Well even most amps rated to 20 hz will probably play 16 hz, you are going to have a hard time getting something to support the spec of actually "16hz" this has more to do with the fact the speaker is actually efficient and tunned to play that low, not really the amp spec. If the info is down that low with any kind of authority than it will pass, the amp and any amp that I would know of is definitely down probably 3 to 12 db anywhere around 20hz...
Now thinking back to a Zu rule, they automatically boosted their amps in the Definitions(the ones with built in amps) by actually adding 10 db of boost just in the 20hz alone setting. Almost anything playing on most recordings thru your speakers or anybodys will need a lot of help down that low, unless you have totally perfect room acoustics, with like built int 18 " free air subs built into your foundation or something to boost that much power at those frequencies, which you still might not hear from what I understand, but feel some of the air and vibration. I can tell you this, I have had some of the best speakers show me a spec of 30 hz and just under... They have had better bass due to the tunning was really capable of it.
Most speakers rated at even 20 hz which is obviously for the most part very high end ones that cost some money still in my opinion have difficulty proving or producing it in any kinda viable musical way that will make or break a system.
My suggestion again, Don't get caught up in that spec. even with the Velodyn I bet it will actually produce the signal lower than the 30 hz rating and even if it does will not be that noticeable, so yes honestly you will need about 12 to 20 db of bass boost in the 25, or 20, or 18 hz range to even hear it mostly! This will be hard to do without using pro gear like the rane totally cranked up to its max gain in those frequencies and an amp almost any will do it, but if you fed a signal that deep for any duration it would probably just putter out or overheat anyway in most cases, were talking most recordings will retain a 16 hz signal for about 1 second if your lucky, you will not miss much.
By the way vinyl for example has rumble filters many times on the phono amp to actually Kill off any of this noise at 25 hz and below! Mine can produce 20 hz even thru a speaker rated to be 30 hz.
This stuff is getting taken a little to far honestly, your problem and major wall to hit would be "So what if you did hit 16 hz" because you will probably NEVER produce it in your room, unless you have some money invested in testing the room acoustics, and probably even a lot more money in actually tuning your room to produce it. Pick a good setup for you, money, function, and overall will it sound good on your speaker? It will be fine with any of these amps, ultimately the choice will be whats best to fit your needs...
I will warn you worrying about the 16 hz spec will have you chasing the dragon. Again it was barely any difference with the 20 hz 10 db bass boost as most music never would produce it anyway, I don't care what the rating or specs are... Make sure you can hear and feel everything between about 40 hz and 120 hz and you will be knocking the walls down!
By the way those amps have some serious current draw it looks like... You will need for mono's at least 2 dedicated 15 amp power lines. 13.5 amp is not slouch thats about double any mono I have used, and a 15 amp circuit should really only be run up about 12 amps. Thats why many go with 20 amp breakers in this case. I would stick with Stereo versions or some kinda Class D efficient amps.
Now thinking back to a Zu rule, they automatically boosted their amps in the Definitions(the ones with built in amps) by actually adding 10 db of boost just in the 20hz alone setting. Almost anything playing on most recordings thru your speakers or anybodys will need a lot of help down that low, unless you have totally perfect room acoustics, with like built int 18 " free air subs built into your foundation or something to boost that much power at those frequencies, which you still might not hear from what I understand, but feel some of the air and vibration. I can tell you this, I have had some of the best speakers show me a spec of 30 hz and just under... They have had better bass due to the tunning was really capable of it.
Most speakers rated at even 20 hz which is obviously for the most part very high end ones that cost some money still in my opinion have difficulty proving or producing it in any kinda viable musical way that will make or break a system.
My suggestion again, Don't get caught up in that spec. even with the Velodyn I bet it will actually produce the signal lower than the 30 hz rating and even if it does will not be that noticeable, so yes honestly you will need about 12 to 20 db of bass boost in the 25, or 20, or 18 hz range to even hear it mostly! This will be hard to do without using pro gear like the rane totally cranked up to its max gain in those frequencies and an amp almost any will do it, but if you fed a signal that deep for any duration it would probably just putter out or overheat anyway in most cases, were talking most recordings will retain a 16 hz signal for about 1 second if your lucky, you will not miss much.
By the way vinyl for example has rumble filters many times on the phono amp to actually Kill off any of this noise at 25 hz and below! Mine can produce 20 hz even thru a speaker rated to be 30 hz.
This stuff is getting taken a little to far honestly, your problem and major wall to hit would be "So what if you did hit 16 hz" because you will probably NEVER produce it in your room, unless you have some money invested in testing the room acoustics, and probably even a lot more money in actually tuning your room to produce it. Pick a good setup for you, money, function, and overall will it sound good on your speaker? It will be fine with any of these amps, ultimately the choice will be whats best to fit your needs...
I will warn you worrying about the 16 hz spec will have you chasing the dragon. Again it was barely any difference with the 20 hz 10 db bass boost as most music never would produce it anyway, I don't care what the rating or specs are... Make sure you can hear and feel everything between about 40 hz and 120 hz and you will be knocking the walls down!
By the way those amps have some serious current draw it looks like... You will need for mono's at least 2 dedicated 15 amp power lines. 13.5 amp is not slouch thats about double any mono I have used, and a 15 amp circuit should really only be run up about 12 amps. Thats why many go with 20 amp breakers in this case. I would stick with Stereo versions or some kinda Class D efficient amps.