wasp131
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- May 9, 2009
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I thought the se model used a different tube from the std 337,the site says they run the same.
Originally Posted by Skylab /img/forum/go_quote.gif I believe they made a cut-and-paste mistake on that site, unless they have made a change. The 337SE was using the 6BX6/EF80 for driver tubes instead of the 337's 6SJ7. Electrically those tubes are basically the same, but the 6SJ7 is octal-base, and the 6BX6 noval. |
Originally Posted by dBs /img/forum/go_quote.gif Well I have some Tung Sol 6SJ7GT mesh plates and RCA 6AS7G's coming in. Hopefully my 337 will be shipping tomorrow or Monday (in China time). It's all coming together. "eeeeeexcellent!" |
Originally Posted by dBs /img/forum/go_quote.gif Just got the 337 in along with the RCA 6AS7G tubes. This is exactly the kind of sound I've wanted, wow. I would say that I am a tube convert XD. There are some intermittent pops that seem to be going on that are pretty distracting. I have isolated out my computer as the problem and I am confident my Compass isn't as I have been listening to that for a long time without this issue. It's something to do with the 337, possibly the tubes (hopefully the tubes since that's an easier fix). Maybe it's a common affliction that is due to a new analog amplifier product needing to be broken in? I also was forced to get a bit ghetto with the power plugs so that could also be a cause of the problem. Despite the pops, it sounds incredible. Emphasis in the areas I've always wanted it, perfect. I'm still running the Chinese 6J8Ps and it hasn't burned in yet, so I suspect it will only get better from here. Especially once the pops are taken care of. I'm listening to a brand new musical infatuation for me--Aurosonic - Always Together album--and it sounds amazing. The album uses a lot of piano and female vocals and it really makes the two sound amazing. I gotta get back to work XD I will be wishing I was home all day though listening to this. In the mean time it will be burning in! BTW, I looked at the internals and it is using the newer 2009 variant (whole row of green capacitors towards the front). No preamp. |
Originally Posted by dBs /img/forum/go_quote.gif Ok, I isolated each channel on the 337. As it is dual mono from PSU to output jack the pops should only be on one channel. They weren't, the pops were in both channels. That means it isn't the 337. I also changed the 6N5P tubes back to the Chinese ones and the pops were still there. The problem is outside of the 337. I put in the Earth HDAM into my Compass today (have been using the Moon for many months now) so maybe that is the problem. I will have a listen from my compass directly and see if the pops are there. Yep, sure enough, pops out of the compass directly. Man those pops sounded soooo good on that 337, hahaha. Amazing what the 337 can do just with pops! Means its either my computer (foobar2000) or the HDAM. |
Originally Posted by gbacic /img/forum/go_quote.gif I wonder if yuking will redo the 337 for La Figaro and release it as a competitor against the LD MK VI / MK VIII. A balanced darkvoice would be amazing |
Originally Posted by Pricklely Peete /img/forum/go_quote.gif dbs what source are you using (SC or on board audio of the mobo ?). Three things come to mind, the pins on the NOS tubes may need cleaning, the Earth HDAM may not be fully seated (or making poor contact in the DIP8 socket) or the SC/media player buffering/cpu load on the USB bus may be producing this noise. How many USB devices do you have on this computer ? Of the 3 mentioned I willing to bet it's the computer. What software player and driver are you using ? What connection to the Compass are you using (from the source) ? Can you use another digital input on the Compass to narrow down the possibilities please. A stand alone CDP would rule out the DAC and the 337 fairly quickly if you can get a hold of one (and a COAX digital cable) if it plays cleanly of course with the stand alone CDP. What operating system are you using, how much ram do you have installed and what CPU are you running ? Peete. |