Sonico - you can set the latency to 2ms on the Focusrite Scarlett 18i6 - which is like zero latency for recording.
FWIW, That 2m is just for the ASIO output buffer.
If you're monitoring thru software, round-trip latency is the sum of the following:
- ASIO input buffer
- ASIO output buffer
- Latency of the A/D and D/A converters
- The driver's hidden safety-buffer
The unit's round-trip latency is thus significantly higher than 2ms.
About the best you'll find (from any unit) is ~5ms total round-trip latency at a 64-sample ASIO buffer size/44.1k
The Focusrite's forte' is quality of sound for the $
If you're looking for the lowest possible round-trip latency, there are units that go lower (RME, MOTU, Presonus VSL to name a few).