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Leckerton Audio UHA-6S MKII Reviews


Excellent all rounder with only minor design issues


Pros: Superb sound quality in all aspects; Long battery life; Plenty of power; Option to disable USB charging; Very good DAC; SPDIF in both ways

Cons: Heavy; Easy to accidentally turn volume control; Recessed USB socket causing cables to fall out, GSM noise susceptibility in OPA209 version; DAC limited to max. 48k/16bit via USB

This review describes version with OPA209, but other ones should perform on par or better and probably without GSM noise issue. The amplifier is powerful enough to drive power hungry headphones such as orthodynamics, but also has very low impedance for balanced armature IEMs.   DAC, while very good, is not the absolute benchmark - but that is to be expected in an integrated device. Opamps can be replaced - they're SO-8 mono versions attached via a DIP-8 adapter. The only actual drawbacks of this amp are related to ergonomics. Especially the very sensitive potentiometer can be problematic.

Great value, good-sounding portable amp and DAC.


Pros: Great amp. No hiss. USB charging switch (so you don't drain your notebook's battery). Works with the iPad CCK. Rollable opamps. Auto-selects input.

Cons: DAC quality from USB not as good as other options available.

While I usually use an iPod or iPhone with a Fostex HP-P1 and my Symphones Magnums (modified Grados with far better drivers) in my transportable rig, I've found that the amp in the Fostex isn't as good as it could be and that best results were with a Triad Audio L3 or ALO RX3-B. While I've seriously considered the latter after owning the former, given the good reputation of the UHA-6II I wanted to see if I could get great results from a single-ended amp first.   The UHA-6 has certainly delivered, with a clean, clear sound and a lack of hiss. While I chose the stock opamps when I bought it, I swapped in a pair of AD797B opamps as I don't need to spare batter life. The difference...
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Pros: Portable, Sturdy, Easy to use, No hiss with iems

Cons: You will want to listen forever and not go to sleep...

Right when I thought my gr07's couldn't get any better. This little amp brought my listening experience to a whole new level. Before with just the j3 and the gr07, the sound could get congested at times with not enough breathing space, but with this amp, it opened things up, it allowed everything to flow naturally. This amp is also super transparent (with the opa209 op amp) it shows you everything cleanly and effortlessly. If you haven't already gotten a portable amp for your dap GET ONE NOW and thank me later. Also, this amp works wonderfully for iems, there is absolutely NO noise or hiss at all.

Leckerton UHA-6S.MKII(AD8610)


Pros: Small, all metal casing, high quality, easy to figure out

Cons: None so far!

I bought this amp a couple days ago, and have put about 20 hours of burn-in time on it. I am using this for IEM's and portable use with very little use with full-size cans. Right when I turned the Leckerton on it seemed like the curtain had been lifted and the stage opened up. Everything sounded crisper and the bass tightened up a lot. The dac is extremely quiet with no hiss or noise at all with IEM's, I really enjoyed the quality. I am using an iPod Classic 6G for portable use, and it is not too much bigger and fits in my pocket without a problem. If you are looking for a portable amp/dac in this price range, just save yourself some time and go for the Leckerton!
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