2019 version of Black widow parameters:

Chassis size: width 480 height 200 depth 525

Machine weight: net weight 52KG.

Static power consumption: 150W.

Input: RCA/XLR/BNC each set.

Black widow function: NHB/NFB function feedback setting DC/AC amplifier function setting DC servo/no-servo function setting temperature control current function setting (when the radiator stabilizes and exceeds the set value, the working current of the tube is automatically reduced) The default single tube current is 150ma, Automatically switch to 100ma when the temperature exceeds 65℃

2 pcs of 800w (specially customized transformer for hifi) 12 pcs of BC Vishay 63V 22000UF VISHAY-Q 106 high-grade electrolytic capacitors 2 pcs of high-speed audio module

2 Kadas RCA 2 New York XLR balance seats

2 pairs of terminals imported from Switzerland

1 Japan Furukawa AC power socket

Transistors are all from ON Semiconductor’s ON series, internal wires, Cardas, Weimar capacitors, Philips electrolytic BC resistors, etc.

Differences between Black Widow and other versions: According to the sound characteristics and shortcomings of the previous versions, Yuanyun has re-calibrated the Black Widow back-level sound, achieving a multi-function and multiple sound style orientation. Speaking of multi-function, some fans may think about it. The goal of playing audio is to have a good sound, and the definition of a good sound should be achieved by the manufacturer, rather than providing a bunch of functional options for audiophiles to adjust by themselves. It's because you should be your own voice and let customers pursue it blindly. Choose the kind that is the best sound, which seems to be more compatible and actually dilutes the characteristics. In fact, I don’t agree with this kind of enthusiasts. Maybe many people think that the single function is the best voice. This kind of thinking is actually wrong. Everyone has different ages and different ears and hearing. The sound is good or bad, and we cannot simply make a conclusion. Assembled on the back stage of Black widow. The black widow rear stage is an all-transistor amplifier, but on the line we refer to many European imported Mingji machines, and use Mingji machines as a reference for sound calibration. The resulting sound is definitely suitable for use by a large number of enthusiast families. The human voice is relatively prominent, and the classical is also very good. The explosive power of listening to the symphony is quite amazing. The obvious difference between the sound of the Swiss Daxiao and the NHB-250 is the sound fineness and moistness. Explosive power clearly wins.