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Comments: This is good string. I have been using it for two years now. It is easy on the arm, has great feel and
control. It has the power when I go for those put aways. I put it in my Head Graphene MP at 54 lbs.
Comments: TW did a great review on this so I thought I would give the 16g version a try. It was good. Then I got
the 17g. It's a lot better feel and spin. But a little too powerful. So I think 16g is better for me.
Comments: Great string -- before this string, I played with multis, or gut hybrids. I moved to a full set of this,
strung at 55 lbs in the mains, and 53 lbs in the crosses. Now, my string of choice. Good spin and control, good power -- I found it
quite soft and comparable to some of the multis I have used. If you are a first time buyer of a poly, I think this one isn't a bad
place to start!
Comments: Pros: good durability, easy to string, fairly decent spin, price is reasonable. Cons: Brutal on the arm, I
think this is classified as a "soft" string simply because it loses tension so quickly. I have found almost every other poly (even ones
with high stiffness ratings) to be easier on the arm than Sonic Pro.
Comments: I have had these strings since February and they have lasted for a good while, they can put a lot of spin
on the ball if you make it, and it is great on the comfort side, but I don't know there is just something about it that doesn't feel
right at times. I am switching to a hybrid of Luxilon ALU Power Fluoro and Babolat N.VY. I use the Head Graphene Speed Pro.
Comments: Luxillon killed my elbow so I've been searching for new strings. I went through all the Technifibres,
Gammas, Babolats, and Wilson strings and this string is the best. It is really durable. The strings haven't moved in two months of
heavy baseline and all-court play. I string at 61 lbs and they lost tension quickly, but have stayed steady after the first two hits. I
have two racquets strung, one with this Sonic Pro 17 and one with Babolat RPM and the SP is just as good for half the price.
Defintely a great string!
Comments: Great string for first hybrid for my 12 year old daughter! Before she played with a full bed Forten Sweet
17. Since she has started breaking strings too often, her coach tried a full multi RPM Blast and she obtained immediate elbow
pain. I cut it out and experimented with Sonic Pro 17g mains at 46 lbs and Sweet 17 crosses at 52 lbs. The effect is amazing!
Control and power but tender to the child's arm! Plush but not toothless! Lasts much longer than full syn gut. Great combo for
advanced tour playing girls!
Comments: It's a comfortable string in the mains with NRG in the crosses. Feels better on my arm than a full bed of
Comments: It's a "bombastic" string, and it's really comfortable and durable. It has a great power and the ball spins
very well. It's the best string I've ever tried.
Comments: This string is amazing. I use it a poly hybrid as my crosses with Alien Black Diamond 16g after
switching to this from my full bed of Alien. I've noticed a great increase in spin and control with a nice little extra pop to help me
get the ball deeper. All in all I'd recommend these for anyone looking to get a little extra "oomph" in their game.
Comments: These strings are awesome. The strings drop tension quickly at first but then
stay the same for the next months. Love these strings.
Comments: Changed to this after using Lux ALU Power Rough for years. This
is a better string on all categories. Better feel, softer on the arm,
and yes, more spin. And cheaper! I'm glad I found this. I've been using it for
almost a year now with a Head PC600, strung at 25/24 kg. I'm a 30 year old aggressive baseliner.
Comments: Very disappointing, although this is the recommended string for my Head IG Extreme Elite.
I have also tried Gosen AK Control 16, Prince Lightning Pro 16, and Head IntelliString Power.
All of them I strung at 55lbs and using the Head Smartsorb vibration damper. They all felt better than the
Sonic Pro 17 strings. By far the best feeling string was the IntelliString. The ball impact had a
solid, deep popping sound while generating spin and getting the ball back deep was easy.
