Power, elegance and grace.
darTZeel's NHB-468 monoblock amplifiers represent the pinnacle of our range.
Travel faster than the speed of thought with the NHB-468.

The most powerful amplifiers ever developed by darTZeel.

NHB-468 monoblocks are the most powerful amplifiers ever designed and built by darTZeel. They are the culmination of nine years' research and development.

NHB-468 mono amplifiers retain all the musicality of the original signal. The NHB-468's immense power supply ensures that they can cover the full dynamic range, providing effortless delivery from a few milliwatts through to a whopping kilowatt of power.


We like to say that the NHB-468s are faster than the speed of thought.

Technical data

Nominal Output Power
465 watts RMS (550 watts peak) @ 8 ohms
625 watts RMS (700 watts peak) @ 4 ohms
222 watts RMS (300 watts peak) @ 2 ohms (software limited)
Power Stage Gain
26 dB and 32 dB, user selectable (ref. 8 ohms.)
Analog Input Impedances
1 x BNC Zeel 50 ohms, 1 Hz to 1 MHz
1 x RCA line > 30 kohms, 5Hz to 100kHz
1 x XLR > 30 kohms
Speaker Output Impedance
< 0.28 ohms from 20 Hz to 20 kHz (measured under 8 ohms)
Frequency Response
0.7 Hz - 700 kHz, +0, -3 dB
Rise Time
< 0.8 µs
Slew Rate
> 200 V/µs, peak-peak
DC Output Voltage
± 50 mV
Total Harmonic Distortion (THD)
< 1 % from 7 Hz to 77 kHz within the output dynamic range
Temporal Distortion
None, at any level and load, as specified above
Signal to noise ratio
> 115 dB (A) @ nominal power
Power consumption
2 watts Standby, 40 watts @ idle, 2000 watts @ maximum output power
Size in mm
277 x 511 x 460 (WxDxH)
Size in inches
11 x 20 x 18 (WxDxH)
Net weight
70 Kg