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  #11  
Old 05-14-2014, 08:28 AM
S1chen S1chen is offline
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Originally Posted by kleinbje View Post
I'll check them out. I talked to Vladamir Lamm and he stated the SUT in the LAMM should be perfect for the lyra, though the spec would imply a lower impedence 10-15 rather than the LP2's 40ohms. I have plenty of Gain and zero noise. What should I be listening for as a result of the decreased load on the cartridge? I don't seem to have any ringing or treble anomalies/harshness. I am loving this preamp. Insanely good. Does anyone know which direction the current across the fuse goes?

Jeff
If you don't hear a problem on the build in SUT, just leave it and enjoy it. It should be enough gain for the medium output Lyra cartridge. Only if you have more budget and wish to get even better resolution, you can add the external SUT.
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  #12  
Old 05-14-2014, 10:33 PM
fjn04 fjn04 is offline
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Yes- Great phono stage. As Vlad states, you should be fine with the Lyra's. If you ever drop down to 0.4 ohm or below, then an SUT would make sense.
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  #13  
Old 05-16-2014, 02:23 PM
kleinbje kleinbje is offline
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actually.. My Kleos Sl is .25mv
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  #14  
Old 05-16-2014, 07:00 PM
fjn04 fjn04 is offline
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I ran a Koetsu, and also a Low output Benz in to an LP2 some years
ago. I think it lacked a sort of dynamic jump factor w/ them. I can't speak for your Lyra, and it's .25 mv rating. What I can say is, I wish I tried an SUT at that time. When I heard a .6 mv Shelter at my dealers, it was a nice match w/ the Lamm.
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  #15  
Old 05-17-2014, 01:30 PM
kleinbje kleinbje is offline
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Can anyone tell me the orientation of the fuse? Current runs toward the edge of chassis or center? Thanks, came with a hifi fuse and I didn't notice it had a polarity until it was too late. Also I just got some 417a's, I know they should improve on the Amperex 5842 in there now, but I was curious about changing the rectifier tube. I know it converts ac to dc and can limit current in amps, but a phono pre I think would have very low current draw. Anyone hear changes in a phono pre when changing rectifiers? Thanks
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  #16  
Old 05-21-2014, 06:39 PM
kleinbje kleinbje is offline
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I put in the WE417A's, wow they are impressive. Much better bass, and space, maybe more noise but still crazy quiet.
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  #17  
Old 05-23-2014, 04:45 AM
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Syntax Syntax is offline
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Quote:
Originally Posted by fjn04 View Post
I ran a Koetsu, and also a Low output Benz in to an LP2 some years
ago. I think it lacked a sort of dynamic jump factor w/ them. I can't speak for your Lyra, and it's .25 mv rating. What I can say is, I wish I tried an SUT at that time. When I heard a .6 mv Shelter at my dealers, it was a nice match w/ the Lamm.

That wasn't a problem from the internal gain (59.5dB) of the LP2, that was a problem (not perfect matching) from the output LP2 into input Preamp (the signal into Pre got weak and needed another amplification, but lost is lost)....some compensate this his a stronger cartridge but it is a compensation. Seems it works great with 0.25mV (also my experience with it) and the Naim Preamp.With the right Preamp match even 0.20mV MC's are no problem. The LP2 is done very well. True in tone, soundstage and holographic body... much too cheap compared to other Phonostages when you look for the real thing reproduction :-)
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  #18  
Old 06-08-2014, 07:15 PM
kleinbje kleinbje is offline
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I have been rolling some 6X4's in my phono pre. One single FW rectifier tube. It came with an amperex from the 70's, I rolled in a GE from '52 NOS, everything just seemed better. The amperex had detail, but it was like being at a museum, no groove, didn't rock. The Ge's were spacious, just huge soundstage, slightly more noise than the amperexs, but damn quiet. Being shocked at the difference a rectifier tube( a****indiode!) had on the sound, I ordered a bunch more tubes, the ge was bought just to have a backup in house. I picked up a sylvania in a yellow box, cant find the date code, I rolled that in last week. Wow!! The difference was startling. The vocals are much more present and "thick", the bass is way deeper, and this is not hyperbole , I am talking resonances where there never were any at the same volume level. The sound stage is a bit smaller, but still big, it seems to be quieter than the GE. It really rocks though, it just presents music with more of that x-factor that keeps you engaged. I have 2 RCA's and another 2 GE's to try, it is really startling the difference in sound between these tubes. It seems when I changed 6922/7308's in my Chinook the differences were much more subtle, though I was comparing very high grade tubes and my system is much more revealing with the Lamm. Looking for advice and recommendations
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  #19  
Old 06-08-2014, 07:22 PM
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cmalak cmalak is offline
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Quote:
Originally Posted by Syntax View Post
That wasn't a problem from the internal gain (59.5dB) of the LP2, that was a problem (not perfect matching) from the output LP2 into input Preamp (the signal into Pre got weak and needed another amplification, but lost is lost)....some compensate this his a stronger cartridge but it is a compensation. Seems it works great with 0.25mV (also my experience with it) and the Naim Preamp.With the right Preamp match even 0.20mV MC's are no problem. The LP2 is done very well. True in tone, soundstage and holographic body... much too cheap compared to other Phonostages when you look for the real thing reproduction :-)
Or perhaps it's correctly priced and competing amps are much too expensive relatively speaking for what they deliver for the price compared to the LP2

Ok...sorry for the intermission, back to the regularly scheduled programming...
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  #20  
Old 12-06-2014, 07:19 PM
Tax Tax is offline
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I am a LP2 user for approx 3 years.

My observations based on my experience for any other owners or potential buyers is as follows;

. The Jensen 31dB SUT which is optional through Lamm or available aftermarket is a must if you intend using cartridges with 0.4mV or lower output. It makes a big difference in dynamics. Trying to address what is lost in the phono by increasing the gain or volume on a separate preamp is not the same has having the higher output SUT installed on the LP2's MC stage and feeding that to your preamp.

. Changing the two 0.47uF capacitors before and after the second set of tubes to V-Cap CuTF or Duelund's or other similar cap (depending on your taste and system synergy) brings the LP2 to a whole new level.
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