NHB-18NS Preamplifier

The most advanced preamplifier ever designed.

1 Year




With its groundbreaking signal path technology, battery power supply and unrivalled phono stages, the NHB-18NS is still the benchmark for preamplifiers.

The NHB-18NS is peerless in terms of clarity and musicality. Designed to control NHB-series power amplifiers, it offers state-of-the-art preamplification and control.

50-ohm darT-to-Zeel connection cables complete this exquisite offering.

darTZeel has always developed the most rapid audio circuits.

The NHB-18NS’s unique circuit board layout allows each optical input to be activated separately.

The absence of global negative feedback ensures an ideal and uncompromising listening experience.

For the NHB series, each aluminium component is milled from a solid block, hand-finished, brushed and anodised.

This underlines the uniqueness and exclusivity of the NHB series.

Line Gain

Up to + 11 dB

Phono Gain

54 to 72 dB (up to 83 dB gain at output)

Analog Input Impedances
Zeel BNC 50 ohms from 1Hz to 1 MHz
RCA line > 30 kohms, from 5 Hz to 50 kHz
XLR Line > 15 kohms, from 5 Hz to 50 kHz
Phono MC : User select from 43 ohms up to 47K ohms
Line Output impedances

RCA = 75 ohms, darT BNC = 50 ohms, XLR < 600 ohms, REC OUT < 150 ohms

Frequency Response

5 Hz – 500 kHz, +0, -1 dB

Rise Time

< 0.5 µs

Slew Rate

> 24 V/µs, peak-peak

Total Harmonic Distortion (THD)

< 1 % from 10 Hz to 100 kHz within the output dynamic range

Temporal Distortion

None, at any level and load, as specified above


< – 80 dB from 20Hz to 20kHz

Signal to noise ratio

> 92 dB (A), Line; > 70dB (A), Phono w/factory settings

Power consumption

7 – 77 watts depending on working conditions

Size in mm

440 x 335 x 170 (WxDxH). Total deep with handles : 415mm

Size in inches

17.32 x 13.2 x 6.7 (WxDxH). Total deep with handles : 16.4 inches

Net weight

24 kg, power supply 3 kg, total 27 kg

Fuse ratings
115 volts: 1.0A (T) or slow blow
230 volts: 0.5A (T) or slow blow