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Cypher Labs Theorem 720

Discussion in 'Portable Headphone Amps' started by drsheep, Sep 3, 2013.
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  1. yeti99
    Has anyone used both the hifi-m8 and the theorem 720 dac? Was wondering how they compare to each other and which DAC/AMP to get currently am using the HE-400i and also Fostex TH600.
     
  2. singleended58
    I have listened to M8 at CanJam2015 in Southern CA and do not really like it compared to Theorem 720 I owe which is also well matched with my Hifiman HE-400 (I guess HE-400i is even better).
     
  3. Ultrainferno
    I have had both but kept the Theorem. Both are good but I prefered the sound (and size) of the Theorem over the M8, especially with planars and the HD650.
    But tastes are personal of course.
     
    Have you looked at the Hugo or Alo CDM?
     
  4. Ivabign
    I had the M8 and now have the 720 - damn this thing has some punch to it. Superior to the M8 IMO - but my M8 had the IEM mod, so power isn't equal to the T720. Maybe a regular M8 would have equal punch - but signature is superior on the 720. It sounds better all around. I was worried about the hiss everyone talks about, but it really is less than negligible - you can tell when the amp turns on, but it hardly qualifies as hiss. I have used SE846, UM Pro50, 1964 Ears V8 and V6-Stage - all except the Pro50 are super sensitive, but I can pause the music and the background is pretty black...
     
    Whew - I was a bit worried about it. Mine was bought used so there are some hours on the unit - I imagine it just needed to be burned in a bit. 
     
    The sound is rich and dynamic - detailed and neutral with a hint of warmth... Lots of air.. I haven't found a piece of music it cannot keep up with - and it has such great control over the BA headphones - they are able to turn on a dime. I am simply using it as a DAC/Amp with my iMac....
     
    Brilliant - just brilliant.
     
    midnightwalker and Eugguy like this.
  5. midnightwalker
     
    Add to the wonderful sound sign, CL customer service is top notch. I once sent my 720 to service, David sent me back a new one. Emails were replied within an hour. They are awesome :x
     
  6. Eugguy
    I have to say. I agree. Cypher Labs customer service is the best in the industry. I hope someone important from the company reads and knows this. Great product, great (if not better) service. Impossible to find in this era. I hope David knows I still am VERY grateful for sending me an extra connector when the original one had a bad connection as well as being an honest person and giving me a price match. I very much dislike the arrogant - audiophilic types who belittle people who may not know as much about this hobby. CL is the farthest thing away from this. I'll tell you what though, I'll never buy any equipment from the person who makes "silver dragon" cables...I didn't find him very professional at all.

    And it's also great to hear you are enjoying your 720. I love it to death. I use IEMS quite a bit, so I did experience the hiss somewhat, but only during extra quiet passages. It just sounds sweet, brings out an extra dimension and layering quality to your music. I also love the rotary dial. Very fun to have some tacticality in a world of digital/touch screen equipment.
     
  7. Trogdor


    I got to tell you, the M8 is one of the most disappointing products I had to review. It was just lifeless compared to the 720. YMMV.
     
  8. Eugguy
    The one thing that did intrigue me about the m8 was the eq adjustments.
     
  9. lukeap69
    I've just ordered my balanced cable for my Oppo PM-3 and Theorem 720 from Surf cables. I hope to hear an improvement in SQ.
     
  10. Ivabign

    Not sure if it is a positive or negative, but the EQ controls on the M8 are subtle, very subtle bumps in bass/treble. The one thing I did enjoy was the adjustable OI switch - when I would listen with my Velvet or UM Pro50 a higher impedance did make (again) a very subtle difference. Most people I spoke to about the amp though, left it on >1ohm and forgot about it.
     
  11. maricius
    guys http://www.head-fi.org/t/778239/cypher-labs-sustain84-desktop-vacuum-tube-headphone-amplifier
     
  12. rebelme801
    Currently have this setup:
     
    Ipod touch 5th gen --> 720 DAC --> Ibasso PB2 --> balanced cable --> HD650.  The sound quality is nothing short of amazing.  Anyone who complains about the hd650 "veil" should try this.  
     
  13. zniper2984
    I just found out now that i won cypherlabs contest last year for the custom theorem 720.it seems davids email went to my spam folder that i overlook it.:sob:
     
  14. singleended58

    Got this set up except my source is 5.5G mod by Vinni Rossi and no HD-650. However, CL720 and ALO RxMK3B have excellent SQ if go with balanced HP.
     
  15. nephilim32

    Omg I am crying for you. This is the saddest thing I've ever heard on head fi. :disappointed:
    Sorry that happened. The Cypher is just amazing and I am currently saving up for it to upgrade my FIIO E17.
     
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