The concept itself, we are the first and (as of today the only ones) able to produce huge bass and devastating energy in the room with a dipole/baffleless architecture. Design is a factor, crossover another pillar, vibration control and many other points. Every mm2 in the speaker is discussed to the bone always for improvements. Our aim is a formula 1 car no other point than performance, design and crafting.

We have distributors and dealers in some countries already and we are evaluating new ones. Being IO Design dealer/distributor is a mission because you are not selling normal hi-end loudspeakers but truly F1 devices. The network will hopefully grow, in the meanwhile, where we don't have dealers, we manage the customers directly or, even better, we ask the Customer to put his dealer in contact with us to make him safe and easy. 

If a Customer needs setup advise, we follow up analyzing also the acoustics if needed. Should any tech issue happen, we would support the dealer with parts and repair advise or we would ship back the units for check and fixing.

It depends from system to system and ambient to ambient. We always choose the more extreme quality tracks to show the true potential of the speakers because it's way above the current competition. Usually we prefer tracks where bass is very evident because it is a strong point (even if it might seem counter intuitive for a baffleless design). Also high transients, because the energy the speakers pushes in the room is much higher than anything else on the market.

Any high quality amplification works, digital, tubes, solid state. The important is that the amp has control and current, watts are not so important, even 40-60 can do but the quality of the amp need to be xcellent to get profit of the shocking realism of IO Design speakers. Ypsilon Electronics is well tested for instance. Tubes also perform well, however they are usually a bit more euphonic on bass and they have more distortion; this is a pity because IO Design speakers are so clean and distortion free... In normal boxed speakers you don't notice, because those speakers are themselves distorting music with the box compressions...

Marten uses high quality drivers that are custom to our models often in exotic materials like diamond, beryllium, ceramics and aluminium. Marten is one of very fiev manufactures that is implementing first order crossover filters. This we do in all models in the Mingus and Coltrane range.

Initially customers are advised to contact the dealer they bought their speakers from, when support is needed, if they have bought speakers second hand it's recommended to to contact the appointed distributor. Of course customers are also welcome to contact Marten directly via our info email and get support that way. We value customer support highly and help our dealers and distributors to take care of customers if something has happened. Customers should never ever hesitate to contact us or our partners.

We have many but here are three of our test tracks, St James Infirmary (live edition) Angela Brown, Someday you'll be sorry Harry Connick Jr, V. Panis angelicus (Soprano) Ensemble vocal de Lausanne.

We do a lot of testing and development on brands like Halcro, Audiaflight, MSB and CH-precision. But we also know that customers use Gryphon, Goldmund, Soulution and Esoteric among many other brands in their home systems.