Recent content by Axcelon
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Constant sound pressure level device
What would you think of a USB DAC/amp, like a DAC1 USB or better, combined with audio player software that could automatically set the volume of the DAC/amp to a specified SPL (rms, peak, etc.)? Of course, the software would require the user to tell it what headphones were being used, and...- Axcelon
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- Replies: 0
- Forum: Computer Audio
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Amp recommendations for Audeze LCD-2
Quote: Thanks Loevhagen --- that's exactly the type of information I'm looking for!- Axcelon
- Post #5,175
- Forum: Headphone Amps (full-size)
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Meier Audio Quickstep (also Stepdance and 2Stepdance) Discussion and Impressions Thread
The reason I bought the XP8000 was to not spend the time engineering a power supply . . . oh well . . . The reason I'm thinking 9V LiPo is because I already have em, and the charger . . . I don't think over-current protection is necessary in this circuit--or with a willy circuit. ...- Axcelon
- Post #2,075
- Forum: Portable Headphone Amps
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Amp recommendations for Audeze LCD-2
I'm considering the following options for driving the LCD-2.1: Rega DAC --> V200 V800 --> V200 m903 Has anyone been able to compare these three setups? What would be the strengths and weaknesses of each?- Axcelon
- Post #5,151
- Forum: Headphone Amps (full-size)
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ARRIVED: new Rega DAC
Quote: I'm considering buying the Rega/V200 for the LCD-2.1. The other major competing options are V800/V200 and the Grace m903. Have you heard those and been able to make any comparisons?- Axcelon
- Post #404
- Forum: Dedicated Source Components
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Meier Audio Quickstep (also Stepdance and 2Stepdance) Discussion and Impressions Thread
Hey guys, Has anyone had problems with the XP8000? Mine has failed completely. The first time I reached for it after the warranty period it was dead. I'm considering building a battery pack out of 2 LiPo 9V and running that into the willy. Any ideas?- Axcelon
- Post #2,073
- Forum: Portable Headphone Amps
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Meier Audio Quickstep (also Stepdance and 2Stepdance) Discussion and Impressions Thread
That's a very generous offer, but I don't think I have a bad unit. The hiss is not heard through the headphone audio system--rather the WI15 makes an audible hiss while operating that can be heard easily in a quiet room. It's not loud, but it's there. My setup is: Apple Lossless iMod...- Axcelon
- Post #1,649
- Forum: Portable Headphone Amps
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Meier Audio Quickstep (also Stepdance and 2Stepdance) Discussion and Impressions Thread
I now have the original StepDance + XP8000/WI15 setup. I'm running a 5.5 gen iMod into it, and listening with the original (v1) LCD-2. It is a very powerful setup. I listened using the 12V output from the XP8000 first, then with the WI15 when it arrived. I am wondering if anyone...- Axcelon
- Post #1,629
- Forum: Portable Headphone Amps
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Meier Audio Quickstep (also Stepdance and 2Stepdance) Discussion and Impressions Thread
I've had the Stepdance for a while now, and have been listening using the SM3, Denon D2000, and Beyer DT800/600. While they all benefit from the Stepdance over older amps like the Predator or D10, the Denons really shine. Their bass is more liquid, and I think the Stepdance overcomes the...- Axcelon
- Post #970
- Forum: Portable Headphone Amps
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Review: Portable amp roundup! 56 portable amps reviewed and compared - FINAL update 12-20-10 added RSA SR-71B
Cusp, thanks. You know, you told me I didn't know what a buffer is on another thread and you were wrong there too. At least you assumed I was wrong, because I haven't posted here a lot. And daveDerek,obviously ordering an amp implies someone has never heard it--how correct! Unless they...- Axcelon
- Post #2,860
- Forum: Portable Headphone Amps
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Meier Audio Quickstep (also Stepdance and 2Stepdance) Discussion and Impressions Thread
The StepDance definitely pairs well with the Denon D2000. Reggae and Hip-Hop come through with astonishing clarity. I think I've never heard the highs rendered so cleanly and powerfully before. And it manages to render many different instruments with varying frequency ranges while maintaining...- Axcelon
- Post #328
- Forum: Portable Headphone Amps
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Meier Audio Quickstep (also Stepdance and 2Stepdance) Discussion and Impressions Thread
I use the iPower 520 mAh batteries found: iPower PRO 9V Battery Rechargeable Lithium Polymer Battery IP9V520 520mAh For DIY power supplies, these designs are sound (no pun intended). http://www.amb.org/audio/sigma11/ http://www.amb.org/audio/sigma22/ Lorentz, You might try a...- Axcelon
- Post #319
- Forum: Portable Headphone Amps
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Review: Portable amp roundup! 56 portable amps reviewed and compared - FINAL update 12-20-10 added RSA SR-71B
Qusp According to Jan Meier’s website, the “balanced ground” actually uses a specific signal that is generated in response to the L/R input channels—that is different from either one alone—and outputs that to the ground lead while simultaneously outputting the sum of the GND output with L...- Axcelon
- Post #2,855
- Forum: Portable Headphone Amps
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Meier Audio Quickstep (also Stepdance and 2Stepdance) Discussion and Impressions Thread
Lorentz, It sounds like you have a ripple current coming through your power supply. You could try lowering the voltage to just above where the battery takes over and see if that helps. Do you have any DIY experience? It is possible to build a simple regulator/pi-filter circuit that...- Axcelon
- Post #307
- Forum: Portable Headphone Amps
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Meier Audio Quickstep (also Stepdance and 2Stepdance) Discussion and Impressions Thread
Absolutely incredible! I remember the first time I used my old SR80s. I heard things I’d never head before—out of an uninteresting PCDP. Then, when I got my se530s, again—things I’d never heard before were suddenly there. Then the Predator, and the D10. But yesterday and today are...- Axcelon
- Post #306
- Forum: Portable Headphone Amps