Control on volleys is excellent and there is very little vibration, making it the most
comfortable feeling of all strings I tried. By contrast, the Sonic Pro strings felt like I was
hitting with a wooden board. The ball impact made a higher pitched pinging sound. I could not
generate as much depth or spin and was constantly searching for the sweet spot. Vibration
was also noticeable, as was the lack of power. I felt forced to try to hit the ball too hard to get
pace and spin, resulting in a loss of control. I have to recommend the Head IntelliString as
being way better than the Sonic Pro.
Comments: It's got loads of power, with good spin and soft feel. I have played Tecnifibre Pro Red
Code 1.25 (17) @ 56 lbs. for the past year. I installed the Sonic Pro 1.25 (17) @ 55 lbs. and
noticed much more pace, spin, and depth. I was suddenly hitting huge, heavy groundstrokes
and serves that exploded off the court. High racquet speed is a must with this string to get
the most out of it because the spin comes from the free sliding of the strings and snap back
as opposed to a rough texture. To get the strings to slide and snap back, you need a lot of
racquet speed. The harder you swing, the more control you get with this string. The power
of this string allows you to swing at a steeper angle to generate even more spin to produce
very heavy balls. This string would work best in a heavy topspin, young, high level player -
i.e. a nationally ranked jr., college player, or touring pro.
Comments: I've just hit with this today and my first reaction was "WOW"!!!!!! It gave tons
of power and control. I feel the best shot is a flat one with this string because the 17
gauge gives it enough spin that it can keep hard shots in. The strings don't move at all
when you hit even on a slice of toppin shot. Overall a great string for a big hitting flat
hitter but can work great for topspin players too!
Comments: High head speed unlocks the power in this string. The absence of friction between mains and crosses
makes this a heavy hitter's dream. You can literally feel the ball exploding off the stringbed. Thank you Tennis Warehouse for this
Comments: Not the best shoe I have ever used. Not durable at all. There was a big hole in the front after only a
month. It is quite comfortable, though, and can be worn for casual wear.
Comments: Since I've been stringing racquets with Head Sonic Pro, my customers keep asking for it. Excellent touch
and feel string. Excellent spin potential, if your technique is right. Keeps its tension for a long time. Overall, great value for its
Comments: My Prestige MP came pre-strung with the black version of this string. I was amazed at how a factory
strung racquet could perform. I have since restrung one of my prestige with with Head Natural in the crosses and Pro Sonic in the
mains at 60 lbs and it is amazing. The other I have strung with a full bed of Pro Sonic for outdoor play. I must same I am well
impressed with both set ups. There is good control, feel and power. Good control feel and power the hybrid is fantastic. Durability
is equally good. Overall, I will give this a 7/10.
Comments: I've always used a synthetic gut. When I changed to a Radical with
Sonic Pro I thought it wouldn't suit. Control on top spin is good, and durability makes up for loss of bite on spin. It does lose
tension in about 10 hours of play.
Comments: For a softer copoly string, this is very good. Good spin & control; not a lot of power, but they do lose
tension pretty quickly. I'm using this in a hybrid string job. Sonic pro 17 for the mains and head fxp 17 for the crosses. I get about
6-8 hrs before the mains start moving a lot. They end up not snapping back into place anymore and my shots start to sail long.
Comments: I just bought a new Head Youtek IG Extreme OS Racquet with this string and I found that it gave me a
better feel of the ball as well as control. This is my first polyester string. I am a 3.0 player with an old school game with not a lot
Comments: Been using this string for about 2 months after switching from Luxilon Big Banger rough (arm
problems). I needed a softer string and wanted to stick with a full poly bed so decided to give it a try. I'm glad I did, as I don't
really notice a big difference between this and the Lux, besides the fact that I haven't had any arm pain! Spin and touch are great
and tension has been good too. I probably get about 10 matches in before the strings start to move - once they start to move a
little too much I do cut them out as they don't show a lot of wear but have dropped some lbs. Give it a shot if you need a soft poly
- you won't regret it.
