I have been trying to use the 2600...using a Roland GR-1 guitar synth and GK2a ... and a soundblaster Extigy ..so far the Latency is so slow it makes the 2600 TOTALLY UNUSABLE even with ASIO Direct X full duplex driver on an AMD1400 Athlon, 7200RPM hard drive, 256Mb RAM on a clean install of XP pro . Even using Cakewalks TTS Virtual Piano there is way too much delay between input and the 2600 responsing..I will be testing more with a Roland SI-24 Asio driver, within Cubase VST 5.1 and using a Roland MIDI Keyboard and GI-10 guitar to midi convertor and if I can't get it faster, will be selling the 2600v and ALL my arturia products .. anyoen else having the same problems?