I think you may be right. I've had no issues with mine.

No, they sound OK, but with hindsight, they do seem to sound better after a couple of weeks use. Again, very subtle difference, but I don't believe I imagined it.:confused:

I found them much "warmer" sounding than most of the "chip" op amps I have tried. I find that I can listen for hours without getting fatigue. They did take a week or two before they "settled in". Don't expect miracles though - the differences are subtle, but I have found them pleasing. I'm...

Yes, and it's easily accessible.

Yes, I've got them installed in a topping D10s and I've put one in a very old QED digit DAC. They both sound great and I have tried a lot of different op amps but at the moment I'm very happy with the performance of the Oracles. I may swap them out for something different in the future just to...

I got my Oracles from here and they arrived really quickly......... https://www.ebay.co.uk/itm/274945928158?var=575225555435

Great. I found they continued to improve for a couple of weeks after putting them in my DAC.

It is a 1 amp fuse I believe. (see page 6 of this... http://www.popular-hifi.com/projects/nad_stereo/little_dot/little_dot_mk2_manual.pdf )

I bought the Oracle-02 and to me there is a definite improvement in sound quality. I've tried various op-amps and they all have their pros & cons, but I've had the Oracle in for about 3 months now and am happy with the sound. I may swap them out and try other op-amps for comparison and...

MIKELAP has done a really good tutorial on home made C3G adapters on this page 553 of this thread.

Yes, a single cask Laphroaig matured in a port cask!

Thank you so much for the replies. It makes sense now and has reassured me that all is OK. I guess it is just something that I had never noticed before, so started to panic! I now need to go and have a whisky and calm down!

Can anyone help? I am running my LD MK2 through my amp. I have a NAD 320 and have the LD between the Pre-out and Main-in which seems to work fine. Discovered last night that if I turn the LD off while leaving the amp and source playing, the sound fades away as you would expect, and then comes...

You should find the Russian 6N6 will add something to the sound, although not quite as much as the driver tubes. I am running the same combination at the moment. Whether or not it is a "better" combo or not, but I also like the Yugoslavian 6HM5s (tall version) for an interesting alternative...

That's where I got my adapters from! Perhaps I ought to open mine up and see what they look like inside.

Try making the gain higher. Just a thought, but it seemed to work with mine, so worth a try. Good luck.

Yes, I found that the C3Gs had a hum to them so I connected a thin piece of copper wire from each aluminium case to one of the screws on the front casing of the LD2. Works fine now without the hum. Hope this helps. Oh, and I got a really loud buzzing sound when the LD was on the lowest gain...

I also got some Brimar EF92. They sound much more "rounded" than the EF91s so if you manage to find some, I would also recommend those.

I just bought some. They sound pretty good, but did notice the bass can be "slack" as mentioned in the review on page 1 of this thread. I did find the detail pretty good though. Would definitely recommend trying them if you can find them at a decent price.

Actually, I'm not sure whether the "SE" version of the MK3 (if that's what you have) does take 5654. There should be someone else on this thread who can advise on this hopefully

I think the MK111 DOES take 5654 tubes https://drop.com/buy/littledot-tube-amp

The jumper setting for the C3g to 6AK5 adaptor is EF95.

https://www.ebay.co.uk/itm/Vintage-Siemens-C3g-Post-Rohre-for-High-End-Audio-Tube-Preamplifier-Nib-NOS/124164478967?hash=item1ce8c797f7:g:9N8AAOSwLydegidu

Not sure what you mean by "grittier". I found the tube sound definitely warmer and clearer,. The Voskhods have a slightly "brighter" sound compared to some other tubes , but I'm not sure I would describe them as gritty or dirty sounding. I wonder if there is some other issue going on with your amp.

Possibly Mike, but there seems to be a slight hum now when using the Mullard 8100s. It's not earth-shattering, but I notice it in the gaps between notes on quieter pieces of music. Maybe it is just something that I am only just noticing now that I have the Gain up higher than normal. And I...