Instruction: Answer the given question using the supporting document.

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Question: how to adjust volume?
Document: This machine is the best we ever had. We never listen to the radio any more and it will play as long as you want it to. Never had a single problem. You can also controle the volume from the remote. We also have a new Sony turn table that sounds very much like a cd player. My son first heard it and asked me when I got the new cd. I won't even look at anything that is not Sony.
we havent  used it that much  yet  but it seems  very advanced  and  it certainly has many  options  for  playing and programing  I  would  think you couldnt  find  much better for a mutiple cd player  we expect to  have  lots of good use out of it . IT  has capabilities  of programing  tracks you want from 5 cds  or  just shuffel  playing. would recommend  buying to anyone
so i use the little optical cable, which is accurate but likely lacks the separation and good old sound of multi-channel analogue. but i digress...5 discs is a must, after the exhausting opening of CD cases. if they haven't changed it after all these years, it ain't broken.crazy reliable!
i was perusing the SACD market place, and was surprised in a good way to see this unit still around. i checked the model number on mine, the same. front appears identical too.but mine is 6 or 7 years old. never misses, and it runs often 12 plus hours a day.has 6 RC cable out puts on back (for front L/R, centre, sub, surround L/R.
You'll like it and you'll really like the sound it produces for you.
While you can't beat the price for this SACD/CD player, it is lacking some features that I had come to expect. Unlike my previous cd changer the remote on this SONY does not have an on/off  button, a tray open/close button or numerical keypad for track selection. These are grievous omissions, I think and should be corrected by SONY on future remotes.
When we first tried it with an old favorite CD, we were stunned by the better sound reproduction on a disk we were very familiar with. "How can it get any better?" THEN we played an SACD (using the 5 RCA cables hook-up) - wow. The detail and distinct sound reproduction is amazing, from Dylan or Elton to classical pipe organ (try the "Messiah" in SACD!)
When conventional CDs became available they displaced LPs in the marketplace because of their small size and the fact that their sound did not degrade with the ticks and pops that even the best-maintained LPs eventually acquire. But, despite these advantages -- as well as significant improvements in CD sound over time, with technological advances such as oversampling -- many connoisseurs maintained that CDs never achieved the warmth and high-frequency sweetness characteristic of top-grade audiophile LPs. Now that has changed.
What a piece of such-and-such.
Well, except for the couple SACDs I already opened- I'm stuck with those. A real shame. A real waste of money and time. Considering Sony has had their SACD site basically shut down for months, looks like this superior format never will take off anyway. If you're looking to enjoy the SACD titles that are available, definitely do not buy this unit. There's a good chance it won't work. It sounded great for about a dozen hours.
Answer: The receiver that the CD player is attached to is how you adjust the volume, just as you would adjust the receivers volume,when the receiver is switched to (play) CD, the receiver adjusts the volume for the CD player.  Hope this helps.