Need DA convert


I need advise on DA converter. I just brought Proceed CDP 3. My friend told me to buy DA converter. I do not know much about DA converter from digital to analog. Any explaination and advise to buy DA converter. My system has ML 23 and 28 and Wilson audio 3.2. Their sounds are great and I do not know what to say about. I also used sony sacd 555es for sacd but sound is bright and not much bass. Any idea is for sacd.
sanjose_audio_guy
For Red Book CD nothing I've heard at three times its price, or even more, can beat the Apogee Electronics DA1000-E reference 20 bit converter that's listed here at $400. Make sure you get the power supply and DB-15 connector cable with it. You may also need custom cables, since this DAC has BNC in and balanced outs.
The only option for SACD output is a filter of some kind that was sold by the cable company. I have never tried it but it was selling for around $500 and they offer a money back trial period.

Happy Listening
Thanks for your response. Somehow I need information on DA converter. Why should we use them? Does it make better for transporter? In addition, any suggestion on SACD sound. I do not like at all the sound of sacd 555ES on my system since it makes sound bright and no much bass at all. Only the voice of singer is clear and bright. After I hooked up with Proceed CDP 3, the sound is not clear but more bass. If I have DA converter, the sound of Proceed will be bettter, my friend told me that. I do not know that will be my solution. If it is my best solution, I will buy the proceed converter. I also have another choice, I should buy Sony XA7ES. Please advise my choice: DA converter or sony xa7es. Also the SACD sound.