Comments: So I decided to write a review for these strings because they broke today. (I got it strung at 57 lbs from
9/25 to 12/13 on a LIQUID METAL 4) So that's about a month and a half. But don't worry about the durability, I just play like 4
hours 2 days a week and I have a really good serve, I'm guessing maybe 80-90mph. These string are really awesome I love how
soft the strings are, they almost don't make any notches on the other strings over lapping it. Also they stay REALLY REALLY
REALLY straight for the time I used it. I never had to adjust the strings because they were never out of place. As far as the
performance of these strings the spin and power on these are great. Now I read a lot of reviews about how the Sonic pro doesn't
give that extra umph, I didn't have a problem with that but I think it was because of my racket, the LIQUID METAL 4; it was known
for its awesome spin and power. It does me good as a hybrid player and has a perfect blend to my racket. I highly recommend
this string if you're a hybrid player.
Comments: I have just strung this in my holiday stick (ti.carbon one 1200) and have found this too underpowered
and it lacks spin potential, though I think it'll do well in a hybrid with Babolat pro hurricane tour, revenge or Luxilon big banger. I
like how this is soft and provides decent control and feel but it just needs that extra umph from a spin string, IMO.
Durability and tension maintenance: I'm not a string breaker (even though I hit hard with topspin and on the sweet spot) so
durability isn't that much of an issue. Tension maintenance is better than my normal prince poly exp 17, which drops tension after
3 hours of hitting and starts to completely die after 2 weeks (strange I know) but this string hasn't dropped a pound!
Great string in a hybrid.
strung @ 56-58lbs
Comments: I've been playing with this string for over 2 months now. I absolutely love its durability. I hit the ball
pretty hard, although more flat than with spin. Tension maintenance also seems very good. I would be surprised if it dropped 10%
yet. The only problem I have with these are that they practically have no bite on the ball, which means minimal spin. Usually when
I play with synthetic gut or multi's, the strings are just covered in felt, like as if the strings changed colors to green. But w/these
I'd be lucky to get just a few felt matches in an entire session. Other than that it has descent pop to them, and I really like the
touch up at net. And of course very arm friendly, not even close to arm soreness.
Strung @55 on Head Youtek Radical MP (Black sting btw)
Comments: I tried the black version in the full string-bed and found it to be a comfortable, arm-friendly poly. It is
however very smooth (almost slippery to the touch) and I struggled to control the ball during hard court matches when the balls
were losing their felt. I tried it in the crosses with Tecnifibre Black Code in the mains and have found this to be an excellent
combination. The Black Code provides the bite/spin and the Sonic Pro provides the comfort and pop in a more durable and cost
effective way than a multi.
Comments: I've tried a number of co-poly strings both as a hybrid and in full sets, Head Sonic Pro 17g has been my
favorite. I've played with all three colors, they've felt the same and played similar though I know others have had a different
experience. I've had some inner (golfers elbow) in the the past, not from using polyester strings, but even at 60lbs (as a test),
which is much higher than I normally use, I did not have any discomfort immediately after or the next day.
I play primarily on the weekends several hours at a time and re-string monthly. I like how the sting starts to play after about an
hour in, not that it plays bad or harsh at first. There really isn't any shot that I feel that I cannot hit with the string, power, touch,
spin or flat. There is some nice ball pocketing to be had from this string as well. I string and play at lower tensions, 53-57lbs. I'm
a lefty baseliner who tends to hit flat, though will use looping topspin shots if I feel it will disrupt an opponent. I play almost
exclusively on hardcourts and prefer singles. I've been using this string in the Head Youtek Speed MP, but am consider the Youtek
Prestige MP after a proper demo.
As a side note, I was interested to see if I could generate more spin or a slightly heavier ball with some of the shaped strings such
as TF Black Code and I have not experienced any difference despite the advertised or assumed advantages of this type of string,
particularly on kick serves (my favorite). But again, I don't want to take away from anyone else who has had a different result. I
know and trust my strokes and equipment, am sensitive to changes in either and Sonic Pro has been a great string for me. As a
final opinion/endorsement; my wife wanted to try a set in her Volkl Attiva 6 and she is also enjoying the string. It was strung at
55lbs. Her previous string was Wilson NXT at 57lbs.
