Dartzeel NHB 468 Mono AmplifierDartzeel NHB 468 Mono Amplifier

NHB-468 Mono Amplifier

The most powerful amplifiers ever developed by darTZeel.


Power, elegance and grace. darTZeel’s NHB-468 monoblock amplifiers represent the pinnacle of the range.

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.

“The darTZeel owners I’ve met seem to be a happy, enthusiastic group, satisfied with their purchases and with the sound produced by whichever darTZeel products they have. Count me among them. The new NHB-468 has made me even happier. This amp does what the NHB-458 does—just better. It’s got power to spare and sounds as if it’s just loafing, even on the most demanding material.” –  Michael Fremer – Stereophile Magazine.

Price quoted is for a single unit. Not a pair.

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