Hopstretch Posted January 26, 2009 Report Posted January 26, 2009 Maybe Beefy knows something about these Aussie blokes? Their new Headamp popped up on HF this morning. It looks quite interesting as a potential match with HD800s. It's powered by their own discrete opamps, which they apparently also sell separately. Has anyone had any experience with rolling these?
Beefy Posted January 26, 2009 Report Posted January 26, 2009 Maybe Beefy knows something about these Aussie blokes? Mention of it popped up on a local forum I frequent, but I don't know of any local listening impressions or anything like that. But from my perspective, the page is just loaded with audiophool bullshit. For starters, anybody who thinks OPAMPs are inherently evil has never heard an MMM or amps of similar calibre. Not to mention some of it is just plain wrong...... 'True to our design methods, the HA-100 is built with a differential input stage. Neutralising our Burson Opamp technology it has no decoupling capacitor on its signal path.' Since when do DEcoupling caps go in the signal path?
n_maher Posted January 26, 2009 Report Posted January 26, 2009 Yet another company that appears to use this when writing marketing fluff.
Dreadhead Posted January 26, 2009 Report Posted January 26, 2009 Yet another company that appears to use this when writing marketing fluff. Awesome
mulveling Posted January 26, 2009 Report Posted January 26, 2009 Yeah, and the BS about the HD650 being "one of the most difficult to drive headphones on the planet"? Since when has high sensitivity (103db/mW), moderately high impedance been hard to drive for a dedicated amp? HP1000, R10, K1000, K340 - all much much harder to drive than the Senns.
Dreadhead Posted January 26, 2009 Report Posted January 26, 2009 Yeah, and the BS about the HD650 being "one of the most difficult to drive headphones on the planet"? Since when has high sensitivity (103db/mW), moderately high impedance been hard to drive for a dedicated amp? HP1000, R10, K1000, K340 - all much much harder to drive than the Senns. Really? Or is that a function of the fact that they are really expensive and people that have them more often than not have mammoth amps? They got quite loud very happily out of my GS-X on low gain, and I believe (this is a foggy memory) I had to turn it up when I switched to the 650s to get a volume match.
Pars Posted January 26, 2009 Report Posted January 26, 2009 There is a Chinese (I think) company which it is said actually makes the Bursons, or the design is copied from them (Audio-gd). They have 3 flavors of the things. A review of them is over in the DIY area of the other site: Audio-gd discrete op-amps reviewed: OPA-Earth, OPA-Moon, OPA-Sun v.2 - Head-Fi: Covering Headphones, Earphones and Portable Audio I personally haven't used them; the only discrete stuff kinda like this that I use is for I/V stages with NO feedback. Opamps by convention must have feedback to work (usually tons of feedback). Plus they use BS meter pegging language in their descriptions, making me much less likely too even consider them. One guy in the DIY section (back before the HF crash) had put some in a CD player and seemed to like them OK. But it didn't seem like a night and day difference. Do a search on Burson there.
laxx Posted January 26, 2009 Report Posted January 26, 2009 Volume != equal to drive. You have to factor in how it controls the sound. Most amps can give you adequate volume or even nose bleed volumes, but not all can take a hold of the bass and keep it tight with slam, keep the high frequencies from sounding shrill, etc..
Hopstretch Posted January 26, 2009 Author Report Posted January 26, 2009 You're all haters. This is the discretest headamp in the world. It banged Paris Hilton in a club toilet last week and hasn't even told its best mates!
Pars Posted January 26, 2009 Report Posted January 26, 2009 You're all haters. This is the discretest headamp in the world. It banged Paris Hilton in a club toilet last week and hasn't even told its best mates! Good choice... I wouldn't either
peanutbutterjam Posted January 26, 2009 Report Posted January 26, 2009 Maybe Beefy knows something about these Aussie blokes? Their new Headamp popped up on HF this morning. It looks quite interesting as a potential match with HD800s. It's powered by their own discrete opamps, which they apparently also sell separately. Has anyone had any experience with rolling these? There is a Chinese (I think) company which it is said actually makes the Bursons, or the design is copied from them (Audio-gd). That discrete opamp is definitely either Audio-gd's or copied exactly. I used them before, and they look EXACTLY the same as that in the pictures, except that the colour of the PCB board on mine was brown.
kevin gilmore Posted January 26, 2009 Report Posted January 26, 2009 dynalo, dynahi, dynafet, B22 and B24 are all fully discrete opamps. I'm sure that with surface mount resistors i could cram a dynalo into that form factor.
