Quote: This is where I disagree. I listen to speakers from time to time, which provides a really good, airy sound stage, but that goes without saying. The HD800 tends to emulate this kind of sound stage and airiness, so much so that there have times when I thought my speaker rig was still...

I wasn't really arguing with you, just echoing some of the voices in this thread. However, I don't think you can really compare the HD800 with the LCD-2 as their aims are actually very different. If Audeze's aim was to emulate and in some ways surpass the Sennheiser sound, then I would give you...

Quote:   Just to echo what everyone else seems to be implying...   This assumes that there is one, and one alone, sound signature that everyone is striving for, which is simply untrue. For some audiophiles, a completely neutral frequency response is the goal, allowing them to hear a...

I built a 3-channel Beta 22 with a gain of 5 for the boards, and it is more than loud enough for anything I have tried it with (HD800, HD650, LCD-2). Remember that when you go balanced, the gain is doubled. So if you use a gain of 5 for each board, using them in a balanced configuration would...

I have been listening to my new LCD-2 for almost a week now, and I have not come to a clear verdict yet as to whether or not I will keep it. It presents a very different sound signature than what I am used to.   On the positive side, the LCD-2 sounds much more natural than any of my previous...

Nice build, LeMat. What did you use for the cases? The volume knob looks like a GoldPoint, but how did you fashion the lighted ring?

I get this problem every so often. I use hair gel, and some of this gets on the headband and makes it sticky. All I do is wash it off with plain old water. Really, you aren't going to hurt it.

There are a number of possible reasons why you might find the HD650s uncomfortable/fatiguing, but here are the big ones:   1) Clamping pressure While there are definitely harder-clamping headphones out there, the clamping pressure from a new set of HD650s is still fairly strong and can...

Guess what? I de-soldered the trim pots for all of the boards and put them in the right way, and everything works now! Everything checked out during the initial setup.   Now I cannot stop listening to it. The music just flows effortlessly.   I want to give a big shout out and thank you...

It appears I put in the trim pots in backwards, as Anonanimal guessed. I had assumed that the marking on the board should have matched up with the arrow symbol on the trim pot, but it seems that marking was referring to the position of the control screw. I verified my mistake by checking the...

I took your advice about using a multimeter and confirmed that there were no issues regarding the heat sink and mosfet mountings. I haven't had a chance yet to investigate the main problem yet, but hopefully I will have sometime in the next few days.   I did have time to take a hard look at...

  Thanks for the info guys, but what I was really referring to were the screw holes which connect the heatsinks to the PCB, not the mosfets to the heatsinks. As per the instructions on the AMB website, I did not use isolation pads between the heatsinks and the mosfets because the heatsinks...

  Unfortunately, the smoke that I did see at first was very small, and now I don't see any more after turning on the power. I am really afraid I am going to do some major damage to other parts if I leave the power on too long due to the ridiculous amount of heat coming from the heatsinks.  ...

Quote: The heatsinks on the Sigma 22 are cool with nothing connected. I didn't notice any smoke for the first Beta 22 board, but I did notice a smell. Perhaps something was burning? I went ahead and tried hooking up another channel and I had the same problem: really hot heat sinks...

Well, I finally finishing stuffing the boards and wiring everything up, but now I have problems with the initial setup.   Without any of the Beta 22 boards connected, I get approximately 29 volts (positive and negative) from the Sigma 22. However, when I connect the first Beta 22 board...