Need some Lampi help please

My Lampi GG2 arrived today. I hope that the Lampi experts on WBF can help address some questions from a Lampi newbie. I’m using Roon and my streamer is the innuous ZENMk3 that is connected to the GG2 via USB.

1) When I try and configure the device in Roon settings and I hit the “Configure” button, The Roon icon spins away with a message “Searching for devices” but never does anything more than this. What’s wrong? Seems like there’s a handshake to be made, but it doesn’t occur. The GG2 was set up for Linux which is what the Innuous presumably uses. Any idea what’s going on.

2) I cannot seem to get DSD Playback Strategy to list “native” as an option. Since the method above is not helpful to configure the device, I have to select Audio from the Roon menu, and then under “Connected to Core” I see “Combo384Amanero”. I then hit the small setting wheel which leads to “Device setup”. I can then see DSD Playback strategy options but I can only play back DSD using “DSD over PCM v1.0 (DoP). There is no “native” option that is visible (which is one of the reasons I bought the device- I assumed I’d be able to play native configuration DSDs). I can indeed play 4X DSD under “DSD over PCM v1.0 (DoP), so at least I’m getting music, but what about native? Am I doing something wrong?

3) Surprisingly, although it seems every manufacturer under the DAC sun is listed as an “identify your device” option under “Device Setup” , Lampizator is not listed. Really? Very discouraging. Again, am I doing something wrong?

4) I have both 242 an PX25 tubes. I can’t say I’m knocked out by the bass of the 242 (relatively big but somewhat bloated and ill-defined) but I assume the tubes are not broken in yet. Any idea how long tube break-in takes? Also, any idea what the PX25 may offer in the lower register that the 242 does not?

Thanks in advance guys.

Marty gg2 - 2.jpg
 
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Comments

dminches

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Oct 22, 2011
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Because you will never understand then what your Lampi can achieve. Just like you wouldn't know what your spreakers are capable of until you heard them with various amps. Or what your TT is capable of until you listen to it with different combinations of carts and arms and phonos. Of course, certain things are difficult to change, such as changing your room for your speakers. But optimizjng a Lampi is one of the easiest things you can do due to the space and budget required. But you have to know first what are the different sonic levels it can achieve based on matching of valves and downstream electronics.
So when I say that I like Tak 300Bs better than PX25s I am wrong?
 

bonzo75

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marty

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Marty , is it the Halo-lll Stabilizer model that you are referring to ?
I use the Halo III (55mm) on the RK KR 5U4G. That is the one that Herbie recommended for a "square" tube such as that particular rectifier. On all other tubes that are bulb-shaped, the Ultrasonic Rx is what I use, again, only because of Herbie's recommendation.

I've been asked "what" and "how many" but I honestly didn't take the time to do a deep dive until recently when I finally spent some time playing with the damping rings on the Lampi.

For the output tubes, Leif's configuration was the best I found for the 242-. I use 3 Ultrasonic Rx rings; one 35mm at the top, 1 50mm around the fattest part, 1 35mm at the base, but I place the base ring at the intersection of the glass tube and the plastic base. Kind of a "twofer" in that spot. I was impressed by the addition of the top ring on the 242. Unmistakable improvement.

For the 5U4G, I'm still testing but so far, I like 2 rings. One HAL-O III 55 mm around the middle and 1 Ultrasonic Rx 35mm around the base/glass interface.
 

Golum

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bonzo75

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But of course :cool:



Many thanks, that's very useful!

There are hundreds of posts done over the past few years. To summarize, the 242 sounds best but often does not sound right due to mismatch with downstream electronics. It is a fussy tube. So you need a couple of backups, PX25 and Lampi.45s are the best of those. Of which Lampi 45 is no longer made. You can always try PX4, 300b, normal 45s, 101d for fun.
 

User211

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Just because KR RK 300B wasn't great doesn't mean some other 300Bs won't be OK or better, I would say.

The new WE reissue will be interesting. Possibly. Maybe. When it materialises.
 

dminches

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Oct 22, 2011
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Such as the Tak 300Bs which are excellent in my Big 7.
 

bonzo75

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Just because KR RK 300B wasn't great doesn't mean some other 300Bs won't be OK or better, I would say.

The new WE reissue will be interesting. Possibly. Maybe. When it materialises.
I have tried KR, RK, JJ, Sylvania, elrog, Tak 300b in the Lampi. And the previous WE reissues as well as Greg's originals. And in amps. The one place the previous WE reissues sounded good were the amps of UK manufacturer art audio who has voiced them with it
 

User211

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I have tried KR, RK, JJ, Sylvania, elrog, Tak 300b in the Lampi. And the previous WE reissues as well as Greg's originals. And in amps. The one place the previous WE reissues sounded good were the amps of UK manufacturer art audio who has voiced them with it
Can anyone spot the mistake in this post?

First to answer correctly wins cred points. Including Ked.
 

bonzo75

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Can anyone spot the mistake in this post?

First to answer correctly wins cred points. Including Ked.
You know that there were WE reissues in the 90s? And now there are some new WE reissues coming up?
 

bonzo75

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Can anyone spot the mistake in this post?

First to answer correctly wins cred points. Including Ked.
Actually, the Sylvania were 6a3 not 300b. I was thinking of Sophia 300b not Sylvania. Those were the ones Grant on this forum used with apogee duetta.
 
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My Lampizator Lite 7 DAC, which is currently being upgraded to a Big 7 Mk2, did native DSD up to 128. Perhaps you should reach out to Lukasz Fikus or, if you're in the U.S., Fred Ainsley.

Good luck with your new DAC!

Best,


Juan
 

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