NHB-108
model two

Often envied, never equalled.
The NHB-108 is the ultimate dual-mono amplifier.
Get ready for an audio experience that you've «Never Heard Before».

The NHB-108 was the first power amplifier designed and built by darTZeel.

The NHB-108 has earned legendary status among critics and music lovers alike. Its immediate success and multiple awards helped to quickly establish darTZeel in the premium market.

Regularly updated over a number of years and now reinvented in a «model two» version, this ultra-rapid, dual-mono amplifier is the high-end offering in the NHB series.

With power output of 150 watts per channel and its circuits patented worldwide that prevent global negative feedback, the NHB-108 model two connects effortlessly with any type of speaker, unleashing its full magic and capability.

High-tech

With two power supplies, two transformers, two audio circuits, and two coolers, the darTZeel model two is very much a dual-mono power amplifier in every respect.

The power supply cord is the only sign that everything is housed within the one chassis.

Technical data

Nominal Output Power
150 watts RMS @ 8 ohms (Hi) and 2 ohms (Lo)
250 watts RMS @ 4 ohms
Power Stage Gain
26 dB @ 8 ohms
Analog Input Impedances
BNC Zeel 50 ohms, 1 Hz to 1 MHz
RCA line > 30 kohms, 5Hz to 100kHz
XLR > 30 kohms
Speaker Output Impedance
< 0.33 ohms from 20 Hz to 20 kHz (measured under 8 ohms)
Frequency Response
0.8 Hz - 600 kHz, +0, -3 dB
Rise Time
< 0.8 µs
Slew Rate
> 88 V/µs, peak-peak
DC Output Voltage
DC comp <+/- 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
Crosstalk
< - 90 dB from 20Hz to 20kHz
Signal to noise ratio
> 112 dB (A) @ nominal power
Power consumption
50 watts @ idle, 900 watts @ maximum output power
Size in mm
440 x 350 x 170 (WxDxH). Total deep with handles : 415mm
Size in inches
17.32 x 13.78 x 6.7 (WxDxH). Total deep with handles : 16.4 inches
Net weight
30 kg