a fun project and I have some efficient Klipsch speakers to pair it with. Any recommendations for a public domain schematic that is worth to spend time and reasonable amount of money on?

So I recently switched to an AT&T entry-level unlimited plan from a capped one because my family would burn through any pre-allocated limit and now my Spotify sounds like crap when streaming over wireless, my guess it is the "Low" 24kbps stream as 96kbps generally sounds ok. Tried switching the...

Topping Dx7s. Good shape, everything works. Power, stock USB cable, 1/4" to 3.5mm headphone adapter included. No remote. Yours for $250 all-inclusive shipped to CONUS. Priced to sell.

Let's first cover the basics. Should one bother?

Any opinions? Nelson is certainly no fool and a well respected subject expert, but my impression he's more in the "sounds good" than in the "measures good" camp. Just trying to place the "NP" brand in the right perspective for myself.

The endless agonizing about oversampling digital interpolation filters and how they can badly affect the sound leaves one wondering if it is possible to create an ideal analog filter that would make a digital filter unnecessary. The common knowledge tells us that digital filters were introduced...