NAD C 427 Stereo AM/FM Tuner

Rediscover the ease and warmth of broadcast radio with the NAD C 427, a purpose-built stereo AM/FM tuner engineered for clean reception and low-noise performance in a serious hi-fi system. NAD’s refined RF design helps stations lock in with greater stability, while smart listening tools like Auto Search, FM Mute, and Blend make weaker signals more enjoyable by reducing inter-station noise and improving perceived clarity. A crisp four-line VFL graphic display keeps essential info easy to read at a glance, and RDS PS/RT support adds helpful station naming and radio text where available. With 40 programmable presets (AM or FM), smooth rotary tuning control, and integration-friendly connections like RS-232 and rear-panel IR input, the C 427 fits naturally into both classic stereo stacks and custom-installed systems—without clutter or complication.

What It's Good At:

Delivering clearer, more stable AM/FM reception with a carefully engineered low-noise tuner design
Making station hunting effortless with Auto Search that stops on the strongest available signals
Keeping tuning quiet and enjoyable using FM Mute to eliminate distracting inter-station noise
Improving listenability on weaker stereo broadcasts with the Blend function
Fast, organized access to favorites with 40 programmable presets (AM or FM) and retained memory
Integrating cleanly into advanced systems via RS-232 control and rear-panel IR input

NAD C 427 Full Specifications:

RDS: PS (Station name) and RT (Radio text)
Presets: 40 station random presets (AM or FM)
Display: VFL graphic display (four-line)
RF Front End: MOS-FET RF Front End
Control / Integration: RS-232 interface; IR input
Remote: NAD full function remote control
Standby Power Consumption: <0.5W
FM Tuner — Usable Sensitivity (98MHz): 10dBμV
FM Tuner — Signal/Noise Ratio: 65dB (60dBμV IHF-WTD Mono); 60dB (60dBμV IHF-WTD Stereo)
FM Tuner — Frequency Response: ±1.5dB (20Hz – 15kHz, 60dBμV)
FM Tuner — Channel Separation (60dBμV): 30Hz 33dB; 1kHz 40dB; 10kHz 32dB
FM Tuner — Capture Ratio (40dBµV): 3dB
FM Tuner — AM Suppression: 50dB (60dBμV, 100% Mod. FM, 30% Mod. AM)
FM Tuner — Image Rejection (119.4MHz): 70dB
FM Tuner — I.F. Rejection (10.7MHz): 70dB
FM Tuner — Pilot Suppression (60dBμV): 60dB
FM Tuner — Total Harmonic Distortion (THD): Mono 0.4%; Stereo 0.8%
FM Tuner — Auto Search Sensitivity: 24dBμV
FM Tuner — RDS Decode Sensitivity: 26dBμV
AM Tuner — Usable Sensitivity (999/1000kHz): 55dBµV
AM Tuner — Signal/Noise Ratio (5mV in): 42dB
AM Tuner — Total Harmonic Distortion (5mV in): 1.5%
AM Tuner — IF Rejection (450kHz): 40dB
AM Tuner — Image Rejection (F+2xIF): 28dB
AM Tuner — Selectivity: 20dB
AM Tuner — Loop Sensitivity (20dB S/N): 999/1000Hz 66dB; 603/300Hz 66dB; 1404/1400Hz 66dB
AM Tuner — Frequency Response: (100 – 2.3kHz, 5mV) ±6dB
General — Standby Power: <0.5W
General — Gross Unit Dimension (W x H x D): 435 x 99 x 315mm
General — Gross Unit Dimension (inches): 17 1/8 x 3 15/16 x 12 7/16”
General — Net Weight: 4.6kg (10.1lb)
General — Shipping Weight: 5.4kg (11.9lb)

NAD C 427 Q&A:

Does the NAD C 427 support both AM and FM radio?: Yes. The C 427 is a dedicated stereo tuner designed for both AM and FM reception.
How many stations can I save as presets?: You can store up to 40 presets total, in any mix of AM and FM stations.
What does Auto Search do?: Auto Search scans through stations and automatically stops at the strongest available signal for easier tuning.
What is FM Mute, and why would I use it?: FM Mute reduces or eliminates inter-station noise while tuning, so you don’t hear loud bursts of static between stations.
What does the Blend feature do?: Blend helps improve listenability on weaker stereo signals by reducing noise and making stereo broadcasts sound smoother.
Does it display station information?: Yes. It supports RDS PS (station name) and RT (radio text) when broadcast by the station, shown on the VFL display.
Will I lose my presets if the unit is unplugged?: No. Preset memory is retained even when the unit is unplugged.
Can it be integrated into a custom control system?: Yes. The C 427 includes RS-232 and a rear-panel IR input for integration with external control solutions.

NAD C 427 Downloads:

NAD C 427 Manual
NAD C 427 Data Sheet

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