First Circuit. Voltage Divider / Clipper for sound card measurements

[barbaroja]

After a good read of Daqarta help, https://www.daqarta.com/dw_0all.htm, I decided to build the circuit. I am going to measure some higher voltage signals with an M-Audio ProFire 610. Circuit works and all is good.

So to be completely clear:
Objective: Get an AC signal (up to 80Vp) coming from vintage amps and EQs to not destroy the audio interface. Solution: Clip the signal with LEDs.
Measured the interface inputs and it clips around 4.8Vrms. So I am clipping the signal now using the original circuit proposed in Daqarta help, with two LEDs, one green, one yellow for a Vdrop of 1.9+1.8=3.7V, which seems reasonable. I am actually using a 20K resistor. That, paired with the Zin of 10K (measured with a voltage divider) gives a gain factor of 0.33.

So 2 things are important.
1. Voltage gets divided
2. Voltage gets clipped (and clipping does not destroy LEDs)

However, I wanted to get a better signal clipping indicator. LEDs do not light properly when the threshold is just there so I tried to have that current going to ground to light them up.

So I came up with this circuit:
https://tinyurl.com/ygsvll5x
I like it because it is my first. But I do not because Needs 2 leds, plus the intended "turn on quick" idea was still not there.

I posted in Reddit (sorry if you are re-reading this) and a suggestion came:
https://tinyurl.com/y3mjj2ts

Which I like but I do not understand at all.

At this point I am open to suggestion, questions, ideas, explanations. I am truly a novice at designing circuits.