Here are the specs: Type Pd mx/W Vdg mx/V Vdss mx/V Idss mn/mA Igss mx/nA 2N5486 0.31 25.00 25.00 8.00 1.00 2N5459 0.31 25.00 15.00 4.00 - 2N5457 0.31 25.00 15.00 1.00 can i use these 2 for Q1 and Q2? As in Q2 = 2N5486 Q1 = 2N5459 I couldnt get 2N5484 here...

Has anyone include a bass boost in their amp? I dont mean the PPA, but just merely try and include a resistor, caps and also a switch? I'm building an amp with a bass boost but apparently i dont hear any difference in sound by switching on and off by the switch. Here's how i set it up...

Hello Guys, For the Erix 47 V2.0 amp, Erix uses bypass caps. I just want to know what are the function for the bypass caps? Thanks.

Hi everyone. I would like to build a 12-stepped attenuator as my volume control. But i'm having some problems getting the right values for the resistors. I'm using the 1% resistors, and i want my attenuator to be 25K. Can anyone out there help me with the right values?? I want the...

Hello guys, its been a while. Just wanna know which of these 2 buffers do you prefer for the Meta42? I know the buf634 wont fit into the meta42, but who knows someone did mod the buf and put it nicely into the board. The reason why i ask is because the current output of the 2 buffers...

Hello guys, just wanna know if there is any difference in using the normal blue 0.25W Metal Film resistors and the black 0.25W Precision Metal Film resistors for building the Meta42? Any differences in the sounding output? Which type of resistor is preferred? (althought the favourite...

Well, i bought Senn Pads for my SR-80. Just like almost everyone here, the color yellow is not my favourite, and it doesnt look that cool on my SR-80. So i decided to dye it black. And the result looks like the pads come in the original color black. Just love it.

I've gone thru some of the threads regarding soldering the small tiny AD8620 on the browndog adaptor. But it would be good if there is a close-up pics. Anyone??

I'm not sure if this thread has been posted before. But i was wondering if anyone knows or has the design or schematics for the HeadRoom Airhead Amp? I've tried looking thru the search but cant find any. Anyone? Thanks.

Hi... does anyone whos the full specification for the BP-2EX batteries? Does anyone knows how many mAh does it carry? Thanks in advance.

I'm confused over the Alps pots. A lot of people told me that the Alps (blue velvet) is actually a carbon pot. But when i browse thru eBay today, i saw this http://cgi.ebay.com/ws/eBayISAPI.dll...&category=3284 Can anyone tell me what kind of pot is the Alps? Thanks.

Hi. I have a question. Apparently the 100K Blue Velvet is out of stock, but there are some 250K pots. Can i use it for the Meta amp? Is 250K too high the value? Please dun tell me to get it somewhere else, i just want to know if 250K value is too high or its fine to use it. Thanks.

Ok, just to do some intro again, i'm in the process of gathering enough infos in building myself the Meta amp. Previously i built myself a cmoy but didnt like the output of it. Then i went on to build the Erix 47 V.2, and i got a buzzing problem that wouldnt stop, and i cant figure out the...

Hello everyone, would like to know what are the other alternatives to the Tangent proposed 2N5484 for the Q1/Q2 in Meta42. Thanks.

Hello everyone. I would like to know your feedbacks on the soundstage of all the amps mentioned above. For me, i think the cmoy soundstage is very small. It seems that everything is concentrated in the center of my head while listening, but that is just my built amp and gears. I have not...

Hello Gradoers, i have a question. I've been to the Grado Mods site in Headwize, But i just wanted to confirm this before i go out and buy them. Or maybe some of ya could post some pics of the headphone with the comfy pads?? No i wont get other pads, but only grado pads. Thanks..

Tangent, Morsel.... What software did u guys used to draw the Meta pcb layout from the Tangent's site? Thanks.

Will there be anyone out there who is willing to sell me some Meta42 board using BillPoint? My country doesnt support PayPal.

Ok. I think i've post a few questions before regarding this same problem. Well, i cant seem to solve it myself. So i need some advise here, really need em. I'm using a wallwart this time, 18V to be exact. The A47 built is based on the erix47 V2.0. Power buffer virtual ground used is the...

Can i just connect straight to the power rail using a wallwart? Or do i need some circuitry to change the power. Need advise. THanks

I've just finished building the erix 47 v2.0 amp. I havent put it in a box yet coz its still a prototype, meaning i'm still looking for the best caps in sounding. But i do realise there is a slight hum when i turn on the switch, or while i pause the D-25S. Is there something wrong with the...

Has anyone tried the LM6172 on their cmoy, CHA or maybe META?? Some guy here told me that it actually beats the OPA2134. Feedback guys??

After building the basic cmoy amp(without feedback loop), i found out the while using my SR-80, the sound from the amp wasnt that impressive, althought it sounded much better than just listening direct from the headphone out of the source (D-EJ955). But the headphone out from my D-25S certainly...

Has anyone tried using Black Gate caps instead of Solen in their RA-1 clone??

Has anyone ever used 5% or 2W resistors to build their cmoy, CAH47 or RA-1 Clone?? Can i used 5% resistors to build any of these amp portablely using 9V batts or AA batts?? Need profesional advise here..