While using the same hardware platform, the nanoAVR-DL and nanoAVR-HD have very different philosophies. It really depend on what you’re after and the following will try to highlight theirs PROs & CONs:
- nanoAVR HD: A manual tuning process. To make any meaningful tuning, you’ll need to use a software (e.g. REW) and learn to tune a room. The good news is that we do have some great app notes! Great Bass management configuration capabilities and nothing like the auto/limited tuning you find in a consumer AVR. In terms of flexibility, nanoAVR HD wins hands down on the level of flexibility our DSP blocks provide.

- nanoAVR DL: An automatic tuning process. You do need to get involved in the measurement process (i.e. moving the microphone around the room) but once that step done, you can let Dirac Calibration Tools do its "Magic". A much easier process leading to much better results knowing the type of filter calculations and DSP algorithms used inside (FIR + IIR). Reaching the same level of quality with a nanoAVR HD won’t be easy for someone that is new to Acoustic measurement, if not in some case impossible (i.e. IIR can't fix impulse response). Worth knowing that reaching the same price point for an 8channel Dirac live DSP would also be very hard if not impossible! nanoAVR DL is the lowest cost multichannel Dirac 7.1 implementation. Period. :-)