Question about NAD C350 2-Channel Amplifier

2 Answers

NAD C340 only the cd input operates properly. choose any other input and you only get one chanel of it.

Posted by on


2 Answers

Have the same problem. Found some info here on the chip that's probably blown..

Posted on Dec 28, 2007

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.


    An expert who has written 20 answers of more than 400 characters.


    An expert who has answered 20 questions.

  • Contributor
  • 31 Answers

Hi There,

In a sound system there is an input selector switch which just connects the input socket you want to use to the "common" amplifier electronics inside...You say that the CD is fine so in this case it must be a faulty selector switch or broken copper tracks or wires inside the chassis electronics which connect those inputs.. through the selector switch to the amplifier circuitry.

The fault lies between the selector switch and the input sockets that dont work.....Not the CD one of course... thats fine..

Cheers From YUBEUT

Posted on Nov 16, 2007


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

C340. Why do inputs switch to either tuner or tape2 monitor on their own, albeit intermittently?

Probable answer? Dirt..Sometimes you can get poor contacts working again by gently working the switches 50-60 times
with the device off. If this procedure fails Use a good contact


Jan 31, 2016 | NAD Audio Players & Recorders

1 Answer

Cracking noise nad c340

Sometimes you can find the faulty part by touching the parts inside the amp. Only touch the plastic parts not any metal parts! As it is on one channel you have a good channel to compare the bad. Often small transitors can become noisy so start with them!

Nov 18, 2012 | NAD C340 Integrated Amplifier

1 Answer

My NAD C320 outputs a very low sound volume

Hi there I have a C340 that has similar problem, you must have bought this from ebay, lol.

Nad made a mistake on the C range, the pre - power link can be shorted out. if the pre is shorted out it takes out the pre amplifier stage, I have managed to get the right channel working, I will keep you informed what is the cause of the left channel. I have replaced the pre-amp IC and a couple of Jfets and transistors. Once I have repaired the Amp I could repaire yours if you like???

Apr 14, 2012 | NAD C320 2-Channel Amplifier

1 Answer

Unsure of connections from nad c340 to power amp, cant get both speakers working

It sounds like you're guessing.

Have you looked at the manual?

Register and download the manual for free at

Page 7.

Tell us about the source(s) that won

Mar 25, 2011 | NAD C340 Integrated Amplifier

1 Answer

NAD C740 Chanel B Speakers not working The speaker output A is working properly, then the output B is completely silent. I install differents speakers and even the same speakers. no sound from the B...

possibly the causes are: 1. defective channel B power amp board. But try operating first with the built in tuner, if it's ok the RCA cable from your other sources(DVD player, etc...) might have broken internal conductor.
2. if it has the speaker switch(A, B, A+B) try toggling it, might also just loose contacts.
if the trouble is #1, leave everything to your trusted qualified technician, he knows what to do, unless you want to tweak/repair it by yourself...hope this helps ;-)

Feb 03, 2011 | NAD C740 Receiver

2 Answers

I have a NAD 510 CD player with no display lighting working and would like to repair this myself, and also a NAD 710 receiver/amp that does not tune in any stations but otherwise works fine, would it do...

wont do any harm to open it up. look for blown fuses. i have a NAD amp and the desplay goes blank and sound distorts when there is a blown fuse inside, my amp has abourt 8 fuses inside it 4 per chanel

Jan 04, 2010 | NAD C521 CD Player

1 Answer

What is the maximum speaker wattage for a NAD c340 integrated amplifier?

The specs say 2x50W into 8 ohms. I could not located the 4 ohm specs, but it is logical to assume that you can run 2x100W into 4 ohms.

The back panel seems to imply that 4 ohms is a limit for speakers.

So any speaker over 100W capability should be fine, either 4 ohms or 8 ohms.

Oct 30, 2009 | NAD C340 Integrated Amplifier

1 Answer

Need a transistor spare part for NAD C340

Odd a transistor would have such a #. No 2Fanything series. It is most likely a 2SA949.... a PNP audio driver transistor.
It can be replaced by a NTE-383 (ECG383) transistor, though it's best to order the original # from a Japanese semiconductor supplier like MCM in Ohio.
It's best brought to a good hi-fi or guitar amp repir shop for a proper go-thru & repair.

Mark S. CET Sr. Dover, NH

Nov 06, 2008 | NAD C340 Integrated Amplifier

3 Answers

NAD C340 has lost ability to switch between inputs

I have the same problem which started about a month ago and seems to be getting worse. I also noticed today, that 1 channel is significantly louder than the other - fault in the pre-amp stage, as feeding the power stage directly gives balanced, albeit extremely loud sound! Looking on eBay, I found someone else selling an amp with both problems. It would nice to think that NAD would acknowledge a design flaw, and fix for free, but my amp is 5 year old.

Jul 14, 2007 | NAD C340 Integrated Amplifier

Not finding what you are looking for?
NAD C350 2-Channel Amplifier Logo

Related Topics:

326 people viewed this question

Ask a Question

Usually answered in minutes!

Top NAD Audio Players & Recorders Experts


Level 3 Expert

5318 Answers

The Knight
The Knight

Level 3 Expert

75025 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a NAD Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides