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Pioneer Model QX-9900 Quadrophonic Receiver

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Many Views
EBay Auction #281583158
Date: March 14th, 2000

Akai or Pioneer?

This unit is quite similar to Akai's AS-990 quad unit - clearly a sharing of designs or OEM agreement was involved. There are a number of differences, but you can look at the meters, the knobs and so forth and pretty well draw the conclusion that someone was in someone else's bed…

I actually have an AS-990, and the next time I have the digital camera out, I'll grab an image and put it here for comparison's sake.

Contributed by Ben Blish
On March 14th, 2000

 

General
DescriptionQuadraphonic Receiver
RarityX-Rare
AC SwitchYes

Amplifier
RMS Power Per Channel38x4 into 8 ohms, 50x4 into 4 ohms
Total Harmonic Distortion (THD)0.03% at 18 watts/channel
Intermodulation Distortion (IM)0.05% at 18 watts/channel

Have some additional information about the Model qx9900 Quadrophonic Receiver? If so, I would sure appreciate it if you would EMAIL that to me. I'll add anything: What type of controls, specifications, number and type of AC outlets on the back... anything!

One thing, though... if you see some info and you believe it is incorrect, that is certainly possible. However, it does no good to tell me that "I don't think that's right". You need to tell me the correct information to replace it with. For instance, if I have that a particular model was available 1978-1979, and you believe that is wrong, then tell me the exact correct range and your source of information, rather than "I had one of those in 1976". Otherwise, I can't really change the database with any confidence.

The database currently contains "slots" for many AM Tuner, FM Tuner, Amplifier and Preamplifier specifications, as well as many of the controls and features Pioneer has made available on these units. You can check the Sample Unit to see all of the database slots. You might even be surprised at some of the slots that are available. However, if you come up with something that's not in the Pioneer Classics database, either a specification or a feature, I can add it in just a few minutes, along with specific details about that feature for any model(s) you know of. Don't be shy - tell me!

These listings can only be as good as the information in them. With your help, they will improve over time. Please accept my heartfelt thanks in advance for anything you can contribute.

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