DP 4000 is an amazing pump. You will be stoked at how quickly you will grow. I used to pump a few years ago and decided to get back into it. Glad I made this move and went with this great pump. Easy to set up on my windows laptop so you'll be pumping in no time at all. The pump and cylinder holds pressure well and is very stimulating to your junk. You'll be huge in no time. Im already ordering the next size up in cylinder and I've only been at it two weeks....

"Stallion Cock" Cushion - well-named! "Stallion Cock" Cushion!!! - well-named! Morning Pump was great! I went through my two smaller cylinders...the first in less than two minutes and then 30 minutes in the 2 1/8 tube and the final 30 minutes in the 2 3/8 tube! I was packing the 2 1/8 about 60% when I went into the large tube. At the end of the 30 minutes, I was packing the bottom 2 inches and just having an enjoyable pump. I came out of the tube uniformly thick and decided to give the Cock Cushion another try. I had to use the "E" cushion, because I just was worried about putting one of the more resistant cushions on for the first time. It was a bit tricky, but I was able to get the Cock Cushion on and moved it down to the base of my shaft. I was really thick and was concerned about constricting my shaft like that...so I kept watch on how things were looking and feeling. The look was amazing. They call these "Stallion Cock Cushions" and after coming out of my 2 3/8 tube and getting this on, I can see why it's call a "Stallion Cock" Cushion. I still have the Cock Cushion on and a very noticeable bulge with a 6.5 inch flaccid girth! I am certainly still maintaining a lot of the engorgement and length from my pump with this on. Right now I have been wearing the Cushion for over 6 hours and all is good. Still hanging thick and long. I'm impressed. I'm watching and making sure temperature is not cool and everything looks good. If it stays good, I may try to wear it until I pump again tonight...but maybe not, that's 4 hours away. Bottom line is I'm loving the progress I'm making with the DP4000. The tubes I got from CTC are great and so is the Long Rider Lube I'm using. Very happy with my new pumping experience. The Stallion Cock Cushion is just well-named and adding a new dimension to maintaining the girth, hopefully from my morning session to my evening session. That would definitely give me a head start on my evening pump! Maybe a way to progress quicker into my larger cylinders!...

Stallion Cock Cushion!!! Morning Pump was great! I went through my two smaller cylinders...the first in less than two minutes and then 30 minutes in the 2 1/8 tube and the final 30 minutes in the 2 3/8 tube! I was packing the 2 1/8 about 60% when I went into the large tube. At the end of the 30 minutes, I was packing the bottom 2 inches and just having an enjoyable pump. I came out of the tube uniformly thick and decided to give the Cock Cushion another try. I had to use the "E" cushion, because I just was worried about putting one of the more resistant cushions on for the first time. It was a bit tricky, but I was able to get the Cock Cushion on and moved it down to the base of my shaft. I was really thick and was concerned about constricting my shaft like that...so I kept watch on how things were looking and feeling. The look was amazing. They call these "Stallion Cock Cushions" and after coming out of my 2 3/8 tube and getting this on, I can see why it's call a "Stallion Cock Cushion." I still have the Cock Cushion on and a very noticeable bulge with a 6.5 inch flaccid girth! I am certainly still maintaining a lot of the engorgement and length from my pump with this on. Right now I have been wearing the Cushion for 6 hours and all is good. Still hanging thick and long. I'm impressed. I'm watching and making sure temperature is not cool and everything looks good. If it stays good, I may try to wear it until I pump again tonight...but maybe not, that's 4 hours away. Bottom line is I'm loving the progress I'm making with the DP4000. The tubes I got from CTC are great and so is the Long Rider Lube I'm using. Very happy with my new pumping experience. The "Stallion Cock" Cushion is just well-named and adding a new dimension to maintaining the girth, hopefully from my morning session to my evening session. That would definitely give me a head start on my evening pump! Maybe a way to progress quicker into my larger cylinders!...

