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  1. 12-08-2005 01:58 AM #1
    cmy330go
    cmy330go is offline

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    Talking DIY Headphone Amp!!!!

    I Just compleated my first DIY Headphone amp!

    All of it is enclolsed in an Altoids tin. It is powered by a 9v battery and uses a burr-brown op-amp. So far I have only used it with my ipod. WOW what a difference. I have always loved my Ipod but felt it lacked real UMPH! Not the case anymore.

    I ordered enough supplies to build two more and am really looking forward to trying different op-amps and tweaking the circuit.

    Pics to come!

    ~Dave~

    Edit: Photos
    Attached Thumbnails Attached Thumbnails Click image for larger version Name: IMG_1503.JPG‎ Views: 242 Size: 158.5 KB ID: 12800   Click image for larger version Name: IMG_1505.JPG‎ Views: 359 Size: 169.8 KB ID: 12801  
    Last edited by cmy330go; 12-08-2005 at 03:53 AM.
    HT
    Mits WD-65737, DirecTV, Oppo DV-970HD, XBOX 360, Yamaha RX-V2500, Parasound Halo A23, Yamaha CDR-HD1300, Music Hall MMF-2.1, Parasound PPH-100, LSi-15, LSi-C, LSi-FX, LSi-7, PSW-1000, Monster HTS2600

    2 CH
    Sound Quest SQ-88, Sutherland Ph.D, Music Hall MMF-7, Arcam CD72T, B&W 802 S3, Monster HTS2500, VPI 16.5
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  2. 12-08-2005 03:46 AM #2
    Joey_V
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    A classic CMOY amp... nice job!

    I have (err... had - since the guy just paid for it, but I still havent shipped it) a nice headphone setup with a dedicated headphone amp - the Headamp (headamp.com) GS-1 amp....

    Paired with my 650s, they are reeeal good... but I still think that they are both a bit too expensive considering what one can get from the speaker realm of audio. The headphone amp was $750 when I bought it... that can pretty much buy you a used Rotel RB1080!
    Joey's College Gear:
    Current Gear:
    SB3 -> PS Audio DAC III -> Cary Audio SLP-98Phono Tube PreAmp w/ Sylvania NOS 6sn7 tubes -> Plinius SA102 Class A amp -> Martin Logan SUMMIT/Strata Mini -> :D
    Old Gear:
    Martin Logan Vantage (4.75/5)-ML Mosaic (4.25/5)-Onix Ref1 (3.7/5)-Sonus Faber Concerto (3.5/5)-SF Concertino (3/5)-Axiom M22ti (2.75/5)-Polk LSi9 (3.75/5)-LSi7 (3.25/5)-HK AVR330-Rotel RC1070/RB1070/RB1090-SVS 25-31PC+ sub
    RUSH Med School 2008!!:D
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  3. 12-08-2005 03:56 AM #3
    cmy330go
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    Yep....it's a CMOY. I have to admit that it is way better than I expected. I seriously doubted that a mere $30 in parts could render such results.
    HT
    Mits WD-65737, DirecTV, Oppo DV-970HD, XBOX 360, Yamaha RX-V2500, Parasound Halo A23, Yamaha CDR-HD1300, Music Hall MMF-2.1, Parasound PPH-100, LSi-15, LSi-C, LSi-FX, LSi-7, PSW-1000, Monster HTS2600

    2 CH
    Sound Quest SQ-88, Sutherland Ph.D, Music Hall MMF-7, Arcam CD72T, B&W 802 S3, Monster HTS2500, VPI 16.5
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  4. 12-08-2005 09:04 AM #4
    steveinaz
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    VERY cool man.

    Source: C.E.C. CD-3300 CD Transport
    DAC: Benchmark DAC/PRE
    Linestage: Placette Audio Passive
    Power Amp: Parasound HCA-1500A
    Speakers: Harbeth Compact 7ES-3 Monitor

    Stop dissecting and start listening. - Steve in Arizona
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  5. 12-08-2005 01:54 PM #5
    cmy330go
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    Thanks guys!

    I would recommend this project to anyone with the ability.
    HT
    Mits WD-65737, DirecTV, Oppo DV-970HD, XBOX 360, Yamaha RX-V2500, Parasound Halo A23, Yamaha CDR-HD1300, Music Hall MMF-2.1, Parasound PPH-100, LSi-15, LSi-C, LSi-FX, LSi-7, PSW-1000, Monster HTS2600

    2 CH
    Sound Quest SQ-88, Sutherland Ph.D, Music Hall MMF-7, Arcam CD72T, B&W 802 S3, Monster HTS2500, VPI 16.5
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  6. 12-08-2005 02:33 PM #6
    faster100
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    instructions and parts list would be cool
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
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  7. 12-08-2005 02:43 PM #7
    audiobliss
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    ^^ Sure would be. That looks awesome! Great job!

    What exactly is an 'op-amp'?
    Quote Originally Posted by George Grand View Post
    Quote Originally Posted by Jstas View Post
    Simple question. If you had a cool million bucks, what would you do with it?
    Wonder WTF happened to the rest of my money.
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    Equipment Pictures

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  8. 12-08-2005 04:11 PM #8
    Jstas
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    For those that aren't psychic.

    To build one of your own...
    http://tangentsoft.net/audio/cmoy-tutorial/

    To buy one already built...
    http://www.evilfire.com/
    You're just jealous 'cause the voices don't talk to you!
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  9. 12-08-2005 07:00 PM #9
    Ricardo
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    Quote Originally Posted by audiobliss
    ^^ Sure would be. That looks awesome! Great job!

    What exactly is an 'op-amp'?
    Op-Amp

    http://en.wikipedia.org/wiki/Operational_amplifier
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  10. 12-08-2005 09:24 PM #10
    Shizelbs
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    Nice cmoy.

    Yeah, that tangent link is a good one. I almost undertook the project myself. If nothing else its a cheap way to learn to solder.

    The cmoy is nice because you can travel with it and you don't have to plug it in. Nice work.
    www.shelbybottemiller.com
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  11. 12-08-2005 10:08 PM #11
    Dennis Gardner
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    I had a bad case of altoids once, the itching was unbearable. ;)


    Oh yeah......nice amp Dave!
    Last edited by Dennis Gardner; 12-08-2005 at 10:12 PM.
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  12. 12-08-2005 10:44 PM #12
    cmy330go
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    Quote Originally Posted by Dennis Gardner
    I had a bad case of altoids once, the itching was unbearable. ;)


    Oh yeah......nice amp Dave!
    Thanks!

    Sorry to hear about your 'toids. ;)
    HT
    Mits WD-65737, DirecTV, Oppo DV-970HD, XBOX 360, Yamaha RX-V2500, Parasound Halo A23, Yamaha CDR-HD1300, Music Hall MMF-2.1, Parasound PPH-100, LSi-15, LSi-C, LSi-FX, LSi-7, PSW-1000, Monster HTS2600

    2 CH
    Sound Quest SQ-88, Sutherland Ph.D, Music Hall MMF-7, Arcam CD72T, B&W 802 S3, Monster HTS2500, VPI 16.5
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