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Focusrite VRM Box

post #1 of 7
Thread Starter 

This looks like an interesting gadget, I wonder if it's any different from the VRM section of the Saffire Pro 24 DSP.



post #2 of 7

Indeed an interesting gadget.  My concerns are many though.  


1.  There is not a speaker being emulated that I would own or take seriously, they are all run of the mill low quality monitors

2.  We have no idea of the quality of the dac

3.   If the emulation can be defeated we have no way of knowing how good the hp amp is by itself is.


I think a better solution would be just to have a DSP that allows for custom eq of a standard great quality hp out.  Kind of like what KRK are doing with the Ergo and speakers.


But I am sure some wanna be mix- meisters would go for the VRM, headfi and audiophiles......not so much


WAIT a minute..................... $99 - all bets are off............................I'll keep moving

post #3 of 7
Originally Posted by bixby View Post

Indeed an interesting gadget.  My concerns are many though.  


1.  There is not a speaker being emulated that I would own or take seriously, they are all run of the mill low quality monitors


At least they offer an old Standard Studio Monitor, the Rogers LS3/5A. To get "real" good monitor simulation, you probably have to buy the Smyth Realiser A8, which gives you a personalized room/monitor simulation. But at a price!!

post #4 of 7

I've been using this as a temporary replacement amp with my HD800s and its pretty darn good.  My old Earmax has reached the end of the road and is falling apart (its had a hard life), and the Focusrite bests it in most respects, although that may be because the Earmax isn't performing properly.  The Earmax is ever-so-slightly smoother, but that's about it.


I can't compare the Focusrite to a functioning higher spec amp yet as I'm waiting for some loan units to arrive, but it has slam, pace and rhythm.  It can get a little fatiguing over the long haul, but I can't really fault it at the price.


It has a single spdif input, which to my ears sounds better than usb only.  It requires a PC to be switched on to work however so I can't power it from an ipod mains adaptor (which uses a usb cable).  It also has an issue when using a 170i dock on the spdif input (with power taken from the PC) as it auto-mutes between songs, and occasionally at other times, causing every song to fade in slowly, as well as odd times in mid song.  Initially I thought it was having difficulty driving the HD800s, but it has no such problems from the PC input (even using spdif) and it can go louder than I dare use it.  Whether the muting issue is caused by amp or dock I can't say, although the dock drives my other dacs fine.


The software is vaguely amusing, but unnecessary from a headphone amp perspective.  The box works just fine using the default drivers and they installed automatically when I plugged the usb cable into my Win7 64 machine.  The VRM software is like a crude graphic equaliser with a bunch or presets*, and I can see it being very useful for mixing, but every speaker option mutilates the sound and the treble in particular.  It's worth a laugh, but it's not worth extended listening.  If they could use it to hone the perfect speaker set-up, with options such as Sonus Faber or Wilson, without strangling the treble then it might be worth trying again.  One more thing, the drivers remember the settings, so if you set it to VRM mode and then uninstall the software you're stuck with the VRM tuned version until you reinstall the software and switch it off.  Then you can uninstall it fine.


If all you want is a headphone amp though the hardware itself is excellent for the money.  I'll do an A/B review with better amps (MF M1 dac and amp) in a week or so.


*I know there's more to it than that, but narrower sound-stage apart it sounds like a crude graphic equaliser.

post #5 of 7

Does it work well without the software on Mac?  Does it stop between songs when used just as a headphones amp and DAC?

Edited by DjAmTraX - 1/25/12 at 12:03pm
post #6 of 7

I cracked my VRM open and discovered a Cirrus CS4398 dac (!). There is a TI chip that I suspect is doing the loudspeaker modeling/room processing (which i don't use anyway). I count 5 other IC's for a total of of 7. It looks like there are a pair (one per channel) of 8 pin op-amps that drive the headphone output, which looks to be coupled through a pair of Jamicon 330 mfd 6.3 volt electrolytics. The "lytics" may be bypassed with some surface mount caps,(they're in the right place for that purpose, but my old eyes just don't see surface mount traces very well). The volume pot is a 10K stereo pot, which makes me think that is is in the analog chain between the dac output and the opamps. I have trouble reading the labels on chips, so I can't make out the opamps feeding the outputs. Maybe some younger eyes could let us know. All in all a well built little device for the price. Sound pretty darn good and those output caps could be swapped for better caps.....

post #7 of 7

Don't have a Mac, but, it does not display any weird problems (stops, etc) on my Windows 7 machine. I also have used it on an older (1.6 ghz celeron) laptop (Win 7) without problems. There is a Mac version of the software, and the dsp effects can be turned off in the software. I think the driver in the software package sounds better then the native driver (at least in Windows).

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