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3M back in about '75 made a turntable (at least in the lab) that had an active servo on the tracking force. They used a strain guage dc coupled cartridge to provide the force sense. You could play it vertically, horizontally, or even upside down. Not a successful product probably because of...

https://philharmonicaudio.com/products/ht-tower Save your money. Super low distortion, Purifi woofers - great crossover by Dennis Murphy

If Shure wants to overprice something, they ought to get back into making and selling phono carts. Phono enthusiasts would gladly pay many hundreds for a new V15 VIMR

That late Beethoven quartet is truly mind blowing. I saw the Danish string quartet play it and, WOW. Unbelievable composition. Last thing Shubert heard before he died.

I hope Santa brings these: https://philharmonicaudio.com/products/ht-tower?variant=44391572537588

Well you are correct and common mode rejection is very important to get right for lowest distortion. It takes more transistors (to get CM distortion great) and discrete opamps are unlikely to throw those parts in. It's much better to have a good process in the hands of a good designer with...

Balanced maybe better or maybe not better, depending on your exact configuration. For the case of line level short runs between equipment plugged into the same power strip - probably the same? One thing that is certain however, if you want to be as good as unbalanced, it will cost you more. [I...

Please study Sam Groner's tome: https://www.nanovolt.ch/resources/ic_opamps/pdf/opamp_distortion.pdf There you can see several discrete opamps vs. many classic IC opamps. The discrete opamps, including the 990 are not great. Dean Jensen's 990 actually uses IC technology by using a dual...

I have a special B&K 1/4" instrumentation/measurement microphone that is pretty flat up to 50K Hz. The trade-off for this performance is however noise. This small condenser mic is just less sensitive than the more common 1/2" and 1" capsules. I am not willing to audibly degrade my noise floor...

I like wire shelving. It's extremely flexible and can be configured many different ways; for home theater, two channel audio, or kitchen island. Glass and butcher block is available, although I prefer just wire shelves for great airflow. Chrome, black, copper, and even green can be obtained...

We all used to think a new vinyl record sounded good. A look at the ASR Phono Cartridge Measurement Library database shows that state-of-the-art phono setup has about 0.3% THD best case. Frequency response can be pretty good, certainly to 10KHz or so. - But the overall Signal to Noise ratio...

125 proof ! ?

Anything with banjo. Especially annoying: banjo in Jazz. Also not a big fan of sax.

Check out SOMAFM streaming channel "Boot Liquor". All the songs mention booze somehow. (and/or broken hearts, momma, and cheat'n) Very humorous and great music.

I like the feedback answer, but more accurately what we need is high open loop gain in the pass band, like 100db. It's also nice to minimize distortion as much as possible in the topology of the circuit, by proper design and layout. D. Self And R. Cordell have both written great books that...

The Aphex exciter was invented when Kurt Knoppel (sp?) miswired a Dynaco St70 by accident and generated huge 2nd harmonic distortion. He liked what he heard and made a business around it.

12 bit perfectly dithered 50k Samples/sec sounds better than state-of-the art analog tape IMHO. Much better (perfect) time-base and perfect frequency response. Both things are very hard to get right on analog tape. Noise is about the same. Some hiss. So what, really. Now we have dead...

KEF is the way to go. Just get something like this: https://www.usaudiomart.com/details/649907093-kef-r600c-center-channel-in-rosewood-mint/

I think we can all agree - this whole stylus - soft vinyl groove thing is a disaster. I am so happy I have Roon, Chromecast, and a good DAC. (and I have a SP-10 with a V15-MR Jico, - which is never used.)

Back when we made test tones for the 3M Digital Mastering System, we would make a EPROM with the sine wave in it. We would try to make each sin different so eventually we would test nearly all the numbers in 16 bits. For example, if we had a 16K Byte (16384) EPROM and we wanted about 1K Hz at...