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Roelofs RA-3200/ RA-4200 amplifier

 


 

General:

Well build stereo amplifiers made by "Comet Electro Japan" in around 1968-1970, with excellent performance.

 

^ RA-3200

^ The RA-4200 is approx. 1 cm wider.

 

 

Special futures:

Headphone jack. Din sockets.

 

^ Front & top RA-3200

 

User Manual:

Click here to download the user manual in PDF format

 

^ Interior top RA-3200.

 

Schematic:

Click here to download the schematic in PDF format

^ power transistors 2SD154 NEC

 

Modifications:

The power supply is very basic, it may be upgraded.

 

Back panel RA4200 ^

 

Interiors of TT4200 & RA4200 ^

 

With tuner TT-4200 ^ Prinzsound versions.

 

 

Sound:

excellent performance.

 

The TT-4200 tuner in Prinzsound version ^

 

Construction

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© PE1MMK Hans Hilberink last update:  15-09-2019.