NAD Electronics AM/FM Stereo Receiver 7220PE Vintage THD, 03
Item History & Price
| Reference Number: Avaluer:14007173 | Brand: NAD |
| Model: 7220PE | Custom Bundle: No |
| Country/Region of Manufacture: Taiwan | Modified Item: No |
NAD Electronics AM/FM Stereo Receiver 7220PE Excellent!. Condition is Used. Shipped with USPS Priority Mail.
I bought this receiver new in 1984 from "the High End" audio store in Austin Texas and have taken very good care of it.
It is fully functional and works "as new" - I am selling it because I am downsizing my home.
Do not be fooled by the 20W rating - you will play this amp all day due to the warm 'tube like' sound!
Suggestion - Add an inexpens...ive Bluetooth receiver to function wireless with your wired speakers.
NAD 7220 PE (Power Envelope) THD .03%
Since circuit innovation is what makes this an outstanding performer, let's discuss that first. To begin with, don't be put off by the low continuous power rating of 20 watts per channel into 8-ohm loads. NAD had to specify that low power level to conform with FTC rules, but I know I don't listen to continuous steady-state tones and I'll bet you don't either. In the real world of musical listening, the 7220PE's unusual power supply, the heart of what NAD calls their Power Envelope circuit, can deliver short-term peaks that are 4.4 dB greater than the nominal continuous power rating. That would bring the total up to about 55 watts per channel. In fact, my measurements of dynamic headroom were even a bit better: 4.8 dB. In terms of power, that works out to be just a shade over 60 watts per channel!Another feature of the receiver prompted me to reminisce about the time when vacuum tubes and output transformers were used in all audio amplifiers. In those days, the secondary windings of output transformers had taps at different impedances so that optimum impedance matches could be obtained for speaker loads of 4, 8, or 16 ohms. In somewhat similar fashion, NAD has provided an impedance switch on this receiver. In its 8-ohm position, maximum output voltage is provided for loudspeakers of 8 ohms or higher. In its alternate, 4-ohm setting, voltage is lowered but current capacity is correspondingly increased to allow driving lower impedance speakers or two pairs of speakers wired in parallel.A "soft-clipping" circuit developed by NAD, when switched on, gently limits the waveform if the output transistors are driven into saturation. Those who believe "tube sound" is superior to "solid-state sound" will appreciate this feature-especially if they tend to play music at loud levels that might exceed the amplifier's short-term power output capacity.Another enhancement found in the 7220PE is an infrasonic filter. Unlike most built-in subsonic "rumble" filters that have a shallow roll-off characteristic of 6 dB/octave, this one has a 24-dB/octave slope with a cutoff point of 15 Hz.
Tuning range: FM, MWPower output: 25 watts per channel into 8Ω (stereo)Frequency response: 20Hz to 20kHzTotal harmonic distortion: 0.03%Damping factor: 50Input sensitivity: 2.5mV (MM), 160mV (line)Signal to noise ratio: 75dB (MM), 99dB (line)Dimensions: 420 X 91 X 273mmWeight: 5.5kg
I bought this receiver new in 1984 from "the High End" audio store in Austin Texas and have taken very good care of it.
It is fully functional and works "as new" - I am selling it because I am downsizing my home.
Do not be fooled by the 20W rating - you will play this amp all day due to the warm 'tube like' sound!
Suggestion - Add an inexpens...ive Bluetooth receiver to function wireless with your wired speakers.
NAD 7220 PE (Power Envelope) THD .03%
Since circuit innovation is what makes this an outstanding performer, let's discuss that first. To begin with, don't be put off by the low continuous power rating of 20 watts per channel into 8-ohm loads. NAD had to specify that low power level to conform with FTC rules, but I know I don't listen to continuous steady-state tones and I'll bet you don't either. In the real world of musical listening, the 7220PE's unusual power supply, the heart of what NAD calls their Power Envelope circuit, can deliver short-term peaks that are 4.4 dB greater than the nominal continuous power rating. That would bring the total up to about 55 watts per channel. In fact, my measurements of dynamic headroom were even a bit better: 4.8 dB. In terms of power, that works out to be just a shade over 60 watts per channel!Another feature of the receiver prompted me to reminisce about the time when vacuum tubes and output transformers were used in all audio amplifiers. In those days, the secondary windings of output transformers had taps at different impedances so that optimum impedance matches could be obtained for speaker loads of 4, 8, or 16 ohms. In somewhat similar fashion, NAD has provided an impedance switch on this receiver. In its 8-ohm position, maximum output voltage is provided for loudspeakers of 8 ohms or higher. In its alternate, 4-ohm setting, voltage is lowered but current capacity is correspondingly increased to allow driving lower impedance speakers or two pairs of speakers wired in parallel.A "soft-clipping" circuit developed by NAD, when switched on, gently limits the waveform if the output transistors are driven into saturation. Those who believe "tube sound" is superior to "solid-state sound" will appreciate this feature-especially if they tend to play music at loud levels that might exceed the amplifier's short-term power output capacity.Another enhancement found in the 7220PE is an infrasonic filter. Unlike most built-in subsonic "rumble" filters that have a shallow roll-off characteristic of 6 dB/octave, this one has a 24-dB/octave slope with a cutoff point of 15 Hz.
Tuning range: FM, MWPower output: 25 watts per channel into 8Ω (stereo)Frequency response: 20Hz to 20kHzTotal harmonic distortion: 0.03%Damping factor: 50Input sensitivity: 2.5mV (MM), 160mV (line)Signal to noise ratio: 75dB (MM), 99dB (line)Dimensions: 420 X 91 X 273mmWeight: 5.5kg
