this Little Bear P1 a.k.a. Indeed G2 headphone amplifier is very powerful and it warms/ages the sound slightly

A Review On: Little Bear BK 6N11 12AU7 6922 Tube valve Headphone Amplifier

Little Bear BK 6N11 12AU7 6922 Tube valve Headphone Amplifier

Rated # 80 in Desktop Amps
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Review Details:
Audio Quality
Purchased on:
Price paid: $45.00
Posted · Updated · 17148 Views · 7 Comments

Pros: Very high power; cool glow (which actually comes from an LED, not the tube); only $45 including shipping

Cons: you need to adjust screws to balance sound b/w left and right; cracking sound when you turn volume knob

Just doing a quick review of this amplifier that I got from China. If you look at my other amp reviews, you'll see that I have tried the Alpen E17 which I thought was underpowered and had an average DAC making it a total waste of money, and that I also tried the Objective 2 which wasn't underpowered, but wasn't something I would call powerful either.


Please note I tested this with a $14 bulb I purchased off of Ebay, an RCA model. So I'm not using the bulb it came with although I didn't listen to see if that made a difference.


Well this thing is SUPER powerful. To listen to it without hurting my ears, I have to set the source's volume (my laptop headphone jack or my phone headphone jack) to like 5-10% and then I set the volume on this to about 25%. This would almost certainly make my ears bleed if I turned its volume to the max and turned my source volume to the max. So it does the most basic thing an amp is supposed to do: deliver as much power as you could possibly want. It's rated at "450mW" based on the ebay site, but it doesn't say what impedance this was measured at. It does say it can handle a 600 ohm headphone, though, so perhaps it was 450mW @ 600 ohms, which would make this quite a powerful amp. I wish I had an HE-6 to see how much power this can really put out.


It also does its job in delivering bass and warm frequencies. I don't know if the tube is doing anything; but the sounds do sound slightly warm and aged, i.e. it makes it sound like what you might hear from an old jukebox or stereo system..


I also hear very little line noise and it's easily ignorable (you have to really listen for it), although there is a lot of loud cracking (probably due to its power) when you plug and unplug the source and there is a little bit of cracking noise as you turn the knob to adjust the volume.


Overall, though, due to its very low price, its high power, its decent sound and its ability to let you enjoy a tube amp for a measily $45, it deserves 5 stars. I think I would recommend this over the objective 2 amplifier, for example.


Last thing. At first, the sound in the left side was louder than the right, by a lot, but there are two orange screws near the tube that you can adjust to fix this.


I too have Objective2 and P1. P1 rocks for its price and power. and O2 for its transparency [but pay additional 100$]
P1 is an exceptional value and performance for the asking price. Highly recommended. And simple mods will do this product some good.
comparing P1 and O2, SQ is definitely inferior to O2 eg:- soundstage is narrow, sound is warmish, less details, more forward sound signature. but for some well recorded and spacious airy sounding songs, P1 sounds very good.
Good review mate :-)
Thanks a lot for this review, and I wanted to ask if you have tried any other of Little Bear's products because I am currently looking at both their tube amps for desktop set up, and also checking oiut their potable dac/amps. DO you have any recommendations that are worth it at a 100 $ or less? I would really appreciate the assistance.
This is  their best sub 100$ amp
gotcha that is good to know and thanks for the info is there a better one either little bear or not that is around 120 to 150? because I am looking for something I can use as a dac/amp but I know those usually cost around 300 for a good one. I do no know I m just trying to figure out something to do in case the sound card I have ends up not working eventually because it has been inconstant lately 
I am getting a UD 110 v1 sometime soon, and I wanted to know if this amp would be an okay buy for being on a budget to pair along with it and the DT 990's I would be using(also have soundMagic HP100), someone said I could not really use this because it was only a pre amp. I would really like some feedback
I have just purchased one of these for my office.  Any headphone recommendations for this amp?  I use Senn HD600's at home with my Schiit.  Also just picked up a Signstek Mini 24Bit 192Khz Coaxial Optical USB Input DAC for $30 from
Just a quick observation regarding your review.  I may not have the most expensive tube amplifiers and DACs (Schiit Valhalla 2 and Modi 2 Uber) but I have to say I was EXTREMELY impressed with the little setup I put together with the Little Bear P1 with the stock 12au7 and using a Signstek Mini 24Bit 192Khz Coaxial Optical USB Input DAC I picked up from  My Total investment was $65 for the two pieces and I have to say it is super quiet and has a boat load of power.  It drives my Sennheiser HD600's with plenty to spare at about 10 o'clock on the pot.  I use a $70 Sony Blu-ray player as my source connected via the coaxial output.  I also have it attached to my laptop with the USB cable.  Not a bad deal for anyone looking for a small portable setup.