SM Pro iNano - Passive Volume Control Review
If you want any audio signal to be attenuated, whether it be an Active Monitor, mp3 player, or even a microphone signal - this product will do this in a simple and all-passive package.
Personally, I am using the iNano to control the volume of my active speakers. Previously, I've been using a Mixer, which had too many features that weren't utilized and also the volume knob was small.
Features
So basically this unit has balanced inputs and outputs and 3.5mm stereo input and output which can be used concurrently. For me, that meant I could hook up the monitors and a headphone amp. It also features a large volume knob and a mute button.
Sound
There were no noticeable differences in sound quality as compared to when it was connected to the mixer. Apparently, the previous design (M-Patch 1) had limited the bandwidth, reduced the sound stage, etc; however this iNano is based off the M-Patch 2 which has gotten fairly positive reviews.
Quality
The unit is made with a metal chassis, and plastic inputs and outputs. Feels pretty solid, and the volume knob is smooth.
Price
Retails for $69US/$89AU, but purchased for $69AU (~$50US).
Conclusion
The iNano is a simple passive volume control system, that is compact, cheap and does its job well.
If you have any questions about this, please post it.