General Radio 1395a Modular

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via this auction

First set:

"One NOT Working vintage general radio 1395a modular pulse generator. There is a burned resistor in the power chassis. The tubes are not included but all labels looking good and readable so you will have to get your own tubes and repair the unit. This unit makes great sounds and does some pretty unique waveforms. Technology is rare. I have not even tapped into everything this unit can do. This mainframe is for a museum or collector. I have never known of many of these to exist. These are early computers and predessors of synthesizers . There is a word generator which is a simple sequencer, a prf unit which is basically voltage controlled clock that drives the word generator and pulse oscillators. The voltage controlled clock also have a gate input. There is a signal amplifier also that has an impedance bridge. There is a pulse shaper as well. There is a module to this system not included that I wanted to compete the system that is an early tube sampler and ad converter.

1. Manuals and schematics

2. 1 x General Radio 1395a power supply

3. 1 x General Radio PRF Unit 1395-pi

4. 3 x General Radio Pulse/Delay Unit 1395-9602

5. 1 x General Radio Power Amplifier 1395-9604"

Second set:

"General Radio 1395a Modular Analog Computer Synthesizer Rare vintage Mainframe. Condition is Seller refurbished. Modules and actual unit for sale is pictured. All tubes are premium quality and black plate rca ! There are well over 1200 in tubes alone. This is an amazing and rare unit.


This unit makes great sounds and does some pretty unique waveforms. Technology is rare. I have not even tapped into everything this unit can do. This mainframe is for a museum or collector. I have never known of many of these to exist. These are early computers and predessors of synthesizers . There is a word generator which is a simple sequencer, a prf unit which is basically voltage controlled clock that drives the word generator and pulse oscillators. The voltage controlled clock also have a gate input. There is a signal amplifier also that has an impedance bridge. There is a pulse shaper as well. There is a module to this system not included that I wanted to compete the system that is an early tube sampler and ad converter."