Comments: Pretty solid string. Good durability (Got a whole season of playing on it, playing ~3 hours a week for 3-
4 months). Pretty soft (no elbow pain for me) and has a decent amount of power to it. Feel is alright and can generate decent spin.
I think it would do well hybriding it with others as well. Strung at 57# on a Head Flexpoint 4
Comments: It's very durable but I had a lot of trouble creating spin off of my Flexpoint 6 racquet... I cut it off after
Comments: This string is amazing I use it at 60 on my head prestige midplus and it lasts. For a month does not
lose tension or feel. I play 16-18 hours a week. Great spin potential before this I used Luxilon big banger alu power rough sonic
pro is better and cheaper.
Comments: AWESOME is the only word that really describes it. Put it on my microgel
prestige mp and superior control was eminent.
Comments: This is a soft feeling poly. It delivers adequate power and good feel. I have it in my Speed MP (18x20)
and love it!! String it about 10% under what you normally prefer and play on!!!! No elbow issues so far (on my 2nd set of Sonic
Pro 17). This one's a keeper.
Comments: I put this string in my KSix one tour at 56 lbs, and I found it to be overly soft to
say the least. It is a great control string, but it is too soft and I found it to be detrimental to
the power of my shots. However, I was able to place the shots with significantly higher
accuracy than I has able to before. If I were to use this string again, I would definitely put in a
hybrid with natural gut or something of the like.
Comments: The black Sonic Pro 17 is not the same string as the white and orange stuff. Not only does in differ in
the color, it also differs in playability and durability. The black stuff is crisper, has slightly more pop and does not have the same
durability. There is black string around everywhere these days and not too sure if Head made this (as the package indicates) or if
someone produced it for them, but guaranteed it is not the same Sonic Pro. Having said that, one may very well opt for this string
given it's characteristics.
Comments: I didn't think this was a Poly when our stringer put it in. I only realized it when I wondered why it hadn't
broken after 4 weeks. Week seven and it's dead, but plays like a softer multifilament. I may have finally found a replacement for
Comments: This is the only poly that I have been able to play without having to hybrid with a softer multifilament. I
strung it up @ 55lbs. in my new YOUTEK Radical last week. I've been really pleased with it's performance so far.
Comments: I think this string is great! I used it with my head prestige pro microgel and together it was amazing. I
think that this string gives great spin without losing power. Usually string lasts about 8 hours for me and this lasted about 25 and
I couldn't tell!
Comments: Just had this string put in last week into my MG Prestige Pro as I was having some elbow problems with
the Big Banger ALU power, sign of getting older! This String feels fine and am pretty happy with it at this stage. Can't really tell a
lot of difference in the playability with the BB and so far the elbow is ok!
Comments: This is a great string. I put it on my Microgel Extreme and it created a lot of spin. The only drawback is
that it doesn't have very much feel. That is quite bad for me because I tend to use drop volleys a lot. I will try it with Prince
Synthetic Gut w/Duraflex in the crosses for a bit more feel. Over all a 6 out of ten!
Comments: Great string... I put it on my Microgel Extreme and it created a lot of spin.
Only drawback is that it doesn't have very much feel. Which is quite bad for me because I tend to use those drop volleys a lot. I will
try it with maybe prince synthetic gut w/duraflex in the crosses for a bit more feel. Over all a 6 out of ten!
Comments: Actually thought I would hate such a stiff string, but it hits great. The one drawback that I found is that
there is a period of time when the string just goes dead. There is a big difference when they do. It will feel like you are hitting with
a ping pong paddle. For 17g it doesn't break very easily. I am a 4.0 player and a stinger. I hit a lot of power off both sides.
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