Definition of Musician?

 At your risk.

A person who can sing or play at least one note correctly.

It seems a musical note have to be increased in pitch after the attack of the note ie on sustain. Otherwise it sounds flat to the listener's brain.

Speaking to one person when giving a lecture or writing a book, paper etc

 At your risk.

It helps to do away with stress, anxiety. You think you play for example music to just one person.

I think I leaned this from BBC producer Malcolm Love when he lectured at the British Council in Athens.

What does this resistor do above transistors, electronic valves or electron tubes, JFETS etc?

At your risk.

It was a mystery to be when being a kid. I was building those amazing sounding simple class A amplifiers but at |I did not know.

Then at Warwick University the great lectures of Dr. Neil Storey showed us that this resistor changes the variable current to variable voltage ie the music signal itself. We learned so much about this load resistor, load lines etc.

Please see also the book Electronics, a systems Approach - Dr. Neil Storey

 

Animals are possibly our contact with Paradise

Playing with vinyl records is like climbing a very high mountain...

 At your risk.

For example the better the preamplifier is made the more information can be extracted and there seems to be no limit...

Matti Otala, Transient Intermodulation Distortion

At your risk.

I fondly remember reading papers by Matti Otala on how a transient (music) can make a feedback amplifier distort 100 per cent until negative feedback has time to arrive at the input leaving the amplifier at the very high open loop gain!  

https://www.diyaudio.com/community/threads/matti-otala-an-amplifier-milestone-dead-or-alive.125541/

On an AES conference in 1973, Dr. Matti Otala presented a paper describing the design of a TIM-free audio amplifier...

Update to Pleiades 3 K117 RIAA battery powered phone preamplifier

 At your risk.

Now that it is inside a nice aluminum box, frequency response tests are being made using an inverse RIAA network by Lipshitz.

There was +3dB at mid bass!

-20dB at 20KHz!

It looks like the high impedance 470K pot loaded by the input capacitance of the JFET creates this high cut.

So almost like cheating the 100 Ohms resistor was changed to 12K.

Now we have -3dB at 20KHz. There is about +1.5dB at 4KHz.

For correcting the mid bass heaviness 15nF was changed to 20nF.

Now mid bass is flat and we have -3dB at 20Hz.

Even before the changes the preamp sounds very good with a feeling of 2 octaves above CDs, YouTube videos etc. After the changes about 3 octaves higher treble sparkle and no bass heaviness.

What I do like about  the sound of this preamplifier is the smoothness of the treble on violins. I think this is achieved by the fact that there is no negative feedback, no active negative feedback filter but a passive instead. So transients will not instantaneously clip (see Matti Otala transient intermodulation distortion papers).

I also like  that each stage is at low gain so there is headroom at the input.