Nah, not teasing.
You're such a tease.
hopper, check out page 41 of your owner's manual. If you can't find it, you can download it from Denon at the link
here (you'll need to enter your model number).
I googled "Denon 1610 Manual", scanned the results, and clicked on one that looked likely (the Denon site... D'oh!) I opened the manual and, after looking for "tone controls" in the TOC, I found the answer, in black and white, it on page 41. It took all of about two minutes.
I was about to post it, then it hit me...
Waidaminnit... Hoccum these days some, not all, people come here with the slightest silly problem without even trying to find the answer themselves? Is it laziness, or simply the lack of problem solving skills? How would they have survived in "the old days" before the internet where one had to actually think for themselves and research problems without whining on the internet and expecting others to do their legwork and thinking for them?
Again, I don't mind helping and answering questions. I actually like it. That's why I'm here but sometinmes, just sometimes, I think some people abuse the kindness shown here.
In either case, from this guy's last two posts with stupid questions, I'm not too sure he's not a troll.