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  • Cypher Labs Theorem 720 DAC Headphone Amplifier (Black)
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Cypher Labs Theorem 720 DAC Headphone Amplifier (Black)


Price: $799.00 & FREE Shipping
Only 6 left in stock.
Ships from and sold by RECORDING STORE.
  • Fully balanced headphone amplifier
  • Large capacity battery charges Apple devices while playing up to 18 hours, even longer from computers
  • Multiple accessory cables for a wide variety of Apple and other devices
9 new from $799.00

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$799.00 & FREE Shipping Only 6 left in stock. Ships from and sold by RECORDING STORE.


Product Details

  • Product Dimensions: 4.7 x 2.5 x 1.1 inches ; 10.6 ounces
  • Shipping Weight: 1.5 pounds (View shipping rates and policies)
  • ASIN: B00EYYVVYW
  • Item model number: CYP-1388
  • Batteries 1 Lithium ion batteries required.
  • Average Customer Review: 4.9 out of 5 stars  See all reviews (7 customer reviews)
  • Amazon Best Sellers Rank: #146,398 in Electronics (See Top 100 in Electronics)
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: November 14, 2013

Product Description

Details • High quality battery powered headphone amplifier • Works with all modern Apple devices made after 2007 (note: the older iPod Classic 5.5 does not support USB Audio) • Auto-source detect from computers, Android devices and Apple devices • USB audio resolution up to 16/48 from Apple devices • USB audio resolution on Mac (natively) or PC (with included driver) up to 24/192 • USB audio resolution on Android devices (using USB Audio Recorder Pro app) up to 24/192 • Larger capacity battery delivers long play time, up to 18 hours while charging Apple devices • Fully balanced headphone output (4 pin) • Single ended headphone output • Single ended analog line-level output (2.1vrms) • USB mini-A input allows input from computers (USB A to USB mini-B) or Apple devices (use our 30 pin to USB mini-a cable) • High capacity lithium-polymer battery - 8700mAh - isolated AC switching • Three volume gain settings for all headphone types • Free PC driver enables 24/192 playback on computers (no driver required for Mac) Confirm with the manufacturer that your Android device supports USB audio. Android Device List with USB Audio - https://docs.google.com/file/d/0B3XYy1FuzDUecWx6Vmt0NlhUM1U/edit?pli=1 Many Android devices will work with USB DAC's when paired with: USB Audio Player Pro - https://play.google.com/store/apps/details?id=com.extreamsd.usbaudioplayerpro USB Audio Player Pro List of Compatible Devices - http://www.extreamsd.com/USBAudioRecorderPRO/ Specifications The headphone outs have as close to 0 ohm impedance as possible (less than 1ohm). The headphone output levels themselves depend upon the gain settings. With the volume pot set to 100%: High Gain • Single Ended output = 11.3 dB • Balanced Output = 5.5 dB Mid Gain • Single Ended Output = 3.5 dB • Balanced Output = -2.3 dB Low Gain • Single Ended Output = -9 dB • Balanced Output = -14.8 dB

Customer Questions & Answers

Customer Reviews

4.9 out of 5 stars
5 star
86%
4 star
14%
3 star
0%
2 star
0%
1 star
0%
See all 7 customer reviews
300 ohm and lower, all good.
Willie Sanford
And it has the power to drive even my most demanding headphones.
Maecenas
Line out is very good too, it's a real line out.
Jordan Harrington

Most Helpful Customer Reviews

Prior to purchasing this, I had owned a number of different portable headphone amplifiers, including, Total Airhead, Total Bithead, iBasso T3, iBasso P4, JDS Labs C421, and a few others. I even put together a portable rig using a Red Wine iMod, Amp, and special Alo Dock with super nice caps. Even after all that work, you're still utilizing the iPod DAC.

Hence, these new generation of portable DAC/Amps are really a blessing. They might feel slightly bigger than what you're used to but you have to remember that they have both the DAC and AMP in them. Cypher Labs is known for the great DAC (e.g. Algorithm) and this continues it's superiority for portable DACs.

I used this with both my HD800s, K1000s, and a bunch of other headphones. Granted, it was the optimal setup for some of those cans, but it did provide sufficient power. The gain switch is nice, but I generally kept it on low.

It is a little awkward that the USB input is on the same side as the headphone jack as the first time, I put it in the Line Out jack.

Overall, this is great, and I feel that the price is pretty justified. Just wish it came with a 4-pin to Mini XLR adapter cable.
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7 of 8 people found the following review helpful By Willie Sanford on April 24, 2014
Pros

1. Sound quality-Detailed. Detailed. Detailed. Yet never harsh and REAL dynamic range--not too explosive nor tmid--won't balk at complex impactful passages. Turns an itunes file from iPod/ipad/PC/MAC into refined high fidelity!

2. Battery life 10hrs

3. Max out the potential of many brands of headphones.

4. Insane high quality line out bypasses amp so you use another kind.

5. Recharges Apple product line (It's a slow, slow recharge which is a good thing lest you shorten your idevice's battery lifetime by overcharging.)

6. Nice heavy duty metal construction.

7. Comes with all the adapters and cables you could need. 30 pin or Lightning, no problem.

Con's

1. Weight- Think you'll be jogging with this? Think again. It's an elegant brick 1 inch thick, 2 1/4 inches wide and 4 3/4 long. Measured it myself. Seems to weigh about as much as a 12oz can of beer.

2. 600 ohm headphones start to feel like nymphomaniacs at an erectile dysfunction meeting's group hug. 300 ohm and lower, all good.

3. Price. Zero buyer's remorse for me. Add an idevice or laptop/desktop and say a pair of NAD Viso HP50 phones and life for this Gollum with Golden ears becomes too good for words. I'm no Spring chicken either---I've spent embarrassing amounts for nearly 30 yrs. in the name of high fidelity.

Conclusion:

Whether you're an on the go audiophile or need a brilliant intermediary between headphone and computer-- an audition of the 720 should be mandatory on your list.
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4 of 4 people found the following review helpful By Maecenas on November 16, 2014
I have spent untold thousands on quality audio gear over the years and have been totally happy with only a few components. This Theorem 720 Dac, my Zana Deux tube headphone amp, my Sennheiser HD800 headphones, my Grado RS1i headphones and my Shure SRH1540 closed headphones make up most of the short list. I have a closet full of expensive Grado, Denon, Sennheiser and other headphones plus other portable amps which I rarely use.

I combine the Theorem with an iPod 160GB Classic which is ok since the Theorem bypasses the questionable Apple dac and amp in the iPod and uses only the digital as a source. The Classic works fine for that.

As I get older I value listenability over perfect reproduction of the sound. Often the treble is too hot for me for long listening sessions with some of my headphone and amp combos (think Grado), but this is not a problem with the Theorem with the right headphones. The Theorem is detailed and slightly warm with very pleasant treble. Paired with the Shure 1540s the sound is perfect for me. I can listen for hours with no problem. Even though the HD800s with the Zana Deux amp provide cleaner and more linear output, given the choice at home I often choose the Theorem-Shure combo over the HD800-Zana Deux combo. It's that good. And it has the power to drive even my most demanding headphones. Even the HD800s sound better than expected with the Theorem.

But there is one caveat. If you plan to use the Theorem with iems you may encounter some hiss. It isn't audible with music playing, but if that bothers you it might be best to look elsewhere, especially if you will be using only iems. It's there with my iems and it doesn't bother me, but might not be acceptable to you. I knew about the hiss issue before I bought the Theorem, but I planned to use it mainly with full sized headphones so I'm happy. There is no hiss at all out of even my most sensitive headphones.
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7 of 8 people found the following review helpful By yanjumoye on January 6, 2014
Verified Purchase
This ia simply the best headphone amp I own......I'll pay easily $1000 for these sophisticated yet unassuming amp.....I received a sony pha2 recently but the sound is way too warm and harsh......this on the other hand is sonically near perfect and natural sounding with almost zero distortion. .I'm truly amazed that a portable amp can sound as good as an expensive home amplifier..NO JOKE.....I also ordered the centrance hifi-m8 but the waiting time is 3 months unfortunately.....if money is no impediment. .buy it....it is simply amazing!
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