mavwong

Very under utilize Matrix Mstage clone headphone amp with moded cap. Looking for only $80 Selfcollect whatsapp via 9299 eight nine six one.

Selling above stack in mint condition (only lettler mark fade due to rubber band mark). Come with charger only. Will throw in 2 balance connect jack without wire so you can build your own balance IC between them (best way). I do have Toxic cable balance IC to sell seperately if interested. The RX3B has the usual channel unbalance at low level, turn up to ard 10 will go away. whatsapp me at 9299 eight nine six one to discuss. Asking $988.

No more soon, it's HERE! Just lay my hands on it and it's a butt kicking cans. Now need to let it burn, burn babby burn Mav

Hmm.... looks like time to get a proper amp Of course not getting Zana lah, too ex for me liao. Hope to audit the T1 as well, and hope there's a can slam this year. Mav

I tried, but he opt to keep silence, and this is the second time. I won't try my luck again if i were u. Mav

I find the HD800 lack of dynamic amp from the same setup compare to my old HD600. Is it true HD800 is that difficult to drive? HD800 is overall better stage and mid is airier though. I wonder if T1 is better for me. But wait, no T1 in Singapore yet Mav

I won't suggest his service. You might better off go official repair shop. When I send my bad modded philips sacd player (just a burn transformer) for him to mod, come back still with a lot of trouble (first time back is bad sound, second time won't power up, and third skip CD). Most jialat is he took away my previous mod component without informing me. I end up spending ~800 of upgrades parts in a dead SACD player. Choice is yours. Mav

One positive vote from me. been to Stereo PS first 2 times, try at least 4 headphones and 4 amps, bought nothing yet the service still great! Later I bought APS v3, senn connector and the mav D1 from them, no q ask. When I try the D1, I also loan their NEW HD600 to try out as I didn't bring mine with me when I visit them. End up I bought the D1 which I didn't plan to bought initially. Will sure pay them a visit next time I need anything. Mav

Yes, HD600 open back type phone do have very good potential for seperation and stage. I own HD600 and I'm very happy with the above strong point. For indoor use it's fine, don't think it will suit outdoor use, especially pairing it up with portable amp. Mav

I can understand why I currently using JW WE396A, previously using Windmill getter Raytheon. Raytheon to me is smooth, airy high, but lack weight in mid/mid bass and bass extension. (take note I have a heavily mod D1, with LM4562 in both stage and tube out is feed to the hp amp of d1, driving apsv3 cabled HD600) WE 396a, has better weight in all spectrum plus better headstage and separation. Only thing I am not happy is it doesn't sound as airy/high extension (may be this is what pp refer to has dark), but I still breaking in the WE. To me, the winner is sure WE. My fully moded D1. Sound totally diff comp to stock. Achieving what I want: balance btw dynamic and smooth sounding, airy high, weighty mid,midbass and very reasonable bass extension, fantastic separation and sound stage.

alright guys and girls. After rolling in opamp LT1364 and LM4562, I found that my right channel gone. So I do a little check up and found a broken wire. I can't find any of these info here, thus I'm on my own with a set of cheapo multimeter trying to figure out what's all the wiring in the D1. First let's see the internal. Few things interest me here. But first I would like to stress that some of these info are not verified and any mod you try using the above info will be at your own risk, I will not be held of any responsibility if you damage ur D1 Also bear in mind that soldering work will void your D1 warranty. 1) As you can see from the internal shot, a very thin (looks cheap) set of wire was use for DAC output to the vol pot/input sel before going anywhere else. One of my wire break of from the connector after rolling opamps, it sure does easily break off. What I did for temp measure, is use "analog in (to tube)" yellow color wire to replace it. And I immediately notice improvement in the SQ, more separation, dynamic and airiness in the highs. (try with LF353 in the DAC, LM4562 in the hp amp). If you don't use the SS or tube out, you can try this. On the other hand, if you use only the tube out (as Tube DAC output to external preamp), just unplug the yellow hp out wire jack(lower left) and plug directly to DAC out and you get similar by pass effect but better signal path (I haven't verify this) 2) Having found that the DAC out wire is not as good as the yellow one, may be Ryan should try to replace that with yellow color wire. I personally plan to get some mundrof wire to replace this. Also you can replace the stock wiring from the hp amp out to hp jack with better cable. 3) I was still wondering why D1 design do not feed tube out to the internal hp amp for better SQ? I try Windmill-Getter Raytheon output to pico amp, it sound so open and mid is lush even before proper break in of the tube. I was wondering could I solder some wire and feed the signal from the tube out jack and plug into the hp amp in jack (jack is the same as PC fan jack, should be easy to find)? 4) Back to Opamp rolling. These are just my observation. The 2 stock LF353 doesn't sound similar to my ear for sure. Initially I only roll the HP amp 353 to LM4562. AB the 2 LF353 in the DAC, one sound more dynamic and the other sound veil. I like the more dynamic one, which compliment well with layback/dark sound of LM4562. Later I roll out the DAC 353 with LT1364, and found out LT has better separation, more mid bass, more define bass. But it not as airy as 353. Likely due to LT haven't break in. The LT1364 sure is hot, I can't place my finger in it for more than a second. 5) last, wish to seek advice from some expert here, I plan to mod the caps to mundrof as well. Care to share some suggestion of what to replace other than the hp output caps at C61/C62?

APS v3 is cable upgrade for the HD600/650. treble didn't roll off, just more refine and smooth. But still not as musical/airy as I like it to be, thus the idea of rolling opamps. Default opamps use LF353N, many pp at head fi suggest try LT1364 in the DAC and LM4562 in the headamp section. I would say, grap your headphone and go stereo to audit the Mav D1 see if you like it.

Whether mid are forward depends on ur headphone as well. With my hd600 with aps v3, it doesn't sound too forward. Initially, highs will sound harsh and bright, need more time to tame it down (at least 100hr). For myself, I plan to roll opamps. Still waiting for it to arrive.

Just got the current last piece of Mav DAC D1, same name as my nick I use which I like it a lot At first I really don't even expect I would considering or even bought this amp. Dam I was soooooo WRONG! Thx Aron for slaping me up It sound so much better than my portable rig or even some of the amp I audit at some other shops. Just to recap, my setup is very simple, PC foolbar with asioforall V2, with itune skin -> USB D1 -> D1 build in amp -> APS V3 HD600 deform. The sound sig is all round, more emphasis on mid bass to bass, solid bass sig, slam and dynamic, pretty deep too (can feel the hd600 vibrate when listen to chai ching - Du kuo, bass head sure love this), currently a bit mud. High didn't roll off as I heard (what veil???), vocal are thick, but I think it can be better cos not airy enough (cross finger till it break in) may be it is due to the bit layback sig(vocal part) my system which I also like. Sound stage is sure better. Seperation improvement not much though. I suspect if you listen to xrcd will be best, cos typical xrcd high are bit harsh. tried chai ching ming ge xrcd. Next step is sure mod mod mod.... opamp, tube stage, caps resistor etc... And very temped to get HD800 too, suspect it could be a great match of you don't like the bass too much. ps: check out http://dl.dropbox.com/u/464376/head-fi/mav...ver/driver.html for a lot better driver compare to default driver (smoother sounding especially in the high). It will works with asioforall v2 as well, just enable hardware buffer.