Presonus Quantum HD2

I have waited some months before writing this review. I will only describe what I personally think of the HD 2 because details and instructions can be found on the internet.

Out of the box the Presonus Quantum HD 2 is basically a 2 in 4 out audio interface but has lots of routing and expansion possibilities. All in and out features are high quality and this audio interface realy sounds good. Also the single headphone output sounds very good and will be loud enough for any situation. The display is very nice, clear and informative. Universal Control provides a mixer with all routing you can wish for. It is well laid out and easy to use. Presets can be stored as Scenes. The "One Knob Approach" works very good since there are only 2 physicall inputs.

I am a guitarist and absolutely love the 2 instrument inputs. They realy sounds better than other audio interfaces I have owned. There are also 2 additional instrument outputs which can be connected to guitar amps or FX pedals for Reamping. I tried them and it worked perfectly.

For me the drivers and low latency are important. Taken in account that this is a USB device the latency is very good. With a buffer size of 128 at 48Khz the round trip latency is about 7 ms. With a buffer size of 64 it is about 5 ms. Both buffer sizes will work very good while monitoring a guitar through an amp sim. Also I have to mention that these drivers are absolutely rock solid for me. Not a single glitch in 4 months of use.

Presonus support was very kind answering some pre sales questions. I found them very friendly and responsive. The choice was between the ES 4 (which is more the desktop version) and the HD 2. Since I never use more than 2 inputs simultaneously I chose the HD 2 and do not regret that choice. I prefer the layout of the HD 2 over the ES 4.

I think this audio interface is a thing of beauty and art in all aspects and I can only highly recommend it.