Jaspers 4R-150B

I use Jaspers 4R-150B for housing all my current home studio. In the lower rack lies a 28kg Korg Triton Extreme 88. In the rest racks lie four sound modules, a mixing desk, Midisport 4x4, a 21" monitor, a laptop and a Mininova leaving enough space for even more.

The stand is unbelievable light and rolls on its wheels with no difficulty even when loaded. It is also very stable.
Assembling is easy and quick and doesn't take more than 10 minutes. Mind though that you should spend some 15 minutes more before you do it in order to be sure that you assemble it right and as your needs impose. Expect no help from a manual or from Jaspers website. In the box there is only a generic photo and a couple of words that don't give any serious hint.

The holder stoppers are lame. They are from plastic (why Jaspers?) and although they can be easily replaced there are no spares in the box you receive. Two of them came to me broken and Thomann has no stock of them so they have to call Jaspers. You will receive some spare adhesive felts which will come handy sooner or late since there not of the highest quality. Two of mine came damaged.

Pros:
Lightweight, easy assembly, sturdy, good quality wheels

Cons:
Plastic (!) stoppers, a bit pricey, no assembly instructions

In general I think you won't regret buying it although a few minor changes would make it even better.

In the link below you can find a very interesting article of Keyboard magazine and also some assembly help:

http://www.keyboardmag.com/accessories/1187/jaspers-keyboard-stands-the-solution-for-stacking/29460

Used for two keyboards and desktop computer with large screen. The coresponding "studio" furniture is very expensive even to think about.
Top self was put in the back and with the third they support a self (from IKEA or other) and the other two support two keyboards. A small laptop table can be used for pc-keyboard or a use dedicated part. It solved the computer problem which requires a piece of furniture or a table with min cost. The pc has software instruments which can be synchronized with keyboards in an integral way. Nice for home studio. One disadvantage. It is large as it can handle 88-note keyboards and needs a whole wall to stand against at not too much footprint. But it makes sense to do it. Most configurations can be obtained with such a flexible equipment. The size depends on the keyboards though. Perfect ergonomy: Height and position of keyboards, height of computer screen, height of speakers (independent stand but fit inside). Sturdy. Wheels are removing anxiety in a minute with the whole build going back and forth with a finger. 10/10

This was a solid stand for me for 3 years, top manufacturing and flexibility. I have been very happy with the investment in this model! But, I would encourage everyone to inspect and retighten everything on your rack, once or twice a year. Recently I rearranged my stand and shifted some gear across the bars and changed the height of the middle two racks, and after having been stable for the preceding 20 hours, something happened while I wasn't present in the room. Something either slowly slipped down and shifted or a Tube Clamp Joint failed, and my stand tipped forward onto the hardwood floor, dumping all my gear with a few unfortunate but repairable casualties. Inspecting afterwards, a fiber-reinforced Tube Clamp Joint was found to fractured/broken, but I can't say if it just failed (unlikely) or if it was broken by the force of the stand hitting the floor (more likely due to the torque & impact). Previously, I had inspected the center of gravity while I was loading my gear onto the rack, and the lowest shelf had a similar amount of weight on it (~30kg) as it had for the previous 3 years, and it had been stable for the preceding 20 hours, so it's a mystery. I have ordered some additional Jaspers stand parts to replace the damaged Tube Clamp Joint, and provide some additional cross bracing and redundancy for potential future slipping. But all in all, I have been super happy with this stand! :)