Anyone know if the HiFiMAN HE-5LE would go well with the 332?

I am trying to do this to my h120 but when I try to flash to ROM i get a message 'incompatible bootloader.' I'm using bootloader version 6. Where do I get a more recent one that will be comaptible?

Here' some notes I took a while ago. "6J1 x 2 6C19 x 2 The MULLARD M8100s are very good valves. If you can't get your hands on another pair, look for other members of the same tube family - the CV4010 and EF95. The CV4010 is the better of the two - "CV" stands for Common Valve, a British...

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We have to face it. Many report hum with this amp. I think a solution may be to fit attenuation before the output to phones. I expect this may be simple for an expert.

My experience matches that of nor_spoon.

Quote: Originally Posted by afgeneral It's actually quite normal for inexpensive transformers to hum like this. These are mechanical vibrations of the transformer laminations, and to a certain extent, transformer windings. Transformers are still manually impregnated even with...

Quote: Originally Posted by mybeat I have hum coming from transformer only if i put my ear really close to it, from 4 inches its dead silent. Did you try swaping the tubes? What's your source? I had a hum problem because of my mic was plugged in the same soundcard as my amp was...

Can someone do me a favour? Can you switch on your 332, and place your ear 4 or 5 inches from the transformer? Do you hear a hum? What I get through the phones sounds like that. I think I hear transformer hum rather than tubes.

Thank you for the suggestions. I've ordered some Caig ProGold. I hope it helps. I don't think the problem is interference, as I get it wherever I put the amp.

Quote: Originally Posted by Gradofan2 I don't know where you got the impression the DV332 has hum??? It doesn't - its silent. Perhaps, some folks have had some bad tubes, or a ground loop... but... with good tubes, and elimination of the ground loop... it has no hum. I...

I bought a pair recently and love them. They wont be as good as the 595s, but their noise cancelling abilities make them very enjoyable for travel, so they are the best value solution for that. Sound is apparently virtually the same as Bose Quiet Comfort, but at a fraction of the price.

OK. After opening up and finding nothing obvious, I tried changes to various combination of mains plugs, sockets and trailers and found a combination with which the hum has ceased. Perhaps there was some kind of loop with my power amps. Anyway, great to listen now with the inky blackness Godkin...

No. I've got good tubes in. I think I'll open it up and have a look.

Quote: Originally Posted by Gradofan2 If you could figure out what's causing the problem - you could likely repair it yourself. It may be nothing more than a loose wire (grnd wire, perhaps) in one of the tube sockets (since they're so fragile and some are so loose that you might have...