I love the iHP-120 but it's often safer not to use the remote for recording. See the following copied form the iRiver FAQ:
[170] Does using the remote introduce interference?
If recording analog-in, yes. It seems on most units that having the remote plugged in during recording does introduce a ticking noise, which is only really noticeable when amplified. For example, with no gain the extra noise is about 3dB. So if you're using an external pre the issue is moot. However if using the iriver's pre at quiet gigs for a lot of gain (eg about 30dB), you may notice the extra noise.
I find the remote isn't necessary for stealth anyway due to the safety clip feature. No need to monitor the levels when safety clip is turned on because it will back off the levels automatically whenever clipping is about to occur. For a loud show, many people just set the iRiver gain to around +15, turn on the hold, put the machine in their pocket, and let the safety clip do its thing finding the proper level. Of course with experience you may want to pick a different starting gain setting depending on the sensitivity of your mic and how loud you anticipate the show will be.
I've just started using an iHP-120 for some of my recordings and in the couple I've done where safety clip automatically reduced the gain, I did not hear any clipping nor any obvious drop in volume when it kicked in.