Best PE purchase I’ve ever made! I’ve been doing PE for over 7 years but only learned about the CTC DP4000 a few months ago. I am both happy and bummed out. Bummed out because I could have been using this great little pump for the past 7 years instead of going through four Bathmates. The Bathmate is essentially an uncontrolled pump, especially when compared to the DP4000. My Bathmate experience was not good. I had blotchy discoloration of my shaft on most occasions. I also found myself sidelined with blood blisters. Not a pleasant experience. Because I had achieved some nice girth and length gains through my PE manual work and a lot of clamping, I kept wanting to pump to finally get to my goal of six inches of girth along my entire shaft. Bathmate was not the answer. After purchasing my fourth Bathmate a few months ago, I discovered a few posts on PEGym about the CTC DP4000. I began doing more research at Matters of Size and Thunder’s Place. The more I read about the DP4000, the more interested I became. Because I still had some questions, I decided to call CTC and found myself on the phone with Chris. He answered all my questions patiently. It was obvious he knew a great deal about pumping and the DP4000. I was sold and placed an order. I am so happy I did! My DP4000 arrived within a few days and I began getting conditioned to a new way of pumping. I was amazed. Using the DP4000 felt great and was easy and fun. I was using the preloaded program only, but I was able to pump for 15 or 20 minutes with no issues. I had no bruising, no blisters, and no other problems. I was just having fun. People talked about the noise of the DP4000. It does intermittently hum along, but when wrapped in a soft blanket, it’s quiet enough for me to do this without my wife knowing I’m pumping in the next room. That was important for me. I also travel and this little pump will be traveling right along with me. I’ve been pumping with my DP4000 for over six weeks. In the beginning I was limited to the preloaded program. I was so impressed and happy with this pump that I figured out how to get Windows loaded on my Mac so I could come up with my own programs. I’m reasonably bright, but really illiterate when it comes to Windows. Fortunately, I shared that with Chris at CTC. He told me to call him when I had time and he would walk me through setting this up. He helped my understand my way around my new Windows parallel program and taught me how to program the DP4000. I was amazed at his kindness and patience doing that. I kept messing up and we would have to start over again. He never lost his patience with me. He’d kind of laugh and we’d keep on working through it. I am sure he spent well over an hour doing that with me. Now I’m a pro…well almost. The safety of the DP4000 is what I find very compelling. I have worked my way into longer sessions, alway making sure things feel and look good through my cylinder. I got into heavy clamping over the years and have done c...

I bought the DP-4000 in 2007... eight years ago ! It gave me great satisfaction during these eight last years (with the software included runing under Windows XP). Past month I changed my computer and moved to Windows 7. Great great problem : the old software was not recognizing the USB port where the DP-4000 was connected. With Chris advice, I uninstalled the old version of the software, downloaded the new software, installed it on my new computer, and... ALL IS FINE ! Very great material and very great software for VERY GREAT MOMENTS OF PUMPING ! Thanks Chris, thanks CTC ! (Review from an old frenchy!)...

Dr. J. Nelson / Oklahoma 11-19-2013 To CTC: In regarding the DP-4000 Maximizer, I can only give positive reviews and feelings towards this device. I believe that the CTC Company has maximized and surpassed current and future technology in the creation of this device. Also, I believe that the CTC Company has taken male enhancement enlargement to it's full potential via vacuum therapy in utilizing this digital technology. With the incorporation of using digital technology; is a milestone breakthrough in this technology. I cannot see how this technology could be improved, nor surpassed. This device is the “Rolls Royce”, “Hands Free”...and true “Auto-Pilot” of vacuum technology...a technology where we are now today. If any improvements are made to the DP-4000, it will only make this device even more user friendly than it currently is. I also believe the DP-4000 is far superior to current and classic vacuum pumps; and in utilizing digital technology makes the DP-4000 Maximizer totally novel. The device is very easy and user friendly. It is a well crafted device of solid state technology. I have not found any physical flaws or software glitches associated with this device. It is also small, discreet, portable yet also remarkably powerful and low noise emitting. In conclusion: It is well known and established that vacuum therapy is very safe and effective for treating various problems associated with E.D.; likewise also for generating permanent growth and enhancement. Surgery may be an option, but the risk factors vastly outweighs any potential benefits. This device I believe is the best on the market for both with no risk when used properly. The minimal cost of this device compounded against it's potential benefits certainly is a wise investment. Any adult male young or old will see remarkable results no matter what their purpose for purchasing this device may be. Respectfully: Dr. J. Nelson / Oklahoma * Document valid only if signed above and embossed in this area * NOTE: Original signed paper copy of this testimonial is kept on file at the CTC Company's records dept. Product reviewer's full name / address and telephone number have been ommitted in this electronic testimonial with respects to matters of online privacy....

Hello! Now DP-4000 supplied. I have now learned how it works. I have now replaced my old pump XL-2000 Super Maximizer. DP-4000 works very well and easy to set up. Very pleased with the products I purchased from you. Many thanks for a great product....

The DP-4000 was bought after reading the reviews on the internet. Before this I was using the XL-2000. I totally agree on all the reviews, I am using the DP-4000 with the software running on my netbook. This gives you ultimate freedom around the house. I recommend this pump to everyone, it even came with the right adapter for my country. (NL)...