You wouldn't want to know... A plastic ruler.
Edit:
So, I do not want to double post but I do want to mention something: Venus pairs really well with the S.M.S.L. D300 DAC, which is said to have an R2R Analogue type of signature. When paired with the D300, the Venus becomes both a detail monster while singing with musicality in comparison to the flat SU-1. I'm hearing tons of more detail with the D300 along with more liveliness, which is a prime upgrade from the SU-1. I found my head bobbin to the drop of this song:
With the D300, I could turn up the volume with my headphone amp up to 2 o'clock, with sibilance only applied to several specific songs. With the SU-1, I can only turn up to 12 o'clock, any more than that the majority of the songs are prone to sibilance. Although with the D300, static may occur with my laptop and equipment, which is dangerous, and probably will lead to equipment failure. This is probably due to an electro shock that occured with an amplifier of mine last time. I have to open up and check for repairs soon, since its out of the warranty date.
Also, awaiting impressions of the PARA with the Venus.
Update: Welp, performed surgery checkup for my D300. Cant find the problem through multimeter checking, but I definitely found some of the plastic sleeves around the plug area being loose. Tightened them up and screw everything back in. So far, the problem has been solved...? Problem now, I have to check the voltage around my house and design a solution.
Update 2:
Nah, caps need replacement. Although the tonality was top notch, can't risk the health if the equipment is leaking electricity.
Update 3: Issue likely related to the plastic sleeves. After applying a questionably limited amount of insulating tape, only enough to cover the exposed area of the plastic sheet, the issue seems to be mitigated. At least I don't feel the current leakage for now.
Update 4: Used a Voltage regulator to lower the voltage from 250V AC to 220-225V AC. Leakage issues majorly sorted.