Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How to adjust bass and treble?
Document: I do also recommend getting a wiring harness for your specific vehicle, because it'll save A LOT of time if you dont have to do the wiring. On to the deck itself, I really like it, I'm a very picky person when it comes to sound quality and this deck performs. The sound is great, the preset EQ's are great, and you can have 2 custom presets, and a graphic EQ that allows allows you to touch slightly on different bass and treble frequencies.
If you live inside a large city and are close to the radio stations you might enjoy HD radio, but for those of you who live in suburbs or you are far from the radio stations FM HD Radio is probably not for you.Sound quality: I have finally decided this unit out performs my old Pioneer in sound quality. One of the custom features you can set and adjust that makes this possible is the ability to filter low bass frequencies from your 4 regular speakers.
5 channel eq makes it so you can really personalize your sound (just wish the low was lower than 100hz, bass boost kind of makes up for that though) and if you have no idea what to do with an eq you can look through the presets for your kind of music. Installation was a breeze.
I love the stereo. I just put it into a stock intrepid and it sounds incredible. I am going to upgrade the speakers soon as well with some Pioneer speakers and it should really help the bass and clarity at higher levels. I love the remote and that it has 18 presets. The HD sounds great and comes in most of the time in cities. It looks great as well.
Lot's of nice features but what a pain to use. The volume knob does everything and it's very awkward to use. You have to push, twist, rock right or left and go thru lots of menus to make any kind of change. It's also rescessed and hard to get a hold of. I would have to pull the car over to make a change in the bass setting. I'm sending this one back.
Sound quality is at least as good as the Pioneer that came with my Scion tC, after adjusting the equalizer and bass boost settings. I mostly use the iPod connection of this stereo. The tuner sounds good too. The multi-control wheel is a bit hard to use, especially while driving; occasionally I'll push the control the wrong way. Wish it had a rubber edge for easier grip. Also, would be nice if more labels on the faceplate were lit.
this headunit is awesome, didnt go wrong at all, i wanted a new headunit with the standard equipment etc..and one with usb for my phone etc, this headunit is just great, period
pretty awesome, great value w/hd radio and the ipod controls are very convienient with a search button and option to control w/ your ipod itself
i bought this readiogood:sounds goodITUNES WORKS WITH ALL IPOD AND IPHONE 4 AND IPODSHD (EVEN THOUGH HARD TO KNOW WHEN YOU ARE ON HD)AUX IN THE FRONTUSB IN THE FRONTREMOTE CONTROLbad:They said it has bluetooth (but you need a part for it -_-)NOT USER FRIENDLY &lt; MENUS ARE HARD TO USE)BOTTON ARE HARDSMALL LCD
for the most part this stereo is a great stereo, but when it comes down to the sound quality it cuts in and out of hd radio and causes it to get louder and quiter all the time and makes the song jump around also. it will do for now until i can replace it.
Answer: Hey david I have the same unit. What you have to do is go to audio and find the hz. Turn the volume up as loud as you normally listen to and one at a time go threw the Hz adjustments. If you would like I can go out to my car and check which settings i have but i also have an amp and subwoofers hooked up. It does not have the simple bass and treble adjustments like factory stereo. This way is more presice and does increment small adjustments to your specific speakers and vehicle. Let me know if it helped!