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.

  • Category: Power Amp


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