Sansui 1000A

Sansui Model 1000A


Sansui made a number of iconic receivers during their run as one of the top audio producers in the world. One of those is the classic Sansui 1000A. The 1000A is a tube receiver is known for its big and powerful sound. The A revision added bias adjustment for the 7591A output tubes. The receiver pushes out 40 watts of clean power per channel.


Sansui Model 1000A Top


The phono section does use transistors but the two top level inputs and the tuner are all tube. Unfortunately the phono section uses old germanium transistors which are somewhat difficult to replace since there aren't really modern equivalents. It can be done however. I know that some people will utilize a small outboard phono preamp and use the tape monitor loop instead.


Sansui Model 1000A Meter


Speaking of old parts the 1000A's also have old oil filled capacitors in them which when powered up for the first time after many years can have explosive effects. Best case would probably be to replace them all but you could also bring the receiver up to power very slowly with a variac. Still, I think most would agree that replacement is the best course of action.


Sansui Model 1000A Knobs


An interesting feature of the 1000A is that the low frequency filter works on the aux and tuner. Usually it is only used on the phono circuit to remove record rumble. It also has both Presence and Loudness switches which seems a little redundant.


Sansui Model 1000A Faceplate


Some of you may already know this, but the real secret behind the 1000A and many other Sansui audio products is their use of Hashimoto transformers. Hashimoto Electric was started in 1958 and has built high quality transformers practically ever since. Sansui was one of their main customers so many of their products have Hashimoto iron in them.


Sansui Model 1000A Inside


The Sansui 1000a came with a metal case but many user removed it due to the large amount of heat that the unit generates.


Sansui Model 1000A Schematic


The 1000 version is much harder to find than the 1000A and there are actually a few different versions of the 1000A as well. The 1000 was only made for a year before revisions were made and the 1000A came out.


Sansui Model 1000A Back


Some feel that the Sansui 1000A is the best sounding tube receiver ever made. That's saying a lot when comparing it to the popular Fisher 500C or 800C. Nonetheless, it definitely performs to high standards which means it is also in high demand. Run of the mill working units sell for around $500 while fully restored units can sell for $1200 or more.


Sansui 1000A tube receiver
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Fisher 1800

Fisher 1800 Front


This Fisher 1800 FM - AM Multiplex Receiver is fairly rare. It is basically the same as the Fisher 800C but with slightly different cosmetics. The front panel is two toned as opposed to the single color 800C panel. During the late 60's the first solid state gear started hitting the market and the tube gear was becoming more difficult to sell. So, the marketing brains at Fisher decided to spiff up the remaining 800C's by changing the faceplate and model number. In short, the 1800 is basically an 800C with a half black faceplate.


Fisher 1800 Side 

Unfortunately for Fisher they didn't actually sell very many of the 1800 receivers so that is why they are so rare these days. There are even rumors that the 500C was remodeled as well into a 1500. But, I have not seen one so I'm not sure it's true.


Fisher 1800 Top 

As with most Fisher receivers it's difficult to pinpoint production dates for a particular receiver. Most likely the 1800 was produced around 1968 or 1969. By 1971 the Fisher catalog had no tube gear listed whatsoever.

The Fisher 1800 puts out 30 watts per channel and has a built in MPX-65 decoder. It weighs approximately 45 pounds and measures 7.5"x 18.5" x 16".


Fisher 1800 Back 

Cosmetics are a big factor in the value of these units. Many times the front faceplate and chassis will have corrosion which hurts the value. Also, re-tubing these units can be expensive so if the original tubes are bad or not up to spec then factor that into any assessment of value as well.

A nice clean Fisher 1800 is a fine example of late sixties tube gear just before the major transition into solid state electronics. The color scheme incorporating earthtones and gold knob caps was pretty common back then.


Fisher 1800 Badge
As I mentioned above the 1800 is pretty rare and Fisher tube receivers are very popular as it is so the 1800 can sell for a high price in good working condition. The Fisher shown here sold in June 2013 for $1500 and was professionally tested, fully functional and cosmetically clean.

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