C 427


Stereo AM FM Tuner

FM remains one of the most reliable and best sounding mediums for hassle-free music listening. NAD’s C 427 builds on the strengths of previous NAD tuners by offering a quality of reception that is as good as, or better than, the quality of today’s broadcasts. Whether you are looking for excellent performance, ease-of-use, or the convenience of RDS, the C 427 offers all these with the value to performance ratio for which NAD is so renowned. Features MOS-FET RF Front End design for high sensitivity, low IM distortion. 40 x presets.

SKU: AU-NADC427 Categories: ,

Product Story

Loads of Presets

With 40 presets available you can store all your favourite radio stations. These presets can be any combination of AM and FM stations. To avoid having to scroll through 40 presets, the C 427 skips any that have not been programmed (left empty), so you can quickly access all your favourite stations.

Simply Convenient

Instead of littering the front panel with buttons and features that are hardly ever used, the C 427 concentrates on convenience in daily operation. The RDS limits itself to the RDS PS and RT function, both of which enhance ease of operation. The RDS PS (Program Service) will automatically indicate the name of the radio station on the display, e.g., “Triple J,” so you will always know exactly what station you are listening to. With its four-line graphic display, you always see all the available information. Preset information is stored in the C 427’s non-volatile memory, which means it will remember all of its preset information even if the unit has been unplugged.

Great Reception

Auto Search automatically stops at the next strong radio signal it comes across and optimizes tuning. Weaker radio stations can be tuned into manually. Stations that are quiet in Mono but noisy in Stereo can benefit from the “Blend” feature that narrows stereo separation and lowers noise. FM Mute eliminates inter-station tuning noise and only allows strong and clear stations to emerge from the silent background. Although AM can never reach the quality of any FM transmission, the C 427’s AM section retains excellent clarity together with the lowest possible background noise.

Performance Driven

The NAD C 427 also offers features to get the maximum out of the airwaves. The MOS-FET RF Front End design together with high-quality components and careful PCB layout guarantees excellent sensitivity with low intermodulation distortion to provide a quiet and musically satisfying performance.

Whether you are looking for excellent performance, ease of use or the convenience of RDS, the C 427 offers all these with the value to performance ratio for which NAD is so renowned.

Key Features:

  • Strong reception pickup
  • FM Mute to remove inter-station noise
  • 40 Station random presets (AM or FM)
  • Auto Search for easy, quality listening
  • RDS PS (Station name) and RT (Radio text)
  • VFL graphic display
  • IR input & RS-232 interface
  • <0.5W Standby power consumption




Usable Sensitivity (98MHz): 10dBμV

Signal/Noise Ratio
65dB (60dBμV IHF-WTD Mono)
60dB (60dBμV IHF-WTD Stereo)

Frequency Response (±1.5dB): 20Hz – 15kHz (60dBμV)

Channel Separation (60dBμV)
30Hz: 33dB
1kHz: 40dB
10kHz: 32dB

Capture Ratio (40dBμV): 3dB
AM Suppression: 50dB (60dBμV, 100% Mod. FM, 30% Mod. AM)
Image Rejection (119.4MHz): 70dB
I.F. Rejection (10.7MHz): 70dB
Pilot Suppression (60dBμV): 60dB

Total Harmonic Distortion
Mono: 0.4%
Stereo: 0.8%

Auto Search Sensitivity: 24dBμV
RDS Decode Sensitivity: 26dBμV


Usable Sensitivity (999/1000kHz): 55dBμV
Signal/Noise Ratio (5mV in): 42dB
Total Harmonic Distortion (5mV in): 1.5%
IF Rejection (450kHz): 40dB
Image Rejection (F+2xIF): 28dB
Selectivity: 20dB

Loop Sensitivity (20dB S/N)
999/1000Hz: 66dB
603/300Hz: 66dB
1404/1400Hz: 66dB

Frequency Response: 100Hz – 2.3kHz (5mV, ±6dB)


Standby power: <0.5W
Unit Dimension (WxHxD): 435 x 99 x 315mm
Net weight: 4.6kg
Shipping weight: 5.4kg


C 427 Data Sheet

C 427 Manual – ENGLISH