Dreadhead Posted January 26, 2009 Report Posted January 26, 2009 Good choice... I wouldn't either I would tell my doctor though
Icarium Posted January 26, 2009 Report Posted January 26, 2009 dynalo, dynahi, dynafet, B22 and B24 are all fully discrete opamps. I'm sure that with surface mount resistors i could cram a dynalo into that form factor. Dynafet.. wantttt
mulveling Posted January 26, 2009 Report Posted January 26, 2009 Really? Or is that a function of the fact that they are really expensive and people that have them more often than not have mammoth amps? They got quite loud very happily out of my GS-X on low gain, and I believe (this is a foggy memory) I had to turn it up when I switched to the 650s to get a volume match. Well, the GS-X is one hell of an amp at driving damn near anything, and like laxx said the position of the volume knob doesn't always tell you how hard the amp is working (no problem in the GS-X's case). The R10 and HP2 both really thrashed the toaster SDS w/ 6SN7 output tubes - readily apparent distortion in the bass, increasing rapidly as you push the volume. For some reason the (also low impedance) L3000 fared better, maybe helped by its high sensitivity. It can be tough for an OTL tube amp to handle low impedance well. The Zana Deux of course does well, also the Supra/SDS with 6BL7/6BX7 output tubes.
Currawong Posted January 27, 2009 Report Posted January 27, 2009 Search for "HDAM" or "Audio-gd HDAM" to see the threads on the other site. The people who have tried them, including myself, have had good results. The Burson HDAM is the Audio-gd Earth. The only downside to them is, they are a hell of a lot bigger than an opamp, so you need to rig up an extension lead to connect them in some cases. There's a lot of mention of them in the Zero DAC thread on the other site (which you can't search for as "zero" is too common a term). There's also a thread where someone tested them against a bunch of opamps, which is interesting. I've put them in the Zero, a LD MKV and in a box being developed by Audio-gd we asked for to replace the Zero after it started blowing up people's headphones and the like. In all cases, the upgrade from OPA627s, LT1364, LM4562 and whatever it was in the MKV that I've forgotten, was significant.
soloz2 Posted January 29, 2009 Report Posted January 29, 2009 From what I've seen I believe the audio.gd versions are ripoffs. I haven't used them though. I have a pair of the Bursons in my CDP and they are quite nice. A bit spendy for what they are, but better than the 627's I had in there previously IMHO.
Filburt Posted January 29, 2009 Report Posted January 29, 2009 Mention of it popped up on a local forum I frequent, but I don't know of any local listening impressions or anything like that. But from my perspective, the page is just loaded with audiophool bullshit. For starters, anybody who thinks OPAMPs are inherently evil has never heard an MMM or amps of similar calibre. Not to mention some of it is just plain wrong...... 'True to our design methods, the HA-100 is built with a differential input stage. Neutralising our Burson Opamp technology it has no decoupling capacitor on its signal path.' Since when do DEcoupling caps go in the signal path? I love the "true to our design methods...differential input stage" LOL. Of course it's a differential input stage, it's an op-amp! Making something discrete doesn't automatically make it better. It takes substantial effort to do better than a good IC, and just dumping something in because it's discrete is asinine.
spritzer Posted February 1, 2009 Report Posted February 1, 2009 Opinion - Experience = Bullsh!t ...and your point is??
Pars Posted February 1, 2009 Report Posted February 1, 2009 I think he means bullshit. Yes, but whose Opinion and Experience is he referring to? Filburt's? I don't think I would go there...
spritzer Posted February 1, 2009 Report Posted February 1, 2009 Yes, but whose Opinion and Experience is he referring to? Filburt's? I don't think I would go there... That's exactly what I think he's referring to.
GPH Posted February 1, 2009 Report Posted February 1, 2009 Opinion - Experience = Bullsh!t Attacking a member with good technical knowledge on something he didn't say = asshat.
hew Posted February 2, 2009 Report Posted February 2, 2009 The statement is a truism that I thought relevant to the tone the thread was taking: a tendency to dismiss an idea without giving it a fair chance when it does not fit in with preconceived notions. I expect to see that sort of approach on the other site but not here.
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