Master Series Invasion Silicone Sound Set — Test & Review

   Jeffrey Carpenter
Feb 29, 2024


Jeffrey Carpenter
: 32
: Advanced
: Male
: Straight
: Lovense Calor

  • Are a beginner looking to try sounding but glass and steel are intimidating
  • Have experience in this kink and want to stretch to the next size up
  • Looking for a sound that is more discrete than glass or steel

  • Want to sound for long periods of time - get steel/glass instead
  • Are an advanced user and need something larger than 10mm or longer than 23cm
  • Don't like the color blue (what's wrong with you??)

Looking to start sounding but steel and glass rods too intimidating? Silicone might be the introduction you are looking for. Just over 8 inches in length and very flexible, each of these rods can help expand your boundaries. Or perhaps you need a material that is more forgiving when pushing to the next size up, in which case, these sounds will definitely fit the bill. Specs 3 blue silicone urethral rods (about 20 SHORE A hardness) Diameters: Smallest rod: 5mm/6mm (15fr/18fr) Middle rod: 7mm/8mm (21fr/24fr) Largest rod: 9mm/10mm (27fr/30fr) Length: 8.25in/22.75cm

Master Series Invasion Silicone Urethral Sound Trainer Set -

Simple, elegant, and unassuming, silicone sounds to the untrained eye resemble nothing more than rubber noodles. But for those more informed and sexually aware these innocent noodles offer a unique and exciting experience on paths rarely trod. Mine arrived in the mail a few days ago and, after a hasty but thorough preparation, I held my tube of sterile lubricant in one hand and the smallest of the three rods in the other. I applied a generous coating and lined up the tip. After a nervous breath I began the plunge, watching mesmerized as inch after inch slowly disappeared inside of me. Half way through the size increased, I felt the sudden expansion, and I gasped only pausing for a second. New sensations arrived unbeckoned as end reached deeper. All too soon the sound reached its limits. I paused to take in the sensations. I wanted more. I had two more sizes to play with. As I withdrew the first and smallest sound I felt a sense of emptiness. I quickly lubed up the second larger sound and began the plunge again.

Master Series Invasion Silicone Urethral Sound Trainer Set -

The Master Series Invasion Silicone Urethral Sounds come in a set of three different size sounds. I like that there is a nice size variation, allowing for a gentle increase in stretch as you progress through the sizes. Each one also increases in diameter around the halfway mark, which is great for warming up and keeps things exciting as you move the sound deeper. They come in a bright blue color.

Master Series Invasion Silicone Urethral Sound Trainer Set -

A cardinal rule for any urethral play is the meticulous cleaning of the instrument, both before and after use. Proper lubrication is equally crucial to ensure a comfortable session. The initial insertion of the silicone rod is a notable experience and should be approached at a pace you're comfortable with. It's important to note that silicone, despite its many benefits, does create more friction compared to steel. For first-timers, I recommend a cautious approach, limiting initial usage to no more than five minutes. Overextension can result in a temporary burning or stinging sensation during urination, a sign of irritation rather than infection. This discomfort typically subsides substantially within two hours and resolves completely within 12 hours.

Master Series Invasion Silicone Urethral Sound Trainer Set -

This set of sounds are crafted from premium, phthalate-free and non-porous silicone making them easy to wash and care for. There are no seams from the injection/casting process and are not hollow or fragile.

Master Series Invasion Silicone Urethral Sound Trainer Set - <

In the world of sex toys you get what you pay for. These are not the cheapest sounds in their category and the quality shows. These are well worth what they cost.

Master Series Invasion Silicone Urethral Sound Trainer Set -

I am personally a fan of steel sounds and have quite a collection so, when I saw there was a silicone option by a brand I respect, I needed to try it out. I was not disappointed. What makes steel sounds so great is their low friction allowing longer play sessions without causing irritation. Steel’s downside is its rigidity – a straight rod down a curving path can only go so far without risking damage to the path. Enter Master Series’ Invasion Silicone set. These soft rods are made of quality silicone with no deformities. Silicone is innately poreless (body-safe) meaning it is easy to clean and does not harbor bacteria after a thorough washing with antibacterial soap and warm water.

Master Series Invasion Silicone Urethral Sound Trainer Set -

The sounds come well-presented showing their full lengths and widths in a vertical clear sheath and backed by reflective aluminum easily catching the eye. The Master Series logo is emblazoned across the top - a statement piece of pride in their product. turning to the back leaves no question as to the silicone rods' use with a perfect product demonstration captured in one image, durability in the second, and product specifications absorbing the rest of the space.

Master Series Invasion Silicone Urethral Sound Trainer Set -

A cardinal rule for any urethral play is the meticulous cleaning of the instrument, both before and after use. Proper lubrication is equally crucial to ensure a comfortable session. The initial insertion of the silicone rod is a notable experience and should be approached at a pace you're comfortable with. It's important to note that silicone, in spite of its many benefits, does create more friction compared to steel. For first-timers, I recommend a cautious approach, limiting initial usage to no more than five minutes. Overextension can result in a temporary burning or stinging sensation during urination, a sign of irritation rather than infection. This discomfort typically subsides substantially within two hours and resolves completely within 12 hours. If you have any fears or doubts you can always drink cranberry juice to kill any potential infection.

Length8 inches
Insertable length7 inches
Diameter5 - 10 inches
WaterproofYes
MaterialsPremium Phthalate-free Silicone
Storage Bag IncludedNo

Master Series Invasion Silicone Urethral Sound Trainer Set -

  • High-quality body-safe silicone
  • Easy to clean
  • Discrete
  • Trusted brand
  • Safer than steel

  • Limited usage time per session
  • The irritation can scare people new to sounding
  • No flange to prevent them from going too deep

Perfect for beginners looking to test the waters of a new play style safely. The high-quality silicone is easy to clean and use while accommodating a wide range of sizes (5mm - 10mm diameter). While the friction of silicone keeps the use-time low without irritation, the trade off of safety for beginners and a gentle stretch for the more advanced makes these rods a must-have in any sounding kit.

Wash the sounds thoroughly with antibacterial soap/specialized toy cleaner and warm water. Once washed do not let the sounds rest on any unsensitized surface – it may be easier just to wash and use one at a time as you can just hold it. Apply sterile water-based lube to the sound. At your own pace insert the sound into your urethra pausing as often as you need to. Do not insert the entire sound, always be able to pull it back out as you do not want it to get lost or stuck. Stop sounding if it starts to hurt – it may not hurt much but you will feel it when you urinate and you can always go again later. After your session wash the sounds thoroughly as you did before starting. Lastly try to urinate to clean out your urethra.

Mostly yes - as the silicone is flexible it is difficult to hurt yourself with them. Silicone causes more friction than steel so session time is limited. Do not insert them deeper than you can pull them out!

Yes! The silicone is non-porous so as not to hold on to bacteria after being washed with antibacterial soap and warm water. Do not use scented soaps to avoid irritation/infection.

I recommend Surgilube as it is sterile and water-based. Do not use silicone-based lube as it will destroy the toy.