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About 1bit

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  • Headphones
    Sennheiser HD590, AKG K26P, Cresyn LMX-e630, Sony MDR-W08, Koss UR-30
  • Headphone amplifiers
  • Sources
    Panasonic SL-SX400, Sony MZ-R900, Sony MZ-R700, Sony MZ-R50

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  1. sharing my soldering experience with you if you're trying to solder the pins to wires, it's easier to put small amount of solder on both the pin and wire. later you just need to bring them close together, heat both wire and pin with your soldering iron and let the solder flow, remove soldering iron, and hold the wire in place for a while until the solder harden hope it helps practice makes perfect
  2. 1bit

    FLAC conversion

    i believe the advantage of ripping the whole album in 1 flac file is for archiving purposes. together with the cue file, it'll retain the structure of the cd so you can burn copies of the cd.
  3. the most common use of headphone? is this an April fools joke? why, to listen to music of course unless you want to consider the following usage: 1. head accessory 2. ear warmer/muffler substitute
  4. the thing about TL072 is that it has a rather high DC offset, more than 5mV. Yes it's still considered quite small, and perhaps still tolerable by your headphones. opa2227 on the other hand has a very good DC performance, it is a precision opamp after all. TL072 is a generic dual FET input opamp. iirc TL072 has a better slew rate performance max output current is about the same iirc about 20 mA Probably another difference is in terms of noise and THD, and personally (and biased) it's kinda icky using TL072 an old opamp in a design lol
  5. while it is possible to find datasheet online and ask people in the forum, another solution for answering the questions about the potentiometer pin is to test it out yourself using an ohmmeter. i know it's probably quite a hassle for a beginner to even considering buying a multimeter, then there's also that learning curve for using measuring equipment. but trust me, a multimeter is really a great help for diy. and it makes diy-ing much more fun, not mentioning more scientific as then you are able to measure electrical parameters in your amp and see for yourself the improvement that different components or circuit topology brings to your amp or any other circuit in general. oops sorry a bit out of topics. anyway good luck with your diy. i hope it is successful and you have fun with it.
  6. wow awesome review i hope someday i can do that kind of comparisons too wow
  7. really? wow $35 to $160 that's a huge jump but i think a good switch makes all the difference with good switch the tactile feedback feels really smooth but it's still too expensive for me probably it's time to try potentiometer ic with rotary encoder combo plus a little microcontroller and a nice lcd/oled display that'll be cool
  8. Hi variablefeedback I'm interested in getting only the aikido pcb. The step attenuator is a bit expensive to me. Is it okay to buy only the aikido pcb?
  9. Happy New Year to all SGHeadphone forumers!
  10. yeah you really need the led resistor, if you don't put it in, the led will draw so much current that the battery won't last long. the resistor there will control the current. For 9v battery, the resistor's value can range from 560 to 10k ohm, depends on how bright you want the led to be. Try to use as high value as possible though. a little comment: you should probably add more detail on how to solder those jumper wires (the green links in your diagrams) i think beginners might get confused about this. Actual photos would be nice. another thing, metal film resistors (usually blue colored) would be more suitable for an amp. it's still quite cheap at 10 cents a piece iirc. i love the way you put pictures to describe the parts list. but looks like the actual audio jacks that you use is different from the picture. and the main point is that you give a nice layout that is easy to solder the jumper wires (no messy wire crossings) cool
  11. @SleeperAwake are you going to watch Dream Theater next Thursday?
  12. i think in general they refer to the same thing in this discussion thread we use optical to refer to the optical cable, i mean the whole assembly of the cable. fiber optics usually refer to the component inside the cable that is the medium that transfer laser beams. and fiber optics is also used to refer to a type of connection in computer networking (correct me if i'm wrong) the correct way to call this cable is TOSLINK cable
  13. wow so it is possible to tap into ipod's digital content directly. so long drm
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