I wish I could say I am a fan of Bitmain products... But that would be a lie.  Having owned the A4's before jumping into the L3's I can say that the build quality seems to be better on the A4's.  Inno did a good job and appeared to use rugged well made stuff to build their miners.  They are heavy, and ruggedly made.  Even the heat sinks on the boards are massive.  After that experience with the A4 you have an expectation of something similar with the L3 miner, but it isn't built nearly as ruggedly as the A4 sadly.

The L3 it is a small miner in dimensions compared to an S9 or and A4.  It is pretty light weight.  It has the same looking controller board that the other Bitmain products has and it uses the same GUI.  Boot times are also longer like the rest of the Bitmain products.  The A4 boots much faster and starts mining faster than the L3 or other Bitmain products.  The heat sinks on the boards look like the same tiny heat sinks used on the R4 and S9 miners.  

So far I have only tested the L3's on multicoin pools at Prohashing and now for a short while on Zpool.ca.  Overall with the proper settings on Prohashing it seems to be working pretty well.  For some reason the L3 doesn't seem too crazy about Zpool.ca.  Maybe it just needs to run and it will average out between the high and low hash rate swings.  Or it may need some specific settings to get the best performance out of Zpool.ca.  I really just don't like to see 500mhs only mining at 200mhs or less even if it is for a short while.  Of course I love it when it zooms to almost 700mhs, but hey that's how I roll! LOL  

So far it looks like power draw is consistent.  Power use climbs as the ambient temps climb and the fan runs faster.  And as I just reported the power use drops as the ambient temps drop and the fan speeds dropped.  In either case even  when the fan is running at higher speeds it does not ever really get "loud".  I would say noise from the miner is on par with a GPU rig.  So not loud at all really.  

At this point I have to say this miner hits it's target.  It hashes pretty close to advertised rates, power consumption appears to line up with the advertised consumption figures, it is quieter than I thought it would be, and is small and easy to find space for it.  You could run this miner in your home and not have to worry about crazy loud miners like the S9 or A4.  

My only concern at the moment is Bitmain's horrible track record for reliability.  This miner is doing everything I could have asked for so far in my testing.  I want to try mining on Nicehash, and over on Litecoinpool to compare performance, but so far it has done very well and I am pretty happy with the L3.  

Now hoping that they will hold together and we don't have more Bitmain hardware issues that seem to be plaguing the rest of their product lines.  I saw yet more reported failures out of the box for the latest batches of the R4's just today.  It does not give me any confidence at all when Bitmain is still shipping trash like this.  

So far I love the L3.