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Audio Video Receiver (1998-99)

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Tuning range: FM, MW

Power output: 120 watts per channel into 8Ω (stereo)

Surround output: 120W (front), 120W (center), 120W (rear)

Frequency response: 10Hz to 50kHz

Total harmonic distortion: 0.05%

Input sensitivity: 2.5mV (MM), 150mV (line)

Signal to noise ratio: 75dB (MM), 82dB (line)

Output: 150mV (line)

Speaker load impedance: 4Ω to 16Ω

Digital inputs: coaxial, optical

Video Connections: composite, SVHS

Dimensions: 430 x 160 x 410mm

Weight: 16kg

Accessories: remote control

Year: 1998


schematics   English -

instruction/owners manual   English - Jeepo65

service manual   English - Ivy Caudieus

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re: STR-DA50ES


Would anybody know if you can use the STR DA50ES as a power amp? I would like to hook an all valve Pre up to the thing.



Popping and Static!! Please help

Got the STR-DA50ES. Works great except when we put it on TV/DBS which activates the 5.1 surround, the audio pops really loud and very static-y. All the speakers work great and make no noise on the other channels. It is just the TV/DBS and 5.1 that does this. Can anyone give me any advice?

UPDATE: it seems that this happens no matter what "sound field" it is on .. . cinema. . .rock house. . .etc. Any ideas?

service manuals

Amasing, I finally found good quality help. Thankyou all for your collective efforts. It is appreciated.

STR-DA50ES will not turn on

My STR-DA50ES will no longer power on. I opened the case and checked every fuse I could find, but they were all good. Any suggestions?

No 5.1 sound out of my Sony STR DA50ES

I just connected my new OPPO Bluray/SACD player to my Sony STR DA50ES. HDMI to the Sony XBRTV & Digital Optical Cable to the Sony DA50ES.

The picture and sound out of TV is great but no sound out of the speakers. the Receiver display panel shows the Digital Optical connection but then shows "Unlock". I don't have the owners manual any more and this is bugging me because I know it is something simple.

I have had this unit for 15 years and it has worked great. I have compared it with top of the line Pioneer Elite, and mid level Dennon, and it performed better. So, I don't want to get rid of it yet.

Any help would be greatly appreciated.


Ensure that the Digital out

Ensure that the Digital out from the Oppo is set to Bitstream(via its menu)and the Sony is set to "Auto Decode"(Via its Menu). The Sony should automatically detect the bitstream. If not perhaps try changing the cable ie a new optical or go the coax route. I had a DA50ES many years ago and it was a great home theatre unit.

5.1 Sound

Hi Ashena,
Do you get an solution for this problem.
I heve the same.
Thanks Hans


My STR-DA50ES has stopped producing sound, at least now I stand a chance of finding out what might be the problem.

Thank you to whoever posted this. You are a great person.


Suddenly no sound from STR-DA50es


I have a similar issue with my DA50es. Did you figure out your issue, and if so, what was it?

I've had several loud pops, followed by no sound output, where a power off/on solved the issue. Now, no sound output at all, regardless of input, surround sound mode, etc.



Service manual

Same here. Greatly appreciated...

Thank You

To the kind soul that supplied this service manual.

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