The video below from Bosch shows the ProSilence in action. It shows the AdvancedRotak with ProSilence at different distances and compares it to a mower (Rotak 43) without ProSilence. This should clearly show the benefits of the feature.

The Advanced Rotak 750 is a 1700 W corded lawnmower that's new design allows for a high-quality finish. Sharp blades cleanly cut the grass. Dull blades roughly tears the grass which will quikly turn brown. If the lawn mower produces teared grass, then the blades should be sharpened or replaced. The Bosch AdvancedRotak 750 is a great all round mower that is designed for the maintenance of medium-to-large sized lawns. Features that help make mowing your lawn easier – ProSilence, ErgoSlide, LeafCollect, ErgoFlex and Integrated Height AdjustmentIt is essential that your lawn mower is highly adjustable to accommodate different lawn types as well as to accommodate for the different seasons. The Bosch AdvancedRotak 650 gives you a choice of 7 settings ranging from 25mm to 80mm on the front and rear wheels. Wow! 7 height adjustments! This really is impressive as some mowers I have tested only have 3, so no matter what type of lawn you have or what your seasonal requirements are, this mower will be perfectly adjustable for your needs. The best months for lawn mowing are March to October. Mowing should be done once or twice a week depending on how fast the grass grows. The best time of day to mow the grass is at the end of the afternoon and never in full sunlight. This is to prevent the grass from drying out after being cut. Because the grass collection box folds flat there are two fold-able arms near the box opening, when emptying the cuttings these slightly obstructs and restricts the flow of the cuttings when emptying. Also, because the Bosch 650 does such a good job of compacting the cuttings a good shake of the collection box is needed to eject all the cuttings. The material is more prone to damage from tearing when in use, however, the material is good quality and if looked after should not be an issue.

Can you please let us know what issues you have had, what goes wrong and where do they break. This is not my experience of the Bosch mowers so it would be good to know some specifics.

These innovative features are there to serve a purpose. For example, the lower noise levels (ProSilence), easy to adjust cutting heights (single central button), ability to collect leaves (LeafCollect) make this the ideal machine for people who don’t have a lot of time or who do not want a complicated bit of kit that requires an engineering degree to understand. This corded lawnmower offers exceptional results with very quiet and convenient mowing. The ProSilence feature reduces the sound omitted by up to 75% and also filters out unpleasant noise through its acoustically enhanced design features. The AdvancedRotak height adjustment has one simple button to choose one of seven cutting levels ranging from 25 mm to 80 mm, so the mowing can start right away. Apart from mowing, the LeafCollect blade cuts grass and can be used to collect leaves. To learn more about the benefits of a mower that has the ability to mulch the lawn, please see my article “ The Benefits of Mulching Grass – Complete Guide with Pros & Cons“. If there is anything to get excited about with this mower, the grass collection box has to be it. Not only can it hold up to 50 litres of grass clippings, but it will also fold flat for much easier storage. In all the mowers I have tested I do prefer these hybrid grass collection boxes with the cloth sides (for better air circulation) and solid top and base (for enhanced durability). As mentioned above this allows the box the ability to fold flat.