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JDS Labs CMOY AMP vs BIOSCIENCEGEEK - Page 2

post #16 of 28
12/2/12 at 9:53pm
Quote:
Originally Posted by Red Haze View Post

I own a bass boost Cmoy from  HPA labs and couldn't be happier with it, when I bought it I turned the bass boost setting on and haven't touched it since. It doesn't distort the sound whatsoever. 
How do you turn on the bass boost feature? I bought one from hpa labs but I can't find the switch our any thing
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post #17 of 28
12/2/12 at 10:01pm
Quote:
Originally Posted by Carlos4996 View Post


How do you turn on the bass boost feature? I bought one from hpa labs but I can't find the switch our any thing

Because there is no bass boost switch inside. I'll assume the bass boost is permanent.

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post #18 of 28
12/26/12 at 1:39pm
Does the jds have a hissing sound?
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post #19 of 28
1/3/13 at 8:46pm

I use a JDS 2.03 cmoy BB and I have not heard any hissing with either my etys, UM2, or atrios.  YMMV.  As the JDS cmoy is so well regarded, if you find you don't like it for whatever reason (I'd be hard pressed to name one), you'll always find a buyer on the FS forum.  So, look at it this way.  For about $10-$15, you get to spend a couple of months with one of the best cmoy's available.  And the BB function is very well executed.

 

As my cmoy is my "fun" amp, the BB is always on.  When you're home, add higher voltage DC and enjoy the bass.  I bought this DC and a barrel adapter: http://www.powerstream.com/ac-2405.htm

 

Adapter is after the jump.

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post #20 of 28
1/12/13 at 12:55pm

Just stumbled upon this post and figured I might as well end the suspense using the 24V power supply.  In two short words, but it.  It will open up the cmoyBB in ways you never thought imaginable.  I look mine, so much, I ordered two.

 

Use the reseller I used  Good prices and they also sold the adapters to fit the male pins.

 

Much more slam and authority to the little cmoy.  loving it.  It's a $20 upgrade.  And it's worth every penny.  I even schlep the AC adapter to Starbucks.  That is how much I love the added current.

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post #21 of 28
4/1/13 at 7:33pm

I am of little experience but just bought the BSG amp, so I'm hoping that my imput be useful. The guy who makes em allows you to customize your order for no extra charge (select battery options(9V vs 18V), choose an OP amp, select tin type, LED color ect...). with the the extra $20 (vs buying the JSD model) I went out and bought two different OP amps and 2 rechargeable 9V batteries w/charger. It was a plus for me that he ships from fairly close to where I live so shipping time was like 2 days. He also included batteries with the amp when he shipped it. If it sounds about the same as the JSD BB, I'd say that it was a pretty skippy deal for me especially because I got everything that I wanted (18V, virtually silent neutral OP amp, and I got to use it right when it arrived). The BSG so far done a pretty good job at dragging the bass and detail out my $25 pair of etymotics (ETY5K lol).  

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post #22 of 28
4/2/13 at 7:38am

Yes, I wonder if the 18volt BSG would do any good with HiFiMan HE-400's as I hear they are not that bad to drive vs Fostex Orthos....

Anyone comment on that pair up please ! ?
 

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post #23 of 28
4/6/13 at 6:39am

I have a BSG cmoy on its way to me now....it is in transit....hopefully it will arrive today....I can not wait to try it out will my Grado's

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post #24 of 28
4/7/13 at 8:54pm

Are you running it at 9V or 18 volts ?

Will 18 volts provide more kick/volume that 9 volts ?

My 9 volt is at full volume almost with my new Hifiman HE-400's while I choose a desktop amp.

 

I don't know why BSG does not run 30-day listings vs being on and off ebay.

I missed his listing due to this, so bought a lesser Altoid for the money on ebay 2 months ago.

People will find it either in headphone amps or altoid search terms.

 

Keep these puppies up on ebay 24/7 !


Edited by MunkyNutz - 4/7/13 at 8:59pm
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post #25 of 28
4/8/13 at 2:30pm

Here is the cmoy that I just received from BSG.

 

It is a very nice little amp, pretty impressive .

 

 

 

 

 

I ordered mine with op-amp TLE 2082

 

I have a pair of JVC FX40 iem's coming my way also......this will be my portable rig for on the go.

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post #26 of 28
4/9/13 at 10:14pm

Very nice, I'm going for the tiger tin one !

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post #27 of 28
4/9/13 at 11:02pm

Both of these seem to be good options.  Made a number of CMOY's myself and these both seem to use quality parts and be well made.  I do like the use of an actual PCB rather than just perf board on the jds labs version and though I'm typically not much for bass boost options because i prefer to keep the spl vs frequency curve as flat as possible....if its something you can turn on and off....why not.

 

I laid out a few boards myself using high end components high precision vishay resistors, panasonic poly film caps, alps potentiometer etc but keep in mind my boards aren't as easily integrated into an altoids tin since they dont' have the screw type input/output connectors.

http://diyourfaceoff.com/diyourfaceoff-com-headphone-amplifier-tindie-fundraiser/

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post #28 of 28
4/13/13 at 5:10am
Quote:
Originally Posted by MunkyNutz View Post

Very nice, I'm going for the tiger tin one !

That was a nice looking tin, I about got that one also.

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