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  1. bluemonkeyflyer

    Kameleon v2 Amp and FR Correction Filter Modules

    Soldering is required. You can learn by watching YouTube videos and practicing using cheap components from radio shack. You'll need a source and DAC to use with the amp described in this thread.
  2. bluemonkeyflyer

    EHHA Rev A - Interest Thread

    PM your email and I'll send you the schematics.
  3. bluemonkeyflyer

    Neurochrome HP-1: Ultra-High End Headphone Amp

    I used a Weller WES51 set @ 700 F, Kester liquid flux pen, Kester eutectic solder, and a 1/8" screwdriver tip. No problem. Good luck!
  4. bluemonkeyflyer

    Monoprice Monolith M1060 and M560 Planar Headphones

    Here's another way: http://www.head-fi.org/t/618659/fostex-t50rp-incremental-mods-and-measurements I also have a calibrated Dayton EMM-6 mic mounted in a cardboard box that serves as a dummy head. The box is 10"x8"x5". The headphone sits on top of the box and you measure one side at a time...
  5. bluemonkeyflyer

    The Deals DISCUSSION Thread (READ THE FIRST POST!!!)

    I own 215, 315, 425, 535, and 846. 535 is a bit better than 425. Each iteration is an improvement. I love the Shure house sound. Wonderful mids, clean detailed bass with no bass bleed into the mids, and very good treble retrieval without a hint of sibilance. 846 is far better than 535, more so...
  6. bluemonkeyflyer

    Orthodynamic Roundup

    Yes, but not as crazy as a couple of years ago.
  7. bluemonkeyflyer

    Neurochrome HP-1: Ultra-High End Headphone Amp

    Tom,    Thanks. I'll sign up for your newsletter. I would actually welcome more frequent newsletters or a blog about your designs, general technical information, and "how to's." 
  8. bluemonkeyflyer

    Neurochrome HP-1: Ultra-High End Headphone Amp

    My bad. I blame chronic insomnia.     Correction: I'm loving Neurochrome HP-1...sorry, Tom!
  9. bluemonkeyflyer

    Fostex T50RP Incremental Mods and Measurements

    I can't tell which one is detached. Is it the top driver, red wire? In any case, if the solder pad is not torn off it's an easy fix if you know how to solder. Apply liquid flux to the solder pad and the detached wire. Place the wire on top of the pad and hold it down with a plastic spudge or...
  10. bluemonkeyflyer

    Fostex T50RP Incremental Mods and Measurements

    post a close up picture. If it's ripped off, a repair will be difficult. I've replaced several for guys who did the same thing. I have one driver diaphragm left.
  11. bluemonkeyflyer

    Kameleon v2 Amp and FR Correction Filter Modules

    Mo,   I don't know exactly the total cost because I ordered a lot of extra parts from mouser and digi-key for other projects. The PCBs for the power supply, amp, and filter modules is ~ $45 shipped. As a rough guess, I'd say to build the amp as I did cost me ~$150.00 which is cheap compared to...
  12. bluemonkeyflyer

    Kameleon v2 Amp and FR Correction Filter Modules

    Hi micmacmo,   It's good to hear from you!    I have not tried Kameleon v2 with low cost headphones. So far, I've only made filters for HD650, DT990 Pro 250 ohm, and the "no filter" straight gain module. HD650 and DT990 now sound very much the same...Flat...I like flat. So, I conclude you...
  13. bluemonkeyflyer

    Kameleon v2 Amp and FR Correction Filter Modules

    I finished my Kameleon v2 Desktop Amp and Power Supply. I also built the "No Filter" Gain Module and the Sennhesier HD-650 Filter Module. The sound quality with the HD-650 filter is better than stock: deeper sub-bass, flattens the slight mid-bass hump, and delivers more details.   I'm going to...
  14. bluemonkeyflyer

    Kameleon v2 Amp and FR Correction Filter Modules

    I have the amp, gain board, and power supply almost finished. To avoid EMI, I installed the amp and power supply in separate Hammond enclosures per Frans' excellent and detailed build guide. I used digital calipers, multiple drill bits, and a step drill bit for making precise round holes that...
  15. bluemonkeyflyer

    Neurochrome HP-1: Ultra-High End Headphone Amp

    The QRV-08 is very challenging. It has 300 SMD components and somewhere around 900 solder joints. It's sometimes difficult to determine the part labels printed on the PCB requiring a careful study of the schematic and circuit traces layout. The SMDs are mostly 0805 caps/resistors (2.0 x 1.25mm)...
  16. bluemonkeyflyer

    Neurochrome HP-1: Ultra-High End Headphone Amp

    @Armaegis,   I don't think I can add anything substantive to your excellent review and description of HP-1. I liked HP-1 a lot during my brief audition. It's very clean with balanced FR, good punch, smooth mids, good treble extension/air/details, and wide soundstage.   I compared HP-1 to...
  17. bluemonkeyflyer

    P-A Sjöström headphone amps, any comment?

    Just completed and tested...sounds great!           Here are my first two:      
  18. bluemonkeyflyer

    Kameleon v2 Amp and FR Correction Filter Modules

    'solderdude' has designed numerous DIY amps, power supplies, and much more...all free to the DIY community. He's also the designer of garage1217 tube amps and power supplies. He runs a very informative site HERE with tons of DIY information, guides, tutorials, and a blog about amps and...
  19. bluemonkeyflyer

    Fostex T50RP Incremental Mods and Measurements

    OK. I have what you need. PM me.
  20. bluemonkeyflyer

    Neurochrome HP-1: Ultra-High End Headphone Amp

    I ordered the Neurochrome PCB, yesterday. After reading your excellent review, I'm glad I did. Well done and very detailed review! Many thanks. ~ BMF
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