NAD 4020B Tuner

The NAD 4020 is a rationally engineered, moderately priced AM/FM tuner, whose performance in most locations and with most broadcasts is audibly identical to that of many more expensive and elaborate tuners. The 4020’s quality of sound is limited only by the quality of the transmitted broadcast.
Recent dramatic advances in FM tuner circuitry, particularly in the development of inexpensive but high-performance “building block” circuit modules, have been incorporated in the 4020 to provide excellent sound at a reasonable price.
Such crucial design parameters as sensitivity, low distortion and wide stereo separation have been given priority over the inclusion of costly superfluous features and esoteric circuitry whose benefits are totally inaudible except in extreme reception conditions. But no compromises whatsoever have been made in those performance areas which relate directly to the 4020’s listening quality in normal (and even somewhat difficult) reception locations.
The “front end” tuning circuit, for example, employs a Junction FET amplifier, for an optimum combination of sensitivity to weak signals and resistance to cross– modulation from strong signals. The intermediate frequency (I.F.) amplifier, a high-gain IC, provides excellent limiting (static suppression), very good AM rejection (suppression of multipath interference), and smooth muting of interstation noise.
While budget-priced tuners commonly contain one or two ceramic I.F. filters, the NAD4020 employs a total of three. Their sharp selectivity minimises interference from adjacent stations on the increasingly crowded FM dial, and their linear-phase response contributes to minimum distortion of stereo broadcasts. Multiplex stereo decoding is performed by the latest phase-locked loop (PLL) IC. In addition to low noise and wide stereo separation, the PLL decoder yields the lowest distortion in stereo reception – in particular, minimum inter-modulation between high audio frequencies and the 19 kHz stereo pilot tone.
It is important to maintain wide stereo separation at low and high frequencies as well as the commonly-specified 1 kHz midrange point. in the 4020, phase shift of the composite signal is minimised in order to preserve full low-frequency separation, and a special NAD phase-compensated crosstalk cancellation circuit increases high-frequency separation and minimises any residual distortion.
Instead of a costly and fragile moving-coil tuning meter the 4020 has a set of three LED indicator lights which form a remarkably simple and accurate meter. Either of two amber LEDs illuminates when the 4020 is mistuned to either side of a station frequency, and a green LED illuminates when the station is optimally tuned for minimum distortion (within 0.025 MHz). The brightness of the green tuning LED indicates the signal strength; when it is dim the station is too weak for optimum reception.
For the music lover seeking uncompromised performance for a modest investment, the NAD 4020 is the logical choice. There are more costly tuners available, some of which have more impressive specifications, but very few sound better in everyday use.

FM Tuner Section
Input Sensitivity:
Mono: - 30 dB THD+N, 10.9 dBf (1.9 µV/75 Ω)
Mono: 50 dB S/N, 16 dBf (3.5 µV/75 Ω)
Stereo: 50 dB S/N, 37 dBf (40 µV/75 Ω)
Capture Ratio: 1.5 dB (45 - 65 dBf)
AM rejection: 60 dB (45 - 65 dBf)
Selectivity: 65 dB
Image Rejection: 50 dB
IF Rejection: 75 dB
Harmonic Distortion: Mono 0.2%; Stereo 0.3%
Signal/Noise Ratio: Mono 75 dB; Stereo 70 dB
Frequency response: ± 0.5 dB 30 Hz - 15 kHz
Channel Separation at 1 kHz: 42 dB
AM Tuner Section
Usable Sensitivity: 250 µV
Selectivity: 30 dB
Image Rejection: 50 dB
IF rejection: 40 dB
Dimensions: 420 (W) x 240 (D) x 96 (H) mm
Weight 4.2 kg

Turnaround

Orders will usually dispatched within 2 working days of receiving cleared payment.

Shipping Rates

We calculate your shipping rate based on the total weight of your items and your delivery address. Standard shipping to the UK Mainland (excludes Northern Ireland, Isle of Man, Channel Islands) is free, except where specifically indicated. Don't worry, you'll always see the final shipping charge displayed before you reach the payment step (on the checkout page).

Carriers

We despatch the bulk of our UK mainland items on a 24 hour service.  Non-Mainland locations – Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland may take a day or so longer. Smaller items are delivered using Royal Mail 24 or special delivery. Larger items are delivered using a courier service such as UPS and occasionally by a Pallet service.

Order Tracking

If a tracking # is provided by the carrier, we will update your order with the tracking information. Please note that some orders will not have tracking numbers.