There is no lag and the keys are great with velocity.

The harder you strike, the faster the key goes down and the shorter is the time between the two switch events

My only issue is, the keys are a little too stiff

so I hit the wrong key sometimes

Now, I must say the keys are absolutely suitable for the job I got them for

The issue with Win7 64 bit is a registry key HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}that needs to be modified with the addition of a new key (right click right pane, NEW/KEY) then when added rename so renamed "UpperFilters" (case sensitive!) and input a value of "ksthunk" (case sensitive!

They are also small, so don't be surprised if you press the wrong key down or two keys down at the same time for that matter.

I wish the keys were a little more sensitive because when I tap very lightly I don't get much of a

Also, if I depress these upper keys (C#, F and A) and THEN depress the middle A, the upper keys cancel out

The keys are fairly responsive and it's good as a portable keyboard to bring with you anywhere!

Especially the first lower and middle c-keys are a problem

Arpreggiator works, tap tempo works, octaves work, sustain works (but only while you are pressing it)...also, so far, i can link any key or button to anything in FL Studio....sorry for rambling, hope this helps.

The velocity sensitive keys are nice, and so are the octave buttons that allow you to easily shift between octaves.

The key's felt great

The keys and housing are sturdy.

This keyboard is absolutely tiny + no knobs or anything + extremely stiff and springy keys, but it's still $75

It takes too much effort to press the keys and now doesn't work at all

My only criticism is that the keys are stiffer than I would have anticipated, and the touch sensitivity is a bit tricky to get used to at first.

I only gave it 4 stars because it lacks a pitch wheel and the keys are not as sensitive to velocity as I would like.

The keys are pressure sensitive meaning the amount of force pressed will dictate your sound output

One weird "defect":For some reason, if I depress the middle A key, the C#, F and A above will not work

Only complaint I have about this is that the keys are a little stiff

The keys are a bit stiff and since it has velocity as well, you can overcompensate and have uneven loudness.

The keys certainly aren't the greatest

Very responsive keys

Velocity sensitive keys not bad at this price

The keys are kinda finicky

The keys, which are small but comfortable, are quite nice

keys are a little too stiff

The keys are solid and have a good spring to them, the built in arpeggiator is awesome, and with the included software, you can program up to 4 presets.

This thing is small and the keys dont feel very sturdy

Aside from that, the keys aren't very responsive, they sometimes didn't 'fire' even with a full, hard press

The keyboard works well the only I do not like about it is changing octaves it doesn't just follow the keys up and down like normal keys hard to explain

The keys are pressure sensitive and not completely

It don't seem like it will break unless u carelessly pack or throw heavy objects on its surface and damage the keys

downsides being that the keys are small enough that i somtimes hit wrong keys, and the keys are 'gooey', there for the velocity controll is difficult, yes, t HAS velocity controll.

The keys:The keys are really good for a low profile keyboard such as this

The keys have a spongy feel and I do not like the velocity curve

The keys are also very difficult to press