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NAD C 298 Power Amplifier With Purifi Eigentakt Amplification

Fa11en.Universe said:
Would I get profit by adding C298 as power amp to my 375Bee as preamp?
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That would actually be expected. Do you only want to use one C298 or two in bridge mode?
 
Svend P said:
Why would you think any of that is audible?
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The preamp section of the C375BEE has some specs that are on the edge of being audibly differentiable. It may or may not be audible depending on the rest of the audio environment. Nonetheless, I would not recommend replacing the audio amplifier section with the C298 to get better performance. The preamp section would be less transparent and the C375BEE amplifier specs are not meaningfully different. If the member likes the input options, just keep the whole kit.


 
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Angsty said:
The preamp section of the C375BEE has some specs that are on the edge of being audibly differentiable. It may or may not be audible depending on the rest of the audio environment. Nonetheless, I would not recommend replacing the audio amplifier section with the C298 to get better performance. The preamp section would be less transparent and the C375BEE amplifier specs are not meaningfully different. If the member likes the input options, just keep the whole kit.


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Thanks for your advice. I don't want to sell my 375Bee, because I've got several audio setups, where I can move 375.
Anyway, I think It's time to upgrade my main setup to something better. I'm also looking at NAD 399.
Could it be a better way to move after my 375Bee?
Or should I stick with 298 and any of the standalone pre amps?
 
Fa11en.Universe said:
Thanks for your advice. I don't want to sell my 375Bee, because I've got several audio setups, where I can move 375.
Anyway, I think It's time to upgrade my main setup to something better. I'm also looking at NAD 399.
Could it be a better way to move after my 375Bee?
Or should I stick with 298 and any of the standalone pre amps?
Click to expand...
My point is that the C298 is not better than the C375BEE performance-wise. Getting a separate pre-amp with the C298 will yield measurable benefits only if the pre-amp is very transparent (like the Benchmark models), but the difference may not be audible. What type of inputs are you using?
 
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Fa11en.Universe said:
I'm also looking at NAD 399.
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That would be a modern upgrade, especially with regard to Dirac Live (optional with BluOS).
Personally, I would go for a newer platform, i.e. the Bluesound Node Icon with Dirac Live. Add a Purifi power amplifier and you are fine.
You get the better DAC and power amp section compared to the C399.
 
Hello I am interested in comparisons of this to the Primare A35.2, which i understand has its own class D tech, and looks prettier but more expensive, and to smaller class D specialists like Nord and Apollon. I do understand the distortion of the NAD measured worse than Nord and Apollon units, so perhaps that's all I need to know, and the rest is up to my preference for looks, and details like gain options etc. Thanks!
 
proux said:
Hello I am interested in comparisons of this to the Primare A35.2, which i understand has its own class D tech, and looks prettier but more expensive, and to smaller class D specialists like Nord and Apollon. I do understand the distortion of the NAD measured worse than Nord and Apollon units, so perhaps that's all I need to know, and the rest is up to my preference for looks, and details like gain options etc. Thanks!
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Honestly, I think it's all a matter of the features, reliability, and repair/warranty. They will all sound the same.
 
I am in process of buying class D amp. I like this NAD..but...

I can get this one for 1375 EUR (VAT an shipping included)
https://apollonaudio.com/product/purifi-eigentakt-1et6525sa-st-stereo-amplifier/
In this price range is also boxem..

and C298 for 1999 EUR (VAT an shipping included)...

Sound wise, power, features they should be more/less the same.

I like NAD as big heavy box, well known brand etc. but I also like smaller and lighter box from Apollon. Both available in EU with 2 years warranty)..but I also like 624 EUR :)

Could someone enlighten me why to spend 624 eur more. I am talking about technical reasons.

<PS
or even Purifi 1ET7040SA ST Stereo Amplifier for 1720 EUR... (0pa 1656, 4 gain settings, balanced+rca Inputs.... same as for 1ET6525)

I am not buying amps every day so if there is any reason to spend more...it is OK with me, but would like to know why.
I am open to other solutions as well ! Budget is max 2500 Eur

Thx
 
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ninja1 said:
I am in process of buying class D amp. I like this NAD..but...

I can get this one for 1375 EUR (VAT an shipping included)
https://apollonaudio.com/product/purifi-eigentakt-1et6525sa-st-stereo-amplifier/
In this price range is also boxem..

and C298 for 1999 EUR (VAT an shipping included)...

Sound wise, power, features they should be more/less the same.

I like NAD as big heavy box, well known brand etc. but I also like smaller and lighter box from Apollon. Both available in EU with 2 years warranty)..but I also like 624 EUR :)

Could someone enlighten me why to spend 624 eur more. I am talking about technical reasons.

<PS
or even Purifi 1ET7040SA ST Stereo Amplifier for 1720 EUR... (0pa 1656, 4 gain settings, balanced+rca Inputs.... same as for 1ET6525)

I am not buying amps every day so if there is any reason to spend more...it is OK with me, but would like to know why.
I am open to other solutions as well ! Budget is max 2500 Eur

Thx
Click to expand...

With the NAD you get also all the advantages of an EU warranty and service. Possibly also better resale value. I would suggest you try, and check whether the power supply is still a bit noisy (it should vibrate a bit, some people complained, it is il to you to decide — maybe the issue has been addressed in more recent batches).
 
ninja1 said:
I am in process of buying class D amp. I like this NAD..but...

I can get this one for 1375 EUR (VAT an shipping included)
https://apollonaudio.com/product/purifi-eigentakt-1et6525sa-st-stereo-amplifier/
In this price range is also boxem..

and C298 for 1999 EUR (VAT an shipping included)...

Sound wise, power, features they should be more/less the same.

I like NAD as big heavy box, well known brand etc. but I also like smaller and lighter box from Apollon. Both available in EU with 2 years warranty)..but I also like 624 EUR :)

Could someone enlighten me why to spend 624 eur more. I am talking about technical reasons.

<PS
or even Purifi 1ET7040SA ST Stereo Amplifier for 1720 EUR... (0pa 1656, 4 gain settings, balanced+rca Inputs.... same as for 1ET6525)

I am not buying amps every day so if there is any reason to spend more...it is OK with me, but would like to know why.
I am open to other solutions as well ! Budget is max 2500 Eur

Thx
Click to expand...
Earlier Apollon amps have been positively reviewed here. The difference is likely in the brand, service availability and resale - all of which are commercial, not strictly technical, reasons.

www.audiosciencereview.com

Apollon NCx500ST Stereo Amplifier Review

This is a review and detailed measurements of the Apollon NCx500ST stereo class D amplifier based on Hypex NCOREx NCx500 modules. It was kindly drop shipped from the member and costs 1,090.00€ (US $1,168) with standard opamp. While the case is stamped aluminum, it is a heavily customized one...
www.audiosciencereview.com www.audiosciencereview.com
 
mocenigo said:
With the NAD you get also all the advantages of an EU warranty and service. Possibly also better resale value. I would suggest you try, and check whether the power supply is still a bit noisy (it should vibrate a bit, some people complained, it is il to you to decide — maybe the issue has been addressed in more recent batches).
Click to expand...

This is price for NEW NAD, so obviously a new batch ?. Warranty is 2 years for Nad. It is from local dealer . NAD EU warranty is also 2 years,a and valid only for purchaser; not transferable..

Apollon have 2 years warranty, with option of 3 extra years (total 5 years) for 10% higher price. (aprox 1550 EUR) (Apollon is 2,5 hours driving from my place...)
 
ninja1 said:
This is price for NEW NAD, so obviously a new batch ?. Warranty is 2 years for Nad. It is from local dealer . NAD EU warranty is also 2 years,a and valid only for purchaser; not transferable..

Apollon have 2 years warranty, with option of 3 extra years (total 5 years) for 10% higher price. (aprox 1550 EUR) (Apollon is 2,5 hours driving from my place...)
Click to expand...

Of course you have an european warranty with Apollon as well, and they are good. I know them well, I am a former customer and the only reason I left them is because I built my next amp myself for fun. I can definitely recommend them. However, they are a small business and they may require a longer time to handle a repair. This said, if you are geographically close to them, do not hesitate: purchase from them.

At least you know you will have no problems with the power supply!
 
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Just bought a used one that was made in feb 2021, works beautifully and no hum unless I plant my ear on the case and then I can hear a slight power supply hum, this is normal right? When I try to check the firmware version it says 2.01 and the auto shut off only seems to be working at a 50% clip, should I use a 12v trigger instead? It’s going in to a wiim ultra.

Separate question for anyone using high level input from a rel with the floating ground, is this safe to do on the amp?
 
Mastabassa said:
Just bought a used one that was made in feb 2021, works beautifully and no hum unless I plant my ear on the case and then I can hear a slight power supply hum, this is normal right? When I try to check the firmware version it says 2.01 and the auto shut off only seems to be working at a 50% clip, should I use a 12v trigger instead? It’s going in to a wiim ultra.

Separate question for anyone using high level input from a rel with the floating ground, is this safe to do on the amp?
Click to expand...

Yes, a slight hum from that power supply is known, and while some people complained at the beginning, I see the amount of comments reduced, so NAD must have addressed the issue somewhat. If you cannot hear anything from your usual listening position, then it is fine.
 
Welcome to the C 298 club Mastabassa,

You might want to check to see if Auto Sense is turned on and check the Auto Sense Level setting (three position switch on the back).

Check the Auto Stanby setting too.

FYI after changing to a different preamp on one of my C298s, it kept going into Auto Stanby despite receiving an input signal and using 12V trigger cable. What's weird is that having Auto Sense and Auto Stanby turned on didn't cause any issues with the previous preamp w/12V trigger.

Good luck, Martin
 
mocenigo said:
Yes, a slight hum from that power supply is known, and while some people complained at the beginning, I see the amount of comments reduced, so NAD must have addressed the issue somewhat. If you cannot hear anything from your usual listening position, then it is fine.
Click to expand...
Yeah I definitely cannot hear it from my usual listening position, I need to put my ear right against the chassis and listen for it
 
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