penmarker

Better to use XLR, no issue with shorting outputs when plugging in too.

Since its 4.4mm and not 3.5mm or 6.35mm, how will it be backwards compatible?

Wewlad. Glad I didn't get them yet. Thanks a lot. I got some BOMs but I didn't check the power rating. So would it be ok to use resistors at higher rating?

Any drawbacks if I use resistors rated at higher power? For instance the 50Ω resistor at 1/8W costs 4X higher than the 1W counterpart. Also, just a thought. How bad is it to have long flying leads to the front panel for the feedback resistors so I can make a gain switch? Or is it just better to not do it.

Sorry if this is off topic, but what are balanced differential amps? I think I understood it when it comes to balanced studio monitors where one of the the balanced inputs gets inverted so common mode rejection will reduce noise. Headphones however usually has +ve and -ve pumping push-pull straight to the drivers. How would a differential amp work? Or maybe mention some balanced differential headphone amps and I guess I can go from there.

Ah ok that's enlightening. Here where I'm from, Multicomp resistors are cheaper compared to Dale at similar tolerance, value, and rating. But not much, maybe only 3/4 or 2/3 the price. We're talking cents here not dollars.

He can't, because they've already established relations with HF. HF hates SBAF to the core. You can't even link to SBAF in HF threads. I did it once and I got a pm by a mod saying I can't do some things. Imagine hating another forum which has I think less than a quarter for your traffic, and then seeing your good friend go there to market his products. HF is gonna do a temper tantrum. They salty as fuck.

I'm inexperienced with builds but can I just check with you how hot are the heatsinks? Are all of the output transistors fastened tightly against the heatsink? Do you have proper thermal paste/heatsinking compound? Thank you very much this is very clear. I've had some ideas about the input/output wiring, so I needed confirmation. My personal take regarding inaudible changes is if you need to focus hard to detect changes then it probably wouldn't matter. But I don't know whether there is something happening electrically that could affect the unit in the long run, I doubt so. Just last night some of my friends were having a group chat on our phones and they were discussing about resistor rolling. One guy showed tantalum resistors that cost around €5-7 a pop. He wants to upgrade his Cambridge Audio phono pre. I think that was a little mad, resistors don't change the sound. do they? But then again, I do see a lot of people using the same Dale resistors for the Dynahi.

Having both SE and balanced input+output is good for versatility. A lot of headphones has non removable cables to get replacement XLR cables. For my case, my Matrix Mini-i DAC has balanced output but my turntable and CDP only has SE so I'll need that capability too. For inputs I think it'll be okay since I'm planning to get balanced relay switches, but for the output should both LR ground and -ve be terminated to the headphone ground? Or how should it be? Only both channel ground without -ve connection?

Speaking of grounding, should the each ground and -ve input be grounded to their respective boards or it doesn't matter? Since SE has both grounds tied that means both boards will have their -ve and ground tied together.

I used this for a clone power amp I built. The button's LED taps straight into the 220V mains power so you only need to parallel it to the transformer. I have no idea what circuitry it has inside the housing. http://www.ebay.com/itm/172247784910 But its probably as safe as it sounds like.

I am planning to build using the most recent board and I've been in contact with Dr. Gilmore and several other users here. Luckily a friend of mine is sending out some PCBs for etching so I can tag along with him. Annoyingly enough, case size needs to be very big to accommodate both amp and PSU, with heatsinks. The cost really starts to hike up from thereon.

Ferraris are fast because they're red. Didn't you guys read the memo? Christ.