NAD Stereo Receiver 7020e User Manual

7020e Stereo Receiver  
Date of manufacture : ? - Dec 89  
Please note that this document contains the text from the original product brochure, and some technical statements may now be out of date  
NADs product philosophy can be characterised in one phrase: “high-value engineering.” The compact  
and economical 7225PE receiver is an outstanding example of that approach; it contains much of the  
same circuitry as the 7240PE, with less output power and a substantial saving in cost  
In budget-level stereo receivers, performance and power often are compromised to reduce production  
cost. But NAD combines high production efficiency with superior performance by using the same circuits  
in both separates and receivers. The 7225PE contains the entire 3225PE integrated amplifier plus a  
sensitive, wide-range digital tuner.  
The 7225PE is conservatively rated at 25 watts/ channel of steady-state power for sine-wave test tones  
But with +4 dB of IHF dynamic headroom, its effective power for musical transients is considerably  
greater. Power Envelope design produces bursts of up to 60 watts/channel at 8 ohms and 8 0  
watts/channel at 4 or 2 ohms, ensuring clear and authoritative reproduction of the impact and sparkle  
of live music. If you ever overdrive the 7225PE, Soft Clipping™ will prevent the harshness and gritty  
distortion that is caused by hard clipping in conventional amplifiers.  
NADs impedance selector allows optimum performance to be delivered into any speaker impedance  
The 7225PE produces up to 15 amperes of peak current, delivering full power to impedances as low as  
2 ohms. The quiet phono stage and wide-range line-level circuits, like those in the 7240PE, transparently  
reproduce even the subtlest detail of every recorded sound. Infrasonic and ultrasonic filters eliminate  
unwanted interference while preserving accurate response from 20 Hz to 20 kHz. Musically effective  
tone controls adjust the deep bass and high treble without sacrificing clarity or midrange accuracy  
Radio is not just for background music, and tuner performance should not be compromised. The  
7225PE employs much of the same highly-evolved technology as the NAD 4225 tuner. A sensitive  
MOSFET front end, three stages of I. F. filtering, and a PLL multiplex decoder for wide stereo separation,  
provide an optimum combination of good selectivity and low distortion. In side-by-side comparisons  
with other receivers, the 7225PE often pulls in weak or difficult stations with noticeably better clarity  
and quieting.  
NAD 7020 e Stereo Receiver The 7020e, NADs lowest cost receiver, is similar to the 7225PE in features  
and performance, except that it is based on the 3020i integrated amplifier. It is rated at 20 watts per  
channel of steady-state power with +3 dB of IHF dynamic headroom, meaning that in musical transients  
it produces up to 40 watts/channel of dynamic power at 8 or 4 ohms  
The 7020e shares with all NAD amplifiers and receivers a high-current output stage that, when playing  
music instead of test tones, delivers full power to speakers of any impedance. Its combination of  
dynamic power, Soft Clipping™, and unconstricted output current give the 7020e a characteristic ability  
to drive even “difficult” speakers to unexpectedly high volume levels.  
In addition to its surprisingly potent speaker-driving ability, the 7020e contains the same quiet phono  
circuitry, sensitive digital tuning, wide stereo separation, sharp audio-bandpass filtering, and musically  
useful tone controls that larger NAD receivers employ. The 7020e is a no-compromise product,  
characterised by the high-value engineering that stands behind every NAD product.  
 

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