You need to mention what inputs might you use other than computer and also which file types you might use via your computer. There are many DACs available, new or used at or under $500 which might serve you well. Especially if a computer is your only input and you are only going to play PCM files.
AS ZD stated there is more to a DAC than the converter chip. The power supply and analog sections contribute much to the sound.
AS ZD stated there is more to a DAC than the converter chip. The power supply and analog sections contribute much to the sound.