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Zero000 · Sep 17, 2018

abeidrov said:
Thanks a lot for the advice! I will try Rothwell attenuators. I guess a "source" option would be a better choice, as I will be able to connect them to the output sockets of the DAC and it will not affect other sources.

Yes.

Unfortunately I think you may find you will lose some sound quality with the Rothwell's in place, especially with other lower output valves.

I definitely found that to be the case. It feels like you can't make up for what you attenuated earlier by increasing the preamp gain to compensate.

Therefore, the attenuation needs to be minor, and of the best quality you can find. Better quality, I think, than the Rothwell's provide.

That's why I went for the best resistors I could get i.e. the silver AN tants.

Try them, though. They're so cheap it is worth you seeing if you agree with me. You may not - but I doubt it

abeidrov · Sep 17, 2018

User211 said:
Yes.

Unfortunately I think you may find you will lose some sound quality with the Rothwell's in place, especially with other lower output valves.

I definitely found that to be the case. It feels like you can't make up for what you attenuated earlier by increasing the preamp gain to compensate.

Therefore, the attenuation needs to be minor, and of the best quality you can find. Better quality, I think, than the Rothwell's provide.

That's why I went for the best resistors I could get i.e. the silver AN tants.

Try them, though. They're so cheap it is worth you seeing if you agree with me. You may not - but I doubt it

You may be right. I gave it another thought, now I am not sure if understand, what would be an advantage of the “source” version of the attenuators. If I get the normal version, I’ll connect them to input sockets of the preamplifier. The result would be the same.

ingemar · Sep 17, 2018

Go for the audio note silver resistors,i will:b

Sablon Audio · Sep 18, 2018

Excellent though the silver tants are, it would be worth experimenting with something dramatically cheaper like the Takman metal films to find your preferred value. These already sound very good (quieter and better defined than the carbon version) and help avoid the sonically detrimental impact of cheap rca connectors used by external adaptors like Rothwell. Am presuming you guys are just using / planning on using the resistors on the hot leg rather than negative also?

ingemar · Sep 18, 2018

Is it not a good idea to make a voltage divider with one res on each leg?

Sablon Audio said:
Excellent though the silver tants are, it would be worth experimenting with something dramatically cheaper like the Takman metal films to find your preferred value. These already sound very good (quieter and better defined than the carbon version) and help avoid the sonically detrimental impact of cheap rca connectors used by external adaptors like Rothwell. Am presuming you guys are just using / planning on using the resistors on the hot leg rather than negative also?

Sablon Audio · Sep 18, 2018

ingemar said:
Is it not a good idea to make a voltage divider with one res on each leg?

Agreed but I think people have simply been using them in series on hot output. Lampi dacs typically run quite hot on the output voltage, up to 6v rather than the 2v standard

ingemar · Sep 18, 2018

Sablon Audio said:
Agreed but I think people have simply been using them in series on hot output. Lampi dacs typically run quite hot on the output voltage, up to 6v rather than the 2v standard

If i go for 2 watters that must be ok,or?

Sablon Audio · Sep 18, 2018

ingemar said:
If i go for 2 watters that must be ok,or?

Whilst I'm sure 2w is ample, you might want to clear with Lampi first so no impact on warranty. They may be able to advise on impedance values also.

ingemar · Sep 18, 2018

Sablon Audio said:
Whilst I'm sure 2w is ample, you might want to clear with Lampi first so no impact on warranty. They may be able to advise on impedance values also.

Will do and thank you!
Kindly/Ingemar

bonzo75 · Sep 18, 2018

Also make sure what changes you do are easily reversible

Zero000 · Sep 18, 2018

The resistors Lampi installed in mine were 0.25 Watt Takmans (well they looked very like them, if not some other cheap generic high tolerance metal film). They definitely sound OK, but AN tants they ain't. Rothwells don't sound so great. Really, but some of that was the too high a level of attenuation being applied. To be frank, they were unusable at the 15 DB version.

There is more info and pics here if this link works. On my mobile so unsure. Go to the end of the thread and work backwards.

https://r.tapatalk.com/shareLink?url=https%3A%2F%2Ftheartofsound%2Enet%2Fforum%2Fshowthread%2Ephp%3Ft%3D32378&share_tid=32378&share_fid=4177&share_type=t

bonzo75 · Sep 19, 2018

So, is anyone planning to buy the 2000 USD elrog 242?

Zero000 · Sep 19, 2018

bonzo75 said:
So, is anyone planning to buy the 2000 USD elrog 242?

Marc was on about it...

It's a 211 it ain't no KR 242 - completely different valve. Looks bodged together. Better of with a pair of STC 4242 if you want some molybdenum plate 211s IMHO. At least they knew how to work with it!

bonzo75 · Sep 19, 2018

No there was a 242. Not 211

bonzo75 · Sep 19, 2018

Ah I see what you mean http://vinylsavor.blogspot.com/2016/12/elrog-er242c-211-with-molybdenum-plate.html?m=1

dctom · Sep 19, 2018

slightly off current topic - as a matter of interest

has anyone had success using sp/dif or AES rather than USB with the GG?

heihei · Sep 19, 2018

I use the SPDIF input on my GG2 - in fact most of my listening has been done via this. Sounds v good. Not done direct comparisons to USB using the same server though.

dctom · Sep 19, 2018

thanks heihei, can you use the spdif input with DSD files?

heihei · Sep 19, 2018

No - pretty sure that has to be USB

dctom · Sep 19, 2018

Thanks again

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