Answer to the OP: yes, a power conditioner doesn't hurt; but no, not that one.
 
As fireberd says, that type of "power conditioner" doesn't do squat to condition your power.
 
They're not entirely useless, though. There is a benefit to simply plugging all your equipment into a common bus, assuming that power strip has a straight connection to your service panel's N-G bus. Also, that cheap surge protector MIGHT conceivably save your equipment from a lightning strike (assuming it's fast enough; most aren't), but it'll also self-destruct the first time it does its job.
 
A UPS isn't necessarily any better. The cheap ones you get at Office Depot use the same kind of crappy surge protectors as the $10 power strips. What qualifies as conditioning will, at best, be a single inductor.
 
Real power conditioners and UPSs can be had, but they're not cheap. If you live in an area with exceptionally dirty power, it might be worth the investment. However, most parts of the U.S. and Canada do not have such horribly bad power that an expensive conditioner / UPS is justified. For most of us, it's enough to add an inexpensive UPS just so we don't lose data in a power outage. For $150-250 you can add a better-quality surge protector if you're in an area prone to lightning.

My pedal board does something useful. Idk what.

Also I have a heavy UPS.

Leadfoot
I have a Monster Power 3500 power conditioner that I bought a few years agi, and it's really helped me. Before I bought it, I would run into random noise in my system. After installing the power conditioner, the noise was gone and hasn't been back.

Another happy Monster Power 3500 user here. Used to live in an old apt building with crappy wiring, and now in the Southeast U.S. with constant electrical storms.  The 3500 has been a godsend.
 
Funny thing is, at the time I bought the 3500, I hated (and still do) the Monster Power company because of their bullying business practices (Look it up -- mind-boggingly crazy).  I couldn't see myself ever giving them any $$...
 
Then I walked into a Circuit City store on literally its last day of business. Most of the inventory was gone, and the few items left were mostly esoteric or blemished pieces. I was surprised to see a MP 3500 demo unit sitting alone on a shelf, marked down to $90 (from 299.95).  I tracked down the frazzled manager, and, after negotiating it down to $75 plus tax, I took it home.
 
After hooking it up, I immediately noticed a difference in sound (This was the crappy apt). Never had a problem with it since, and that was 8 years ago.

true sine wave battery backup surge is preferable with modern equipment... killer deal at costco
 
Why Choose a UPS that delivers True Sine Wave Output?
 
High end PCs and workstations include graphics cards, processors, and other devices that consume more power than home computers. Gaming PCs often have power hungry, high performance processors and graphics cards. And many federal, state, and educational institutions specify that new PCs have internal switching power supplies with ENERGY STAR® ratings. To meet all these demands and improve energy efficiency, leading manufacturers use switching power supplies with active power factor correction (Active PFC).
 
Power supplies with Active PFC circuits can be more sensitive to changes in input power. Their dependability improves when true sine wave power—the kind supplied by utility providers—is provided during an outage. Devices with Active PFC power supplies can shut down unexpectedly when using a UPS with simulated sine wave output, resulting in data loss or equipment damage. Here’s why: A simulated sine wave output has a power gap at each cycle. When the UPS switches to battery current, a power supply with an Active PFC circuit may detect that power gap and shut itself down. This power gap may not always cause the power supply to switch off, but any sudden failure can have serious consequences. UPS systems with that deliver true sine wave output prevent unexpected shutdowns and damaging stress.
 
To find whether your equipment uses an Active PFC power supply, check the device itself, review the user manual, or contact the manufacturer. For optimal performance, connect any equipment with Active PFC power supplies to a UPS system with true sine wave output.

Seems to be general consensus on power conditioners. Not a bad idea but you get what you pay for. When I put together a pedal board I generally put a Monster power bar with line conditioning as the first component. THey are under $200 and perform all the basic protection functions along with some AC line conditioning. There are 2 main reasons I use them. Firstly, they provide basic protection for users and equipment, secondly, if you read the fine print on the box you'll see that if you register the power bar with Monster they will insure the equipment attached to their power bar. I think the value is around $15,000, but don't hold me to that. It's really about peace of mind.

OK - I have read through this thread - and am AMAZED at the knowledge level folks have on these issues.  Well done - ALL.
 
I jumped in to read this thread because my issue is a bit different, but power consistency related.
 
I have a computerized rig, running some music performance software that hosts VST plugins and allows layering and zoning and all the nice midi control stuff I need - and all of my sounds live in the computer and are triggered by two midi controllers.
 
The ISSUE is that the rehearsal rental space we use for the current project seems to have slight momentary drops in voltage - they are not long or even noticeable with any of the gear, with the exception that one or the other midi controller (USB powered) would not actually get completely disconnected from being detected by Windows - but somehow would simply stop being able to trigger notes in the performance software.
 
If I were to have unplugged or turned off either controller, the software would detect that and issue a message box warning that a needed device was no longer available, and that message never popped up, nor did power ever actually turn off for either controller.
 
But still, somehow - the slight voltage variations were enough to where 5-6 times over a four-hour span, I would have to stop playing whatever song we were doing and restart the performance software (loading a ton of samples into memory and initialization and all of that), and that is something I HAVE to remedy prior to the next rehearsal.
 
My rig NEVER has had these kinds of things happen, before or after - only using the power at the rehearsal stage.
 
So - can someone please help me understand what I would need to pick up in order to keep the voltage consistent? (and again these weren't spikes, but very slight drops).
 
Most of what I read in these posts seemed to be referencing spikes, so I need some advice going the other way.
 
Thanks!!!!!!  :)
 
Bob Bone
 

Thanks all for your replies, thoughts and suggestions, as Robert says in #16 reply (above) I too am always amazed at the kind, intelligent and helpful answers that I receive when asking questions on this forum!
 
One ,more reason that I am proud to be part of this group of very fine people, the people of Sonar!

Bob, are you using a laptop? Reason I ask is Laptops sort of have built in power conditioning / UPS because they seamlessly switch to the battery if the power goes out. Never known a laptop to freak out when the power goes out.
 
But then if your audio interface uses a wall wart that could cause a hic-up, but most wall warts are sort of resilient to power surges. I use a USB powered interface for live playback,, wouldn't use it in the studio, but this is where they come in handy. 
But a quality UPS should even things out, they are not exactly portable. 
I would also have some sort of voltmeter hooked up when your in that space just to keep an eye on things. 
 
Here's a nice unit from good old wal mart-- Rack mount and volt meter
 
https://www.walmart.com/ip/APC-Smart- UPS-C-1000VA-2U-120V-Uninterruptible-Power-Supply-with-LCD-Display/21063354?wmlspartner=wlpa&selectedSellerId=1912&adid=22222222227015220885&wl0=&wl1=g&wl2=c&wl3=40880558072&wl4=pla-78810916712&wl5=9059799&wl6=&wl7=&wl8=&wl9=pla&wl10=112549731&wl11=online&wl12=21063354&wl13=&veh=sem
 

 
 

Bob, if you're using a laptop I'd suggest running on battery for rehearsals. Assuming, of course, that it lasts the 4 hours you need it to. You can buy aftermarket batteries for most laptops that may have greater capacity than the stock ones that came with your laptop. There are also add-on external battery packs that sit under the laptop. Either would likely cost less than a quality UPS, and avoid the need to carry around a heavy item.
 
Other than that, you could use an online (as opposed to standby) UPS. These don't just condition power, they actually serve as a power source, using an oscillator to generate a reasonably clean sine wave output. They're pricey and they're heavy. But they'll keep your line voltage steady and make you immune to most surges, sags, EMI and RFI.