- Jul 19, 2020
- Commonwealth of Massachusetts
And as far as the micro groove LP, great 1940’s source with important limitations:Cut it out. We had dbx with 110dB dynamic range, Dolby C came out before CD and gave us in the 70dB+ S/N. And open reel.
Preamplifiers are a shadow and I mean a shadow of their former selves. Not even close. Okto, Topping and Benchmark 'preamps' are just linestages with hardly any functionality. Where's the MM stage, the MC stage, the tone controls, the filters, the loudness contours, the multiple inputs, headphone stages and processor loops? Notably absent. They are a tiny sub facet of a real preamplifier.
I have plenty of real preamplifiers- you should try one yourself. And today (because it's pouring rain), just for fun, I'm measuring phono overloads because a bunch of people are interested. Guess what? The worst one so far is a 2015 product. The best one so far is a 1980 product!
1) The very variable quality of different pressings.
2) The progressive constant decrease in linear velocity as the stylus would get closer to the center: the first song was reproduced with the best quality, the last on the disc the worst.
3) Way too dependent on the dust in the environment and very difficult to clean the grooves from it
4) Very poor stereo separation between channels, at best 25 dB in the bass and mids, 15 dB in the treble
5) Noisy surface: the 0 signal parts were audible, very audible in the background noise the created from the friction of the diamond stylus over the vinyl.
6) The warps of the vinyl plate (a very, very common occurrence, often not qualifying for a free replacement. I still remember my disappointment when I bought the “Trilogy” LP by ELP and found that a rumble was added to the first song, clearly audible every 2 sec through the ppp of the signal at the beginning. The Empire 298 arm/ Shure V15-III was barely able to track. The quality control was poor and inconsistent.)
So, nope, I do not miss the LPs a bit, nor the MM or the MC inputs of the dinosaur preamplifiers.