N 053 The latest Black Widow Power Amp Amplifier Multi Mode Bridging Balance 8 ohm 350W Dartzeel NHB368 NHB268 Study Version

N 053 The latest Black Widow Power Amp Amplifier Multi Mode Bridging Balance 8 ohm 350W Dartzeel NHB368 NHB268 Study Version
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   NHB 268





*Rated output power: 260 watts RMS, 8 ohms, 420 watts RMS, 4 ohms
*Fixed output gain: 26dB (8 ohms)
*Input impedance: RCA: > 30 k ohms, 5 Hz-200 k Hz
                             BNC: 50 ± 1 ohm, 10Hz-100K H
                             XLR: > 100k ohms
*Frequency response: 20Hz-100K Hz, +0, -6dB (BNC)
                                   20Hz-100k Hz, +0, -0.5dB (RCA)
                                   20Hz-50k Hz, ±0.5dB (XLR)
*Total harmonic distortion: < 1%, 22Hz-77k Hz
*Signal to noise ratio: >96dB, A weighting, standard power
*Power consumption: 130 watts (standby), 1300 watts (maximum output power)


*Size: W*H*D 450mm*150mm*365mm
*Input: RCA/XLR/BNC each group, default balanced output
*2 650w (specially designed for hifi transformers)
*12 BC Visha 22000U capacitors,
*Two New York XLR balance seats
*2 pairs of VISHAY capacitors
*1 switzerlands Schurter AC power socket
*The triodes are all from the ON Semiconductor series
*  WIMA capacitor, Philips electrolysis BC resistor, etc.  
*NW: 41KG


                                                                                                       NHB 368





The whole voice is based on Switzerland Dartzeel and then incorporated into the features of our own.


Differences between Black Widows and other versions


According to the sound characteristics and shortcomings of the previous versions, we upgraded the sound,and achieved that one machine , multifunction and many sound styles . The black widow power amp is a full-transistor amplifier , on the circuit we refer to a number of European imported inscription machines for sound correction. The sound obtained is absolutely suitable for the use of the vast number of HIFI friends and families.


Black Widow power amp have good control of the actual hearing sense, low frequency solid force, excellent air sense, and super strong explosive power . whatever the normal songs or symphony ,this machine is doing well .  




Size: wide 480 high 200 depth 525


Weight: net weight 51KG


Static power consumption: 150W


Power: 8 Ω 350 W / 4 Ω 600  W


Type a: RCA / XLR / BNC


Black Widow input Interface:

XLR balanced/ RCA / BNC each group, through balanced input, the corresponding function can be switched on the back board switch.




1. NHB/NFB function feedback setting

2. DC/AC Amplifier function setting

3.DC Servo / No Servo function setting

4. temperature Control current function setting (automatic reduction of Tube operating current when Radiator Stability exceeds set value) default single Tube current is 150ma, switch to 100ma automatically when temperature exceeds 65 ℃.



1. the best HIFI AUDIO material

2. 2 pieces of 800ws (specially customized transformers for hifi)

3. 12 pieces of BC Vishay 63V 22000UF VISHAY-M 106 advanced electrolytic capacitors

4. 2 pieces of New York balanced sockets

5. 2 pieces of New York audio transformer

6. 2 pieces of Cardas RCA

7. 2 pieces of New York XLR balance sockets 

8. 2 pairs of Swiss imported binding post

9. 1 piece of Swiss Schuter AC Power socket.

10.  Transistor comes from ON series , internal conductors come from Cardas , capacitors come from WIMA ,PHILPS electrolysis ,BC resistance and so on.


Sound style:

Thick and powerful low frequency, mild magnetic medium frequency, magnificent high frequency.