Topic: My Naiant littlekit INA111 Kit preamp project

[Roger Gustavsson]

That $5 preamp will need some more components to work safely. More like my schematic presented earlier:




Maybe some protecting diods have to be added? I was not going for phantom power at all. The battery supply was intended to be +/-7.4 V. I think that would allow for an output of 5V (about 2V less than the supply rails). My gear needs 2.5V for 0dBFS. Noise is not a problem with the INA217 as long as the gain is above 20dB. I use 25-40dB most of the time. The mic preamp was intended to sit just 5-10 cm away from the balanced input of the soundcard. No need for capacitors in series of the output as there are some at the input of the soundcard.


Roger

[Chuck]

Comparison vs the Grace V3 here:

http://taperssection.com/index.php/topic,125198.msg1664267.html#msg1664267

[Chuck]

My Phish 08-01-2009 - C-481 > littlekit source:

http://taperssection.com/index.php/topic,125313.new.html#new

[Chuck]

Electric bluegrass recorded with AKG C-462 (A/B) > Naiant littlekit (INA111) > iHP-120

http://taperssection.com/index.php/topic,125707.0.html

No bass roll-off, EQ or compression was used.

[Jammin72]

Perhaps a fixed gain doesn't have commercial appeal but it does indeed work in niche markets.  Please see the venerable fixed gain Oade M148 for example. 

[Chuck]

My Naiant pre-amp doesn't have fixed gain.
See the photo below. My kit pre-amp is in the middle with the two knobs and red LED.

None of the Naiant littleboxes are fixed gain... as far as I know.

I have to say that I am very happy with mine, so far.

[Chuck]

Cracker - AKG C-461 (DIN) > Naiant littlekit (INA111) > iHP-140

http://bt.cotapers.org/torrents.php?id=163&torrentid=210