Probably interested in a stereo board set, kits would be good too.

Quote: Originally Posted by the_equalizer <snip> You see, what I'd thought would happen was that the MOSFET source would sit at ~18 volts (the 17EW8 tube heater voltage) and, with R2, R8 = 390 K the MOSFET gate would sit at ~17 volts; so the MOSFET wouldn't turn on. But what's...

Quote: Originally Posted by the_equalizer Oh wow... this little circuit doesn't cease to amaze me.... so it works without changing the gate bias resistors!? I'll have to try it myself this evening! I don't think the tube suffers any damage by running it's heater with a lower voltage...

Yup, shuffle doesn't turn off. My grouse is that even though it's in shuffle, it'll play some random song and then go to song #1-#2-#3. I have tried using the other power-off method, but then it tends to get bumped on in my bag and then run down the battery. I'm only using the internal...

The 17EW8s showed up, so popped them in to the amp. Didn't switch the bias resistor though for lack of time. Initial impressions are that they are a definite improvement over the 12AU7s previously in there , although those were generics just labeled '12AU7 China'. Now those sound at least a...

Quote: Originally Posted by Seidhepriest Second isn't much of a problem, but it can be an annoyance for some. The Rokchip firmware has no file sorting. It just sorts files in the order they were copied. This means that adding track 01 after having copied track 10 first will play track...

Thank you tomb. Your SSMH site was very useful when deciding how to construct it, and the suggested heatsinks were nice big ones that didn't look ugly.. Quote: Originally Posted by the_equalizer Question: if the on/off switch is in the back of the unit, what does that red-tipped...

Finished a 12AU7 version last week in a recycled Hammond case, after missing the old 19J6 version I built and sold enough to give this a second spin. 12AU7s are a lot more widely available, so I won't have to ditch this amp for a fear of lack of tubes again. Had a couple of failed attempts...

Something like this? http://www.headphoneamp.co.kr/ftp/si...ainReducer.jpg

Not sure if this was mentioned before, but perhaps you could modify the output vias to be slightly larger, to accommodate around 22 gauge wire? I've completed my three already, but for at least one had to trim the wires I was using as they were too thick to fit in.

Quote: Originally Posted by TheBigCW Hey there folks. Looking at picking up this little bad boy, as it's very affordable and very attractive. I'm getting a pair of K601s and I don't want to go the pure tube route (i.e. little dot) but I like the hybrids. I've heard some conflicting...

Quote: Originally Posted by Amatsu Thanks for the input. Does it drive your HD650 decently? The Bravo has a lot of gain - I can barely turn the volume pot up to the level where the channels balance when using the y1. Volume-wise, it doesnt have an issue, but (imo) it doesn't...

My Bravo arrived today, even smaller than I had expected. I managed to snag mine at a better than average price, so I can't say I have to many complaints. I'm currently running it off a y1 DAC for source. Sonically I think it's decent, no giant-killer but a pleasant enough sound. From memory...

Just a short update - the second Grub is up and running. I still think the PCM chip was the main problem, but reflowing that, the regulator and a few other iffy joints seems to have cleared it up. Test points would be good, yes. Maybe 5V/GND pads on the side opposite the USB jack could be...

Quote: Originally Posted by cobaltmute Interesting. The 840s are 44Ω. I've got a set of SE210 (26Ω) and a couple generic earbuds (32Ω). I found for these phones that the Carrie+Grub was a little bright and harsh with these, but with my 60Ω Sennheiser HD 440 II, the high end edge...

I've completed one, with another that has a problem somewhere - I suspect it has to do with the PCM2707 soldering as there's no USB detection. The working one is mated with a Carrie, and sounds pretty good except a slightly harsh top-end with the Shure 840s. Design-wise, not much to add...

I'll probably consider this to go with the Carries too, since it eliminates the DAC output caps. Here's to hoping pics will be up soon..

It's using a 3.5mm jack

Nice one; thanks fatman

Looking forward to your impressions ghunter - I'm still undecided whether to order one together with the NE-8s yet.

Quote: Originally Posted by roebeet - Make sure you get the right replacement headphone jack. There are ones for the 30GB Video, and ones for 60GB/80GB Video. I don't know know why, but they are supposedly different. The plastic part that holds the jack against the backplate is...

Quote: Originally Posted by ClieOS Okay. I'll look forward to your impression. You know where to find me, if you'd like to try them out.