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Meier Corda Move details released

Jun 21, 2007 at 3:48 AM Post #46 of 1,165
Thanks for the impressions! I really look forward to getting mine....
 
Jun 21, 2007 at 9:46 AM Post #47 of 1,165
an opamp does not a USB DAC/portable amp make

Indeed. And for an amp in a solid metal enclosure (no plastic used for the case at all except for battery compartment lid as far as I can see) it's not a bad price, but if you don't care about that, maybe this isn't for you. The MKIII is excellent - but to me even the case of the Move alone is worth $55 extra.
 
Jun 21, 2007 at 1:36 PM Post #48 of 1,165
If music files are played from laptop, to use DAC you need to use USB. Then is the voltage 5V or can add more power to it?
 
Jun 21, 2007 at 1:51 PM Post #49 of 1,165
Quote:

Originally Posted by senny-ftw /img/forum/go_quote.gif

I'm not a fan of crossfeed but, with the Move, it's growing on me. The crossfeed seems considerably better on this vs the MKIII for some reason.



Could you please say more about what you mean by "better" crossfeed? Did you notice more bass in MOVE than mkIII in crossfeed mode? Jan said like Opera, crossfeed implanted in MOVE also has bass compensation.

Thanks for the initial review. I am really looking forward to mine.

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Jun 21, 2007 at 6:32 PM Post #50 of 1,165
Quote:

Originally Posted by klemchang /img/forum/go_quote.gif
Thanks for the initial review. I am really looking forward to mine.

600smile.gif



I got mine 15 min ago! I can't believe it took only 5 days for delivery to Michigan this time!

Burning it in now. Will post my impression later.

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Jun 22, 2007 at 5:51 PM Post #52 of 1,165
Could you please say more about what you mean by "better" crossfeed? Did you notice more bass in MOVE than mkIII in crossfeed mode? Jan said like Opera, crossfeed implanted in MOVE also has bass compensation.

I find with the MKIII and also Total Bithead a huge reduction in power, impact and clarity when you turn crossfeed on. This is much less noticeable (if at all) on the Move.
 
Jun 22, 2007 at 5:54 PM Post #53 of 1,165
If music files are played from laptop, to use DAC you need to use USB. Then is the voltage 5V or can add more power to it?

You have three options:

1) USB power
2) 9V battery
3) Regulated 6-12V DC regulated power supply (mains)
 
Jun 22, 2007 at 8:21 PM Post #54 of 1,165
Quote:

Originally Posted by senny-ftw /img/forum/go_quote.gif
If music files are played from laptop, to use DAC you need to use USB. Then is the voltage 5V or can add more power to it?

You have three options:

1) USB power
2) 9V battery
3) Regulated 6-12V DC regulated power supply (mains)


Actually four:
1) 9V battery low current mode (4.5V nominal)
2) USB power (5V nominal)
3) 9V battery high current mode (9V nominal)
4) 6-12V DC regulated power supply (mains) (6...12V nominal)

Low current mode should be sufficient for headphones with an impedance of 60 ohms or lower. The amp will always automatically switch to the higher voltage power source. Note that this means that if the dac is connected and the amp is set on high current mode with a battery installed, the amp will not draw usb power but will run off the battery. Likewise when a power supply of less than 9V is connected and a battery is installed the amp will draw power from the battery. The amp runs automatically in high gain mode when an external power supply is connected. The amp can also be simultaneously run from usb power and amplify an analog sound source. The usb sound signal is automatically bypassed when an analog source is connected.
 
Jun 23, 2007 at 1:07 AM Post #56 of 1,165
Quote:

Originally Posted by koto-in /img/forum/go_quote.gif
Actually four:
1) 9V battery low current mode (4.5V nominal)
2) USB power (5V nominal)
3) 9V battery high current mode (9V nominal)
4) 6-12V DC regulated power supply (mains) (6...12V nominal)

Low current mode should be sufficient for headphones with an impedance of 60 ohms or lower. The amp will always automatically switch to the higher voltage power source. Note that this means that if the dac is connected and the amp is set on high current mode with a battery installed, the amp will not draw usb power but will run off the battery. Likewise when a power supply of less than 9V is connected and a battery is installed the amp will draw power from the battery. The amp runs automatically in high gain mode when an external power supply is connected. The amp can also be simultaneously run from usb power and amplify an analog sound source. The usb sound signal is automatically bypassed when an analog source is connected.


So it would be reasonable to use USB power if available? I wonder if IEMs like shure E500 would take advantage of 9V over 5V nominal current?
 
Jun 23, 2007 at 4:21 AM Post #57 of 1,165
Quote:

Originally Posted by qscq /img/forum/go_quote.gif
I wonder if IEMs like shure E500 would take advantage of 9V over 5V nominal current?


I doubt that you would hear any difference with IEMs between the 5 volt USB power and max. voltage. With my Porta Corda the 5 volt gets ramped up to 10 volts I believe and it has more than enough power for most headphones.

Using the USB power is very convenient.
 
Jun 23, 2007 at 9:00 AM Post #58 of 1,165
Quote:

Originally Posted by GreatDane /img/forum/go_quote.gif
I doubt that you would hear any difference with IEMs between the 5 volt USB power and max. voltage. With my Porta Corda the 5 volt gets ramped up to 10 volts I believe and it has more than enough power for most headphones.

Using the USB power is very convenient.


Low Impedance IEM's like the Shure E500 already have more than enough voltage in low current mode and with USB power. Adding more voltage at this point won't change the quality of the sound.

The USB power handling of the Porta Corda and the Move are identical: +5V, -5V. This should be sufficient for headphones with an impedance of 120 Ohms or less